/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/hardness-nfm22/hardness_operatoramount_amount25_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:09:19,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:09:19,466 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 13:09:19,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:09:19,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:09:19,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:09:19,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:09:19,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:09:19,503 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:09:19,504 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:09:19,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:09:19,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:09:19,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:09:19,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:09:19,508 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:09:19,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:09:19,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:09:19,509 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:09:19,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:09:19,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:09:19,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:09:19,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:09:19,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:09:19,514 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:09:19,514 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:09:19,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:09:19,514 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:09:19,515 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:09:19,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:09:19,515 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:09:19,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:09:19,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:09:19,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:09:19,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:09:19,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:09:19,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:09:19,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:09:19,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:09:19,517 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:09:19,518 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:09:19,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:09:19,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:09:19,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:09:19,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:09:19,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:09:19,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:09:19,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:09:19,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:09:19,763 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:09:19,764 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:09:19,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i [2024-11-03 13:09:21,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:09:21,374 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:09:21,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i [2024-11-03 13:09:21,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f320db12e/96abf45bd539484d82cef6aa6aa1ac36/FLAG1b1877687 [2024-11-03 13:09:21,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f320db12e/96abf45bd539484d82cef6aa6aa1ac36 [2024-11-03 13:09:21,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:09:21,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:09:21,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:09:21,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:09:21,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:09:21,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445fc325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21, skipping insertion in model container [2024-11-03 13:09:21,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:09:21,588 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i[915,928] [2024-11-03 13:09:21,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:09:21,639 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:09:21,652 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i[915,928] [2024-11-03 13:09:21,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:09:21,693 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:09:21,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21 WrapperNode [2024-11-03 13:09:21,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:09:21,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:09:21,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:09:21,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:09:21,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,734 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2024-11-03 13:09:21,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:09:21,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:09:21,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:09:21,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:09:21,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,766 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 13:09:21,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:09:21,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:09:21,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:09:21,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:09:21,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (1/1) ... [2024-11-03 13:09:21,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:09:21,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:09:21,811 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 13:09:21,813 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 13:09:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:09:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:09:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:09:21,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:09:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:09:21,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:09:21,899 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:09:21,902 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:09:22,152 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-03 13:09:22,153 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:09:22,165 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:09:22,165 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:09:22,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:09:22 BoogieIcfgContainer [2024-11-03 13:09:22,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:09:22,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:09:22,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:09:22,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:09:22,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:09:21" (1/3) ... [2024-11-03 13:09:22,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa2e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:09:22, skipping insertion in model container [2024-11-03 13:09:22,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:09:21" (2/3) ... [2024-11-03 13:09:22,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa2e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:09:22, skipping insertion in model container [2024-11-03 13:09:22,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:09:22" (3/3) ... [2024-11-03 13:09:22,174 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-90.i [2024-11-03 13:09:22,189 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:09:22,189 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:09:22,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:09:22,251 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;@605bed9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:09:22,251 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:09:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-03 13:09:22,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 13:09:22,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:09:22,267 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:22,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:09:22,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:09:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1387335848, now seen corresponding path program 1 times [2024-11-03 13:09:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:09:22,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277105270] [2024-11-03 13:09:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:09:22,285 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:09:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:09:22,287 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 13:09:22,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:09:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:09:22,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:09:22,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:09:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-03 13:09:22,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:09:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-03 13:09:22,608 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:09:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277105270] [2024-11-03 13:09:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277105270] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:09:22,610 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:09:22,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:09:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984639196] [2024-11-03 13:09:22,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:09:22,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:09:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:09:22,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:09:22,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:09:22,647 INFO L87 Difference]: Start difference. First operand has 51 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 13:09:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:09:22,675 INFO L93 Difference]: Finished difference Result 95 states and 161 transitions. [2024-11-03 13:09:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:09:22,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2024-11-03 13:09:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:09:22,682 INFO L225 Difference]: With dead ends: 95 [2024-11-03 13:09:22,682 INFO L226 Difference]: Without dead ends: 47 [2024-11-03 13:09:22,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:09:22,688 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:09:22,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:09:22,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-03 13:09:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-03 13:09:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-03 13:09:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2024-11-03 13:09:22,729 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 107 [2024-11-03 13:09:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:09:22,730 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2024-11-03 13:09:22,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 13:09:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2024-11-03 13:09:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 13:09:22,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:09:22,738 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:22,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:09:22,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:09:22,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:09:22,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:09:22,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2101967718, now seen corresponding path program 1 times [2024-11-03 13:09:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:09:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248684896] [2024-11-03 13:09:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:09:22,943 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:09:22,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:09:22,945 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 13:09:22,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:09:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:09:23,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 