/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:36:53,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:36:53,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:36:53,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:36:53,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:36:53,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:36:53,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:36:53,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:36:53,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:36:53,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:36:53,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:36:53,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:36:53,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:36:53,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:36:53,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:36:53,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:36:53,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:36:53,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:36:53,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:36:53,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:36:53,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:36:53,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:36:53,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:36:53,597 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:36:53,597 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:36:53,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:36:53,597 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:36:53,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:36:53,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:36:53,598 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:36:53,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:36:53,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:36:53,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:36:53,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:36:53,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:36:53,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:36:53,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:36:53,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:36:53,599 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:36:53,599 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:36:53,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:36:53,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:36:53,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:36:53,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:36:53,601 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:36:53,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:36:53,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:36:53,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:36:53,792 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:36:53,792 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:36:53,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c [2024-11-03 13:36:54,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:36:55,080 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:36:55,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-1a.c [2024-11-03 13:36:55,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96b35e69/b48c9299491d47959fa13df135a29d75/FLAG15d553414 [2024-11-03 13:36:55,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96b35e69/b48c9299491d47959fa13df135a29d75 [2024-11-03 13:36:55,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:36:55,510 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:36:55,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:36:55,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:36:55,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:36:55,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646c7f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55, skipping insertion in model container [2024-11-03 13:36:55,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:36:55,704 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_clnt_3.BV.c.cil-1a.c[37883,37896] [2024-11-03 13:36:55,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:36:55,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:36:55,757 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_clnt_3.BV.c.cil-1a.c[37883,37896] [2024-11-03 13:36:55,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:36:55,773 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:36:55,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55 WrapperNode [2024-11-03 13:36:55,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:36:55,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:36:55,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:36:55,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:36:55,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,805 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 474 [2024-11-03 13:36:55,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:36:55,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:36:55,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:36:55,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:36:55,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,826 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 13:36:55,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:36:55,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:36:55,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:36:55,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:36:55,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (1/1) ... [2024-11-03 13:36:55,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:36:55,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:36:55,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 13:36:55,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 13:36:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:36:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:36:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:36:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:36:55,950 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:36:55,951 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:36:55,960 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-03 13:36:56,265 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2024-11-03 13:36:56,265 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2024-11-03 13:36:56,304 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-03 13:36:56,304 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:36:56,316 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:36:56,317 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:36:56,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:56 BoogieIcfgContainer [2024-11-03 13:36:56,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:36:56,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:36:56,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:36:56,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:36:56,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:36:55" (1/3) ... [2024-11-03 13:36:56,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e8c849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:56, skipping insertion in model container [2024-11-03 13:36:56,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:55" (2/3) ... [2024-11-03 13:36:56,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e8c849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:56, skipping insertion in model container [2024-11-03 13:36:56,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:56" (3/3) ... [2024-11-03 13:36:56,325 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2024-11-03 13:36:56,336 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:36:56,337 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:36:56,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:36:56,380 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;@5a76e318, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:36:56,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:36:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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) [2024-11-03 13:36:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-03 13:36:56,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:56,388 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] [2024-11-03 13:36:56,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:56,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2024-11-03 13:36:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743191159] [2024-11-03 13:36:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:56,398 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:56,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:56,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:56,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:36:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:56,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:36:56,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:56,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:56,524 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:56,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743191159] [2024-11-03 13:36:56,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1743191159] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:36:56,525 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:36:56,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:36:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737668492] [2024-11-03 13:36:56,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:36:56,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:36:56,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:36:56,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:56,549 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-03 13:36:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:56,720 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2024-11-03 13:36:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:36:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2024-11-03 13:36:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:56,729 INFO L225 Difference]: With dead ends: 247 [2024-11-03 13:36:56,729 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 13:36:56,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:56,733 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:56,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:36:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 13:36:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-03 13:36:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 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) [2024-11-03 13:36:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2024-11-03 13:36:56,764 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2024-11-03 13:36:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:56,764 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2024-11-03 13:36:56,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-03 13:36:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2024-11-03 13:36:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-03 13:36:56,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:56,765 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:56,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:36:56,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:56,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:56,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:56,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2024-11-03 13:36:56,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:56,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004203921] [2024-11-03 13:36:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:56,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:56,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:56,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:36:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:57,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:36:57,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:57,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:57,050 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004203921] [2024-11-03 13:36:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1004203921] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:36:57,051 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:36:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:36:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27398694] [2024-11-03 13:36:57,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:36:57,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:36:57,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:36:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:57,054 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-03 13:36:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:57,162 INFO L93 Difference]: Finished difference Result 230 states and 352 transitions. [2024-11-03 13:36:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:36:57,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-11-03 13:36:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:57,167 INFO L225 Difference]: With dead ends: 230 [2024-11-03 13:36:57,167 INFO L226 Difference]: Without dead ends: 128 [2024-11-03 13:36:57,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:57,168 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 9 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:57,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 242 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:36:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-03 13:36:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-03 13:36:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 127 states have internal predecessors, (191), 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) [2024-11-03 13:36:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2024-11-03 13:36:57,177 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2024-11-03 13:36:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:57,177 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2024-11-03 13:36:57,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-03 13:36:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2024-11-03 13:36:57,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:36:57,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:57,178 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:57,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:36:57,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:57,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:57,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2024-11-03 13:36:57,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:57,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848297008] [2024-11-03 13:36:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:57,380 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:57,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:57,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:57,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:36:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:57,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:36:57,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:36:57,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:36:57,494 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848297008] [2024-11-03 13:36:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1848297008] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:36:57,494 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:36:57,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:36:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869202111] [2024-11-03 13:36:57,494 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:36:57,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:36:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:36:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:57,499 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-03 13:36:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:57,513 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2024-11-03 13:36:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:36:57,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2024-11-03 13:36:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:57,515 INFO L225 Difference]: With dead ends: 271 [2024-11-03 13:36:57,515 INFO L226 Difference]: Without dead ends: 154 [2024-11-03 13:36:57,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:57,516 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 21 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:57,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 311 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:36:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-03 13:36:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-03 13:36:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 153 states have internal predecessors, (224), 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) [2024-11-03 13:36:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-03 13:36:57,528 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2024-11-03 13:36:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:57,528 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-03 13:36:57,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-03 13:36:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-03 13:36:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:36:57,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:57,531 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:57,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 13:36:57,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:57,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:57,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2024-11-03 13:36:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:57,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891042050] [2024-11-03 13:36:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:57,733 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:57,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:57,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:57,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:36:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:57,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:36:57,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:36:57,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:36:57,811 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891042050] [2024-11-03 13:36:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1891042050] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:36:57,811 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:36:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:36:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839973740] [2024-11-03 13:36:57,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:36:57,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:36:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:36:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:57,813 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-03 13:36:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:57,910 INFO L93 Difference]: Finished difference Result 288 states and 429 transitions. [2024-11-03 13:36:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:36:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 51 [2024-11-03 13:36:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:57,912 INFO L225 Difference]: With dead ends: 288 [2024-11-03 13:36:57,912 INFO L226 Difference]: Without dead ends: 171 [2024-11-03 13:36:57,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:57,913 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:57,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 255 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:36:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-03 13:36:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-03 13:36:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 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) [2024-11-03 13:36:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2024-11-03 13:36:57,924 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2024-11-03 13:36:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:57,924 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2024-11-03 13:36:57,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-03 13:36:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2024-11-03 13:36:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 13:36:57,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:57,926 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:57,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:36:58,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:58,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:58,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:58,127 INFO L85 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2024-11-03 13:36:58,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:58,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560107428] [2024-11-03 13:36:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:58,127 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:58,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:58,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:58,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:36:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:58,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:36:58,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:58,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:58,461 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560107428] [2024-11-03 13:36:58,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560107428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:58,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:58,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:36:58,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750021001] [2024-11-03 13:36:58,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:58,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:36:58,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:58,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:36:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:36:58,463 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-03 13:36:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:58,853 INFO L93 Difference]: Finished difference Result 556 states and 838 transitions. [2024-11-03 13:36:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:36:58,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-03 13:36:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:58,855 INFO L225 Difference]: With dead ends: 556 [2024-11-03 13:36:58,855 INFO L226 Difference]: Without dead ends: 421 [2024-11-03 13:36:58,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:36:58,857 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 280 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:58,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 495 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:36:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-03 13:36:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2024-11-03 13:36:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.4521531100478469) internal successors, (607), 418 states have internal predecessors, (607), 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) [2024-11-03 13:36:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2024-11-03 13:36:58,869 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2024-11-03 