13:09:23,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:09:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:09:26,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:09:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:09:35,001 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:09:35,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248684896] [2024-11-03 13:09:35,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [248684896] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:09:35,002 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:09:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [] total 24 [2024-11-03 13:09:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493085135] [2024-11-03 13:09:35,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:09:35,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 13:09:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:09:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 13:09:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-03 13:09:35,006 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 13:09:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:09:43,589 INFO L93 Difference]: Finished difference Result 217 states and 296 transitions. [2024-11-03 13:09:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-03 13:09:43,590 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 107 [2024-11-03 13:09:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:09:43,594 INFO L225 Difference]: With dead ends: 217 [2024-11-03 13:09:43,594 INFO L226 Difference]: Without dead ends: 215 [2024-11-03 13:09:43,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=734, Invalid=2688, Unknown=0, NotChecked=0, Total=3422 [2024-11-03 13:09:43,596 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 496 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:09:43,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 580 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-03 13:09:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-03 13:09:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 159. [2024-11-03 13:09:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 95 states have internal predecessors, (110), 58 states have call successors, (58), 7 states have call predecessors, (58), 7 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-03 13:09:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 226 transitions. [2024-11-03 13:09:43,636 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 226 transitions. Word has length 107 [2024-11-03 13:09:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:09:43,637 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 226 transitions. [2024-11-03 13:09:43,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 13:09:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 226 transitions. [2024-11-03 13:09:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 13:09:43,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:09:43,639 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:43,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:09:43,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:09:43,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:09:43,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:09:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash 331001653, now seen corresponding path program 1 times [2024-11-03 13:09:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:09:43,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760365109] [2024-11-03 13:09:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:09:43,844 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:09:43,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:09:43,846 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 13:09:43,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:09:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:09:43,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 13:09:43,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:09:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:09:46,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:09:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:09:54,303 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:09:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760365109] [2024-11-03 13:09:54,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1760365109] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:09:54,303 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:09:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 26 [2024-11-03 13:09:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369233351] [2024-11-03 13:09:54,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:09:54,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 13:09:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:09:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 13:09:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-03 13:09:54,307 INFO L87 Difference]: Start difference. First operand 159 states and 226 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 13:10:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:10:03,284 INFO L93 Difference]: Finished difference Result 289 states and 387 transitions. [2024-11-03 13:10:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-03 13:10:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 108 [2024-11-03 13:10:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:10:03,290 INFO L225 Difference]: With dead ends: 289 [2024-11-03 13:10:03,290 INFO L226 Difference]: Without dead ends: 287 [2024-11-03 13:10:03,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=856, Invalid=3304, Unknown=0, NotChecked=0, Total=4160 [2024-11-03 13:10:03,293 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 528 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:10:03,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 591 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-03 13:10:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-03 13:10:03,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 125. [2024-11-03 13:10:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 13:10:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2024-11-03 13:10:03,330 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 108 [2024-11-03 13:10:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:10:03,330 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2024-11-03 13:10:03,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 13:10:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2024-11-03 13:10:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-03 13:10:03,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:10:03,332 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:03,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:10:03,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:10:03,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:10:03,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:10:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1432785787, now seen corresponding path program 1 times [2024-11-03 13:10:03,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:10:03,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712755887] [2024-11-03 13:10:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:10:03,535 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:10:03,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:10:03,537 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 13:10:03,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:10:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:10:03,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 13:10:03,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:10:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:10:06,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:10:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:10:12,284 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:10:12,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712755887] [2024-11-03 13:10:12,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1712755887] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:10:12,284 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:10:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 26 [2024-11-03 13:10:12,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235977419] [2024-11-03 13:10:12,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:10:12,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 13:10:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:10:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 13:10:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-03 13:10:12,287 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 13:10:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:10:23,427 INFO L93 Difference]: Finished difference Result 197 states and 252 transitions. [2024-11-03 13:10:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-03 13:10:23,428 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 109 [2024-11-03 13:10:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:10:23,430 INFO L225 Difference]: With dead ends: 197 [2024-11-03 13:10:23,430 INFO L226 Difference]: Without dead ends: 195 [2024-11-03 13:10:23,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=864, Invalid=3426, Unknown=0, NotChecked=0, Total=4290 [2024-11-03 13:10:23,433 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 394 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:10:23,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 679 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-03 13:10:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-03 13:10:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 95. [2024-11-03 13:10:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 33 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-03 13:10:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2024-11-03 13:10:23,461 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 109 [2024-11-03 13:10:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:10:23,462 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2024-11-03 13:10:23,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 13:10:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2024-11-03 13:10:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-03 13:10:23,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:10:23,464 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:23,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:10:23,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:10:23,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:10:23,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:10:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1434632829, now seen corresponding path program 1 times [2024-11-03 13:10:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:10:23,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313277284] [2024-11-03 13:10:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:10:23,670 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:10:23,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:10:23,671 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 13:10:23,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:10:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:10:23,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-03 13:10:23,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:10:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:10:26,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:10:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 13:10:43,841 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:10:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313277284] [2024-11-03 13:10:43,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1313277284] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:10:43,842 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:10:43,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 26 [2024-11-03 13:10:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881494754] [2024-11-03 13:10:43,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:10:43,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 13:10:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:10:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 13:10:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2024-11-03 13:10:43,844 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 24 states have internal predecessors, (59), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34)