13:36:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:58,870 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2024-11-03 13:36:58,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-03 13:36:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2024-11-03 13:36:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 13:36:58,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:58,874 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:58,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:36:59,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:59,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:59,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2024-11-03 13:36:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732143406] [2024-11-03 13:36:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:59,076 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:59,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:59,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:59,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:36:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:59,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:36:59,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:59,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:59,211 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:59,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732143406] [2024-11-03 13:36:59,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [732143406] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:36:59,212 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:36:59,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:36:59,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121462848] [2024-11-03 13:36:59,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:36:59,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:36:59,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:36:59,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:59,213 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:59,230 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2024-11-03 13:36:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:36:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-03 13:36:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:59,232 INFO L225 Difference]: With dead ends: 927 [2024-11-03 13:36:59,232 INFO L226 Difference]: Without dead ends: 574 [2024-11-03 13:36:59,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:59,233 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:59,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 323 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:36:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-03 13:36:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2024-11-03 13:36:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.4623467600700526) internal successors, (835), 571 states have internal predecessors, (835), 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) [2024-11-03 13:36:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2024-11-03 13:36:59,246 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2024-11-03 13:36:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:59,247 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2024-11-03 13:36:59,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2024-11-03 13:36:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 13:36:59,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:59,248 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:59,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-03 13:36:59,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:59,449 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:59,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2024-11-03 13:36:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:59,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328395471] [2024-11-03 13:36:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:59,450 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:59,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:59,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:59,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:36:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:59,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:36:59,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:59,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:59,566 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:59,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328395471] [2024-11-03 13:36:59,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1328395471] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:36:59,567 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:36:59,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:36:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535053616] [2024-11-03 13:36:59,567 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:36:59,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:36:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:36:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:59,568 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:59,581 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2024-11-03 13:36:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:36:59,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-03 13:36:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:59,583 INFO L225 Difference]: With dead ends: 576 [2024-11-03 13:36:59,583 INFO L226 Difference]: Without dead ends: 419 [2024-11-03 13:36:59,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:36:59,584 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 122 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:59,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 399 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:36:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-03 13:36:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2024-11-03 13:36:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.4375) internal successors, (598), 416 states have internal predecessors, (598), 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) [2024-11-03 13:36:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2024-11-03 13:36:59,593 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2024-11-03 13:36:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:59,594 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2024-11-03 13:36:59,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2024-11-03 13:36:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 13:36:59,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:59,594 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:59,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:36:59,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:59,795 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:59,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:59,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2024-11-03 13:36:59,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:59,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803637756] [2024-11-03 13:36:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:59,796 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:59,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:59,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:59,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:36:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:59,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:36:59,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:36:59,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:00,051 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:00,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803637756] [2024-11-03 13:37:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [803637756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:00,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:37:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810527128] [2024-11-03 13:37:00,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:00,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:00,052 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-03 13:37:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:00,466 INFO L93 Difference]: Finished difference Result 877 states and 1308 transitions. [2024-11-03 13:37:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:37:00,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-03 13:37:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:00,468 INFO L225 Difference]: With dead ends: 877 [2024-11-03 13:37:00,468 INFO L226 Difference]: Without dead ends: 520 [2024-11-03 13:37:00,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:00,469 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 307 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:00,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 521 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:37:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-03 13:37:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 495. [2024-11-03 13:37:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.417004048582996) internal successors, (700), 494 states have internal predecessors, (700), 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) [2024-11-03 13:37:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 700 transitions. [2024-11-03 13:37:00,480 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 700 transitions. Word has length 68 [2024-11-03 13:37:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:00,480 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 700 transitions. [2024-11-03 13:37:00,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-03 13:37:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 700 transitions. [2024-11-03 13:37:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-03 13:37:00,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:00,481 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:00,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:37:00,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:00,682 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:00,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:00,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2024-11-03 13:37:00,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:00,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593139876] [2024-11-03 13:37:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:00,683 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:00,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:00,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:37:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:00,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:00,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 13:37:00,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 13:37:00,759 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593139876] [2024-11-03 13:37:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1593139876] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:00,759 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:00,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384853448] [2024-11-03 13:37:00,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:00,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:00,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:00,760 INFO L87 Difference]: Start difference. First operand 495 states and 700 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:00,846 INFO L93 Difference]: Finished difference Result 966 states and 1391 transitions. [2024-11-03 13:37:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-03 13:37:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:00,848 INFO L225 Difference]: With dead ends: 966 [2024-11-03 13:37:00,849 INFO L226 Difference]: Without dead ends: 537 [2024-11-03 13:37:00,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:00,850 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 9 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:00,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 259 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-03 13:37:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-11-03 13:37:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4029850746268657) internal successors, (752), 536 states have internal predecessors, (752), 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) [2024-11-03 13:37:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 752 transitions. [2024-11-03 13:37:00,859 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 752 transitions. Word has length 85 [2024-11-03 13:37:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:00,859 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 752 transitions. [2024-11-03 13:37:00,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 752 transitions. [2024-11-03 13:37:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-03 13:37:00,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:00,860 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:00,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:37:01,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:01,061 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:01,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 517716668, now seen corresponding path program 1 times [2024-11-03 13:37:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82386580] [2024-11-03 13:37:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:01,062 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:01,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:01,063 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:01,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:37:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:01,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:01,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 13:37:01,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-03 13:37:01,145 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82386580] [2024-11-03 13:37:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [82386580] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:01,145 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597918858] [2024-11-03 13:37:01,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:01,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:01,147 INFO L87 Difference]: Start difference. First operand 537 states and 752 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-03 13:37:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:01,316 INFO L93 Difference]: Finished difference Result 1142 states and 1652 transitions. [2024-11-03 13:37:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:01,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 93 [2024-11-03 13:37:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:01,319 INFO L225 Difference]: With dead ends: 1142 [2024-11-03 13:37:01,319 INFO L226 Difference]: Without dead ends: 671 [2024-11-03 13:37:01,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:01,320 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 67 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:01,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 262 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-03 13:37:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 647. [2024-11-03 13:37:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.4086687306501549) internal successors, (910), 646 states have internal predecessors, (910), 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) [2024-11-03 13:37:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 910 transitions. [2024-11-03 13:37:01,330 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 910 transitions. Word has length 93 [2024-11-03 13:37:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:01,331 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 910 transitions. [2024-11-03 13:37:01,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-03 13:37:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 910 transitions. [2024-11-03 13:37:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-03 13:37:01,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:01,332 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:01,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-03 13:37:01,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:01,533 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:01,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2024-11-03 13:37:01,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087704823] [2024-11-03 13:37:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:01,534 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:01,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:01,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:37:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:01,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:01,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-03 13:37:01,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-03 13:37:01,656 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087704823] [2024-11-03 13:37:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2087704823] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:01,656 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:01,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913784739] [2024-11-03 13:37:01,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:01,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:01,657 INFO L87 Difference]: Start difference. First operand 647 states and 910 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-03 13:37:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:01,696 INFO L93 Difference]: Finished difference Result 1855 states and 2619 transitions. [2024-11-03 13:37:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:01,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-03 13:37:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:01,700 INFO L225 Difference]: With dead ends: 1855 [2024-11-03 13:37:01,700 INFO L226 Difference]: Without dead ends: 1274 [2024-11-03 13:37:01,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:01,702 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 259 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:01,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 385 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-03 13:37:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1274. [2024-11-03 13:37:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 1.3982717989002356) internal successors, (1780), 1273 states have internal predecessors, (1780), 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) [2024-11-03 13:37:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1780 transitions. [2024-11-03 13:37:01,724 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1780 transitions. Word has length 104 [2024-11-03 13:37:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:01,724 INFO L471 AbstractCegarLoop]: Abstraction has 1274 states and 1780 transitions. [2024-11-03 13:37:01,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-03 13:37:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1780 transitions. [2024-11-03 13:37:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-03 13:37:01,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:01,725 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:01,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 13:37:01,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:01,927 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:01,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash -808954577, now seen corresponding path program 1 times [2024-11-03 13:37:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388755203] [2024-11-03 13:37:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:01,927 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:01,928 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:01,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:37:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:01,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:01,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-03 13:37:01,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-03 13:37:02,003 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:02,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388755203] [2024-11-03 13:37:02,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [388755203] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:02,003 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:02,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813150991] [2024-11-03 13:37:02,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:02,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:02,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:02,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:02,004 INFO L87 Difference]: Start difference. First operand 1274 states and 1780 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-03 13:37:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:02,028 INFO L93 Difference]: Finished difference Result 2524 states and 3531 transitions. [2024-11-03 13:37:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:02,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-03 13:37:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:02,032 INFO L225 Difference]: With dead ends: 2524 [2024-11-03 13:37:02,032 INFO L226 Difference]: Without dead ends: 1316 [2024-11-03 13:37:02,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:02,033 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 11 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:02,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2024-11-03 13:37:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1316. [2024-11-03 13:37:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 1.3946768060836503) internal successors, (1834), 1315 states have internal predecessors, (1834), 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) [2024-11-03 13:37:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1834 transitions. [2024-11-03 13:37:02,054 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1834 transitions. Word has length 105 [2024-11-03 13:37:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:02,054 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1834 transitions. [2024-11-03 13:37:02,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-03 13:37:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1834 transitions. [2024-11-03 13:37:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-03 13:37:02,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:02,056 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:02,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:02,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:02,256 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:02,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 557006567, now seen corresponding path program 1 times [2024-11-03 13:37:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:02,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061427288] [2024-11-03 13:37:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:02,257 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:02,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:02,259 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:02,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:37:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:02,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:02,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-03 13:37:02,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-03 13:37:02,361 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:02,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061427288] [2024-11-03 13:37:02,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2061427288] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:02,361 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:02,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692801526] [2024-11-03 13:37:02,361 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:02,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:02,362 INFO L87 Difference]: Start difference. First operand 1316 states and 1834 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-03 13:37:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:02,415 INFO L93 Difference]: Finished difference Result 3676 states and 5173 transitions. [2024-11-03 13:37:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 106 [2024-11-03 13:37:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:02,421 INFO L225 Difference]: With dead ends: 3676 [2024-11-03 13:37:02,421 INFO L226 Difference]: Without dead ends: 2426 [2024-11-03 13:37:02,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:02,423 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 260 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:02,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 593 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-03 13:37:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2426. [2024-11-03 13:37:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2425 states have (on average 1.4070103092783506) internal successors, (3412), 2425 states have internal predecessors, (3412), 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) [2024-11-03 13:37:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3412 transitions. [2024-11-03 13:37:02,463 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3412 transitions. Word has length 106 [2024-11-03 13:37:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:02,463 INFO L471 AbstractCegarLoop]: Abstraction has 2426 states and 3412 transitions. [2024-11-03 13:37:02,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-03 13:37:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3412 transitions. [2024-11-03 13:37:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-03 13:37:02,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:02,466 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 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, 1, 1, 1, 1] [2024-11-03 13:37:02,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 13:37:02,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:02,669 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:02,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2116934414, now seen corresponding path program 1 times [2024-11-03 13:37:02,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076844680] [2024-11-03 13:37:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:02,670 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:02,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:02,671 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:02,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 13:37:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:02,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:02,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-03 13:37:02,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-03 13:37:02,750 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:02,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076844680] [2024-11-03 13:37:02,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076844680] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:02,750 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:02,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:02,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732796995] [2024-11-03 13:37:02,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:02,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:02,751 INFO L87 Difference]: Start difference. First operand 2426 states and 3412 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:02,911 INFO L93 Difference]: Finished difference Result 4837 states and 6805 transitions. [2024-11-03 13:37:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:02,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-11-03 13:37:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:02,917 INFO L225 Difference]: With dead ends: 4837 [2024-11-03 13:37:02,918 INFO L226 Difference]: Without dead ends: 2477 [2024-11-03 13:37:02,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:02,920 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 69 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:02,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 208 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2024-11-03 13:37:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2426. [2024-11-03 13:37:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2425 states have (on average 1.3575257731958763) internal successors, (3292), 2425 states have internal predecessors, (3292), 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) [2024-11-03 13:37:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3292 transitions. [2024-11-03 13:37:02,957 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3292 transitions. Word has length 160 [2024-11-03 13:37:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:02,958 INFO L471 AbstractCegarLoop]: Abstraction has 2426 states and 3292 transitions. [2024-11-03 13:37:02,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3292 transitions. [2024-11-03 13:37:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-03 13:37:02,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:02,960 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:02,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-03 13:37:03,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:03,162 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:03,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 81799059, now seen corresponding path program 1 times [2024-11-03 13:37:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:03,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789836364] [2024-11-03 13:37:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:03,163 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:03,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:03,164 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:03,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 13:37:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:03,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:03,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-03 13:37:03,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-03 13:37:03,250 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789836364] [2024-11-03 13:37:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1789836364] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:03,250 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975441211] [2024-11-03 13:37:03,251 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:03,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:03,252 INFO L87 Difference]: Start difference. First operand 2426 states and 3292 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-03 13:37:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:03,400 INFO L93 Difference]: Finished difference Result 4990 states and 6826 transitions. [2024-11-03 13:37:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 182 [2024-11-03 13:37:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:03,407 INFO L225 Difference]: With dead ends: 4990 [2024-11-03 13:37:03,407 INFO L226 Difference]: Without dead ends: 2630 [2024-11-03 13:37:03,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:03,411 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 72 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:03,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 208 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2024-11-03 13:37:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2576. [2024-11-03 13:37:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 2575 states have (on average 1.345242718446602) internal successors, (3464), 2575 states have internal predecessors, (3464), 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) [2024-11-03 13:37:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3464 transitions. [2024-11-03 13:37:03,489 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3464 transitions. Word has length 182 [2024-11-03 13:37:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:03,489 INFO L471 AbstractCegarLoop]: Abstraction has 2576 states and 3464 transitions. [2024-11-03 13:37:03,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-03 13:37:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3464 transitions. [2024-11-03 13:37:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-03 13:37:03,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:03,494 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:03,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-03 13:37:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:03,695 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:03,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -634839642, now seen corresponding path program 1 times [2024-11-03 13:37:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073822953] [2024-11-03 13:37:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:03,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:03,697 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:03,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 13:37:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:03,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:03,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-03 13:37:03,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-03 13:37:03,840 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:03,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073822953] [2024-11-03 13:37:03,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2073822953] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:03,840 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:03,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131108697] [2024-11-03 13:37:03,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:03,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:03,841 INFO L87 Difference]: Start difference. First operand 2576 states and 3464 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2024-11-03 13:37:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:03,908 INFO L93 Difference]: Finished difference Result 10082 states and 13577 transitions. [2024-11-03 13:37:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:03,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 249 [2024-11-03 13:37:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:03,925 INFO L225 Difference]: With dead ends: 10082 [2024-11-03 13:37:03,926 INFO L226 Difference]: Without dead ends: 7572 [2024-11-03 13:37:03,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:03,929 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 252 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:03,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 774 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7572 states. [2024-11-03 13:37:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7572 to 7568. [2024-11-03 13:37:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7568 states, 7567 states have (on average 1.3442579622043083) internal successors, (10172), 7567 states have internal predecessors, (10172), 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) [2024-11-03 13:37:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7568 states to 7568 states and 10172 transitions. [2024-11-03 13:37:04,069 INFO L78 Accepts]: Start accepts. Automaton has 7568 states and 10172 transitions. Word has length 249 [2024-11-03 13:37:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:04,069 INFO L471 AbstractCegarLoop]: Abstraction has 7568 states and 10172 transitions. [2024-11-03 13:37:04,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2024-11-03 13:37:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7568 states and 10172 transitions. [2024-11-03 13:37:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-03 13:37:04,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:04,079 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:04,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:04,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:04,279 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:04,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1719545640, now seen corresponding path program 1 times [2024-11-03 13:37:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35707602] [2024-11-03 13:37:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:04,280 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:04,282 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:04,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 13:37:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:04,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:04,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-03 13:37:04,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-03 13:37:04,377 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35707602] [2024-11-03 13:37:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [35707602] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:04,378 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:04,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:04,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218445863] [2024-11-03 13:37:04,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:04,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:04,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:04,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:04,379 INFO L87 Difference]: Start difference. First operand 7568 states and 10172 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:04,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:04,591 INFO L93 Difference]: Finished difference Result 16045 states and 21927 transitions. [2024-11-03 13:37:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:04,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-03 13:37:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:04,615 INFO L225 Difference]: With dead ends: 16045 [2024-11-03 13:37:04,615 INFO L226 Difference]: Without dead ends: 8543 [2024-11-03 13:37:04,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:04,627 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 90 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:04,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 224 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8543 states. [2024-11-03 13:37:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8543 to 8408. [2024-11-03 13:37:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8408 states, 8407 states have (on average 1.3212798858094446) internal successors, (11108), 8407 states have internal predecessors, (11108), 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) [2024-11-03 13:37:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8408 states to 8408 states and 11108 transitions. [2024-11-03 13:37:04,780 INFO L78 Accepts]: Start accepts. Automaton has 8408 states and 11108 transitions. Word has length 249 [2024-11-03 13:37:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:04,780 INFO L471 AbstractCegarLoop]: Abstraction has 8408 states and 11108 transitions. [2024-11-03 13:37:04,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8408 states and 11108 transitions. [2024-11-03 13:37:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-03 13:37:04,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:04,786 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:04,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Ended with exit code 0 [2024-11-03 13:37:04,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:04,986 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:04,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 393840060, now seen corresponding path program 1 times [2024-11-03 13:37:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842914572] [2024-11-03 13:37:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:04,987 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:04,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:04,989 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:04,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 13:37:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:05,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:05,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-03 13:37:05,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-03 13:37:05,112 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:05,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842914572] [2024-11-03 13:37:05,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [842914572] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:05,113 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:05,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757814437] [2024-11-03 13:37:05,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:05,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:05,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:05,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:05,114 INFO L87 Difference]: Start difference. First operand 8408 states and 11108 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2024-11-03 13:37:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:05,339 INFO L93 Difference]: Finished difference Result 17182 states and 22691 transitions. [2024-11-03 13:37:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:05,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 256 [2024-11-03 13:37:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:05,351 INFO L225 Difference]: With dead ends: 17182 [2024-11-03 13:37:05,351 INFO L226 Difference]: Without dead ends: 8840 [2024-11-03 13:37:05,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:05,358 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 9 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:05,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 260 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2024-11-03 13:37:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 8840. [2024-11-03 13:37:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8840 states, 8839 states have (on average 1.314628351623487) internal successors, (11620), 8839 states have internal predecessors, (11620), 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) [2024-11-03 13:37:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8840 states to 8840 states and 11620 transitions. [2024-11-03 13:37:05,514 INFO L78 Accepts]: Start accepts. Automaton has 8840 states and 11620 transitions. Word has length 256 [2024-11-03 13:37:05,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:05,514 INFO L471 AbstractCegarLoop]: Abstraction has 8840 states and 11620 transitions. [2024-11-03 13:37:05,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2024-11-03 13:37:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8840 states and 11620 transitions. [2024-11-03 13:37:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-03 13:37:05,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:05,521 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:05,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-03 13:37:05,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:05,722 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:05,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1906717789, now seen corresponding path program 1 times [2024-11-03 13:37:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675658181] [2024-11-03 13:37:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:05,723 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:05,724 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:05,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-03 13:37:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:05,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:05,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:37:05,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:37:05,816 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:05,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675658181] [2024-11-03 13:37:05,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [675658181] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:05,816 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:05,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:05,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069859567] [2024-11-03 13:37:05,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:05,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:05,818 INFO L87 Difference]: Start difference. First operand 8840 states and 11620 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:06,051 INFO L93 Difference]: Finished difference Result 18022 states and 23800 transitions. [2024-11-03 13:37:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:06,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2024-11-03 13:37:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:06,063 INFO L225 Difference]: With dead ends: 18022 [2024-11-03 13:37:06,064 INFO L226 Difference]: Without dead ends: 9248 [2024-11-03 13:37:06,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:06,070 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 84 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:06,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 251 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9248 states. [2024-11-03 13:37:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9248 to 9104. [2024-11-03 13:37:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9104 states, 9103 states have (on average 1.3072613424145887) internal successors, (11900), 9103 states have internal predecessors, (11900), 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) [2024-11-03 13:37:06,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9104 states to 9104 states and 11900 transitions. [2024-11-03 13:37:06,219 INFO L78 Accepts]: Start accepts. Automaton has 9104 states and 11900 transitions. Word has length 274 [2024-11-03 13:37:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:06,219 INFO L471 AbstractCegarLoop]: Abstraction has 9104 states and 11900 transitions. [2024-11-03 13:37:06,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9104 states and 11900 transitions. [2024-11-03 13:37:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-03 13:37:06,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:06,229 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 14, 14, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:06,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Ended with exit code 0 [2024-11-03 13:37:06,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:06,429 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:06,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -584522308, now seen corresponding path program 1 times [2024-11-03 13:37:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906652861] [2024-11-03 13:37:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:06,430 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:06,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:06,431 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:06,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-03 13:37:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:06,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:06,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-11-03 13:37:06,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-11-03 13:37:06,522 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906652861] [2024-11-03 13:37:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1906652861] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:06,522 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:06,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:06,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243753167] [2024-11-03 13:37:06,523 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:06,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:06,523 INFO L87 Difference]: Start difference. First operand 9104 states and 11900 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:06,810 INFO L93 Difference]: Finished difference Result 19228 states and 25566 transitions. [2024-11-03 13:37:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:06,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2024-11-03 13:37:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:06,825 INFO L225 Difference]: With dead ends: 19228 [2024-11-03 13:37:06,825 INFO L226 Difference]: Without dead ends: 10190 [2024-11-03 13:37:06,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:06,834 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 95 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:06,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 205 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10190 states. [2024-11-03 13:37:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10190 to 10076. [2024-11-03 13:37:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10076 states, 10075 states have (on average 1.2871464019851118) internal successors, (12968), 10075 states have internal predecessors, (12968), 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) [2024-11-03 13:37:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10076 states to 10076 states and 12968 transitions. [2024-11-03 13:37:07,043 INFO L78 Accepts]: Start accepts. Automaton has 10076 states and 12968 transitions. Word has length 332 [2024-11-03 13:37:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:07,043 INFO L471 AbstractCegarLoop]: Abstraction has 10076 states and 12968 transitions. [2024-11-03 13:37:07,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 10076 states and 12968 transitions. [2024-11-03 13:37:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-03 13:37:07,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:07,053 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:07,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:07,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:07,254 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:07,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:07,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2037361951, now seen corresponding path program 1 times [2024-11-03 13:37:07,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:07,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199571960] [2024-11-03 13:37:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:07,255 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:07,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:07,256 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:07,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Waiting until timeout for monitored process [2024-11-03 13:37:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:07,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:07,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 790 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-03 13:37:07,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 790 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-03 13:37:07,428 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199571960] [2024-11-03 13:37:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [199571960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:07,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:07,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:37:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58481149] [2024-11-03 13:37:07,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:07,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:07,429 INFO L87 Difference]: Start difference. First operand 10076 states and 12968 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2024-11-03 13:37:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:07,948 INFO L93 Difference]: Finished difference Result 24832 states and 31696 transitions. [2024-11-03 13:37:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:37:07,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 344 [2024-11-03 13:37:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:07,965 INFO L225 Difference]: With dead ends: 24832 [2024-11-03 13:37:07,965 INFO L226 Difference]: Without dead ends: 14822 [2024-11-03 13:37:07,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:07,973 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 328 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:07,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 854 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:37:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14822 states. [2024-11-03 13:37:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14822 to 10244. [2024-11-03 13:37:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10244 states, 10243 states have (on average 1.2636922776530313) internal successors, (12944), 10243 states have internal predecessors, (12944), 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) [2024-11-03 13:37:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10244 states to 10244 states and 12944 transitions. [2024-11-03 13:37:08,161 INFO L78 Accepts]: Start accepts. Automaton has 10244 states and 12944 transitions. Word has length 344 [2024-11-03 13:37:08,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:08,161 INFO L471 AbstractCegarLoop]: Abstraction has 10244 states and 12944 transitions. [2024-11-03 13:37:08,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2024-11-03 13:37:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10244 states and 12944 transitions. [2024-11-03 13:37:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-03 13:37:08,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:08,174 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 16, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:08,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Ended with exit code 0 [2024-11-03 13:37:08,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:08,374 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:08,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1440011350, now seen corresponding path program 1 times [2024-11-03 13:37:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420756606] [2024-11-03 13:37:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:08,375 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:08,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:08,377 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:08,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Waiting until timeout for monitored process [2024-11-03 13:37:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:08,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:08,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 867 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2024-11-03 13:37:08,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 867 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2024-11-03 13:37:08,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420756606] [2024-11-03 13:37:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [420756606] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:08,482 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:08,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:08,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948336184] [2024-11-03 13:37:08,482 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:08,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:08,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:08,483 INFO L87 Difference]: Start difference. First operand 10244 states and 12944 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 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) [2024-11-03 13:37:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:08,751 INFO L93 Difference]: Finished difference Result 18999 states and 24145 transitions. [2024-11-03 13:37:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 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 408 [2024-11-03 13:37:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:08,760 INFO L225 Difference]: With dead ends: 18999 [2024-11-03 13:37:08,760 INFO L226 Difference]: Without dead ends: 4935 [2024-11-03 13:37:08,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:08,768 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 103 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:08,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 253 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:08,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2024-11-03 13:37:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4935. [2024-11-03 13:37:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4935 states, 4934 states have (on average 1.2636805837049048) internal successors, (6235), 4934 states have internal predecessors, (6235), 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) [2024-11-03 13:37:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4935 states to 4935 states and 6235 transitions. [2024-11-03 13:37:08,892 INFO L78 Accepts]: Start accepts. Automaton has 4935 states and 6235 transitions. Word has length 408 [2024-11-03 13:37:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:08,892 INFO L471 AbstractCegarLoop]: Abstraction has 4935 states and 6235 transitions. [2024-11-03 13:37:08,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 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) [2024-11-03 13:37:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4935 states and 6235 transitions. [2024-11-03 13:37:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-03 13:37:08,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:08,903 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 16, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:08,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (23)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:09,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:09,104 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:09,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1768856022, now seen corresponding path program 1 times [2024-11-03 13:37:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167910576] [2024-11-03 13:37:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:09,105 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:09,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:09,106 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:09,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (24)] Waiting until timeout for monitored process [2024-11-03 13:37:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:09,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:09,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 1170 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2024-11-03 13:37:09,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 1170 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2024-11-03 13:37:09,257 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:09,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167910576] [2024-11-03 13:37:09,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [167910576] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:09,257 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807660818] [2024-11-03 13:37:09,258 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:09,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:09,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:09,259 INFO L87 Difference]: Start difference. First operand 4935 states and 6235 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-11-03 13:37:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:09,458 INFO L93 Difference]: Finished difference Result 9821 states and 12410 transitions. [2024-11-03 13:37:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:09,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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 492 [2024-11-03 13:37:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:09,466 INFO L225 Difference]: With dead ends: 9821 [2024-11-03 13:37:09,466 INFO L226 Difference]: Without dead ends: 4923 [2024-11-03 13:37:09,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 980 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:09,469 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 78 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:09,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 204 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2024-11-03 13:37:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4923. [2024-11-03 13:37:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 4922 states have (on average 1.2472572125152377) internal successors, (6139), 4922 states have internal predecessors, (6139), 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) [2024-11-03 13:37:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 6139 transitions. [2024-11-03 13:37:09,551 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 6139 transitions. Word has length 492 [2024-11-03 13:37:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:09,551 INFO L471 AbstractCegarLoop]: Abstraction has 4923 states and 6139 transitions. [2024-11-03 13:37:09,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-11-03 13:37:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 6139 transitions. [2024-11-03 13:37:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-03 13:37:09,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:09,559 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 18, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 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, 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] [2024-11-03 13:37:09,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (24)] Ended with exit code 0 [2024-11-03 13:37:09,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:09,761 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:09,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash 630701952, now seen corresponding path program 1 times [2024-11-03 13:37:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:09,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566002679] [2024-11-03 13:37:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:09,762 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:09,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:09,763 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:09,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (25)] Waiting until timeout for monitored process [2024-11-03 13:37:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:09,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:09,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3942 backedges. 2057 proven. 14 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2024-11-03 13:37:09,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3942 backedges. 2057 proven. 14 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2024-11-03 13:37:09,966 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566002679] [2024-11-03 13:37:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [566002679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:09,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:37:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543495350] [2024-11-03 13:37:09,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:09,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:09,968 INFO L87 Difference]: Start difference. First operand 4923 states and 6139 transitions. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-03 13:37:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:10,122 INFO L93 Difference]: Finished difference Result 5158 states and 6438 transitions. [2024-11-03 13:37:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:37:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 606 [2024-11-03 13:37:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:10,123 INFO L225 Difference]: With dead ends: 5158 [2024-11-03 13:37:10,123 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 13:37:10,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:10,125 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 94 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:10,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 279 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 13:37:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 13:37:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 13:37:10,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 606 [2024-11-03 13:37:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:10,127 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 13:37:10,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-03 13:37:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 13:37:10,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 13:37:10,129 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 13:37:10,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (25)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:10,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:10,333 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:10,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 13:37:15,381 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 477 DAG size of output: 525 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-03 13:37:18,522 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 13:37:18,537 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 13:37:18,540 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-03 13:37:18,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:37:18 BoogieIcfgContainer [2024-11-03 13:37:18,544 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 13:37:18,544 INFO L158 Benchmark]: Toolchain (without parser) took 23034.12ms. Allocated memory was 186.6MB in the beginning and 1.0GB in the end (delta: 833.6MB). Free memory was 153.4MB in the beginning and 669.8MB in the end (delta: -516.4MB). Peak memory consumption was 716.1MB. Max. memory is 8.0GB. [2024-11-03 13:37:18,544 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 13:37:18,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.53ms. Allocated memory is still 186.6MB. Free memory was 153.4MB in the beginning and 135.5MB in the end (delta: 17.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-11-03 13:37:18,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.34ms. Allocated memory is still 186.6MB. Free memory was 135.5MB in the beginning and 133.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:37:18,545 INFO L158 Benchmark]: Boogie Preprocessor took 38.42ms. Allocated memory is still 186.6MB. Free memory was 133.0MB in the beginning and 129.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 13:37:18,545 INFO L158 Benchmark]: RCFGBuilder took 472.86ms. Allocated memory is still 186.6MB. Free memory was 129.9MB in the beginning and 93.1MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2024-11-03 13:37:18,546 INFO L158 Benchmark]: TraceAbstraction took 22223.39ms. Allocated memory was 186.6MB in the beginning and 1.0GB in the end (delta: 833.6MB). Free memory was 92.1MB in the beginning and 669.8MB in the end (delta: -577.7MB). Peak memory consumption was 655.3MB. Max. memory is 8.0GB. [2024-11-03 13:37:18,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.53ms. Allocated memory is still 186.6MB. Free memory was 153.4MB in the beginning and 135.5MB in the end (delta: 17.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.34ms. Allocated memory is still 186.6MB. Free memory was 135.5MB in the beginning and 133.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.42ms. Allocated memory is still 186.6MB. Free memory was 133.0MB in the beginning and 129.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 472.86ms. Allocated memory is still 186.6MB. Free memory was 129.9MB in the beginning and 93.1MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 22223.39ms. Allocated memory was 186.6MB in the beginning and 1.0GB in the end (delta: 833.6MB). Free memory was 92.1MB in the beginning and 669.8MB in the end (delta: -577.7MB). Peak memory consumption was 655.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 624]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.0s, OverallIterations: 24, TraceHistogramMax: 21, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2760 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2760 mSDsluCounter, 8426 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4237 mSDsCounter, 580 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4012 IncrementalHoareTripleChecker+Invalid, 4592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 580 mSolverCounterUnsat, 4189 mSDtfsCounter, 4012 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8928 GetRequests, 8872 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10244occurred in iteration=21, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 5135 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 4481 NumberOfCodeBlocks, 4481 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 8914 ConstructedInterpolants, 118 QuantifiedInterpolants, 12167 SizeOfPredicates, 6 NumberOfNonLiveVariables, 5490 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 48 InterpolantComputations, 40 PerfectInterpolantSequences, 33642/33794 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((48 == ag_Z) && (4384 == s__state)) && (1 == blastFlag)) && (0 == s__hit)) || (((((48 == ag_Z) && (5 != blastFlag)) && (0 == s__hit)) && (4480 == s__state)) && (3 != blastFlag))) || (((208 == ag_Y) && (2 == blastFlag)) && (0 != s__hit))) || ((((48 == ag_Z) && (4368 == s__state)) && (0 == s__hit)) && (0 == blastFlag))) || ((((208 == ag_Y) && (4512 == s__state)) && (2 == blastFlag)) && (0 != s__hit))) || ((((((48 == ag_Z) && (5 != blastFlag)) && (4560 == s__state)) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && (3 != blastFlag))) || ((((48 == ag_Z) && (0 == s__hit)) && (0 == blastFlag)) && (12292 == s__state))) || (((((208 == ag_Y) && (4384 != s__s3__tmp__next_state___0)) && (0 != s__hit)) && (3 == s__state)) && (3 != blastFlag))) || ((((((48 == ag_Z) && (5 != blastFlag)) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && (4352 == s__state)) && (3 != blastFlag))) || (((((4432 == s__state) && (48 == ag_Z)) && (5 != blastFlag)) && (0 == s__hit)) && (3 != blastFlag))) || ((((((48 == ag_Z) && (5 != blastFlag)) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && (3 == s__state)) && (3 != blastFlag))) || (((((48 == ag_Z) && (5 != blastFlag)) && (0 == s__hit)) && (4496 == s__state)) && (3 != blastFlag))) || ((((48 == ag_Z) && (5 != blastFlag)) && (0 == s__hit)) && (4416 == s__state))) || ((((4368 == s__state) && (208 == ag_Y)) && (0 == blastFlag)) && (0 != s__hit))) || ((((4384 == s__state) && (1 == blastFlag)) && (208 == ag_Y)) && (0 != s__hit))) || ((((208 == ag_Y) && (0 == blastFlag)) && (0 != s__hit)) && (12292 == s__state))) || (((((4448 == s__state) && (48 == ag_Z)) && (5 != blastFlag)) && (0 == s__hit)) && (3 != blastFlag))) || ((((208 == ag_Y) && (4528 == s__state)) && (2 == blastFlag)) && (0 != s__hit))) || (((((48 == ag_Z) && (5 != blastFlag)) && (4512 == s__state)) && (0 == s__hit)) && (3 != blastFlag))) || (((((208 == ag_Y) && (2 == blastFlag)) && (0 != s__hit)) && (4352 == s__state)) && (3 == s__s3__tmp__next_state___0))) || ((((48 == ag_Z) && (5 != blastFlag)) && (0 == s__hit)) && (3 != blastFlag))) RESULT: Ultimate proved your program to be correct! [2024-11-03 13:37:18,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...