/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-16.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:54:10,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:54:10,617 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 00:54:10,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:54:10,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:54:10,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:54:10,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:54:10,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:54:10,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:54:10,654 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:54:10,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:54:10,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:54:10,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:54:10,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:54:10,656 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:54:10,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:54:10,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:54:10,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:54:10,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:54:10,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:54:10,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:54:10,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:54:10,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:54:10,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:54:10,662 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:54:10,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:54:10,662 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:54:10,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:54:10,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:54:10,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:54:10,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:54:10,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:54:10,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:54:10,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:54:10,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:54:10,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:54:10,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:54:10,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:54:10,667 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:54:10,667 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:10,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:54:10,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:54:10,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:54:10,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:54:10,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:10,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:54:10,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:54:10,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:54:10,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:54:10,917 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:54:10,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-16.i [2024-11-03 00:54:12,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:54:12,498 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:54:12,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-16.i [2024-11-03 00:54:12,514 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd592b66/20e3b124b92e4588b997b044c765bc9f/FLAGbca44c7e5 [2024-11-03 00:54:12,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd592b66/20e3b124b92e4588b997b044c765bc9f [2024-11-03 00:54:12,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:54:12,880 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:54:12,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:54:12,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:54:12,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:54:12,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:54:12" (1/1) ... [2024-11-03 00:54:12,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8fd81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:12, skipping insertion in model container [2024-11-03 00:54:12,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:54:12" (1/1) ... [2024-11-03 00:54:12,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:54:13,078 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_amount100_file-16.i[916,929] [2024-11-03 00:54:13,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:54:13,172 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:54:13,183 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_amount100_file-16.i[916,929] [2024-11-03 00:54:13,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:54:13,252 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:54:13,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13 WrapperNode [2024-11-03 00:54:13,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:54:13,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:54:13,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:54:13,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:54:13,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,302 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 177 [2024-11-03 00:54:13,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:54:13,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:54:13,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:54:13,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:54:13,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,317 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,331 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 00:54:13,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:54:13,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:54:13,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:54:13,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:54:13,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (1/1) ... [2024-11-03 00:54:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:54:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:54:13,389 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 00:54:13,392 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 00:54:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:54:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:54:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 00:54:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 00:54:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:54:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:54:13,521 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:54:13,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:54:23,421 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-03 00:54:23,422 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:54:23,438 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:54:23,438 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 00:54:23,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:54:23 BoogieIcfgContainer [2024-11-03 00:54:23,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:54:23,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:54:23,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:54:23,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:54:23,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:54:12" (1/3) ... [2024-11-03 00:54:23,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c82d1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:54:23, skipping insertion in model container [2024-11-03 00:54:23,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:13" (2/3) ... [2024-11-03 00:54:23,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c82d1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:54:23, skipping insertion in model container [2024-11-03 00:54:23,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:54:23" (3/3) ... [2024-11-03 00:54:23,447 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-16.i [2024-11-03 00:54:23,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:54:23,460 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:54:23,513 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:54:23,518 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;@54629906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:54:23,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:54:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 53 states have internal predecessors, (75), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-03 00:54:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-03 00:54:23,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:23,533 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:23,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash -871836568, now seen corresponding path program 1 times [2024-11-03 00:54:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589046402] [2024-11-03 00:54:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:23,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:54:23,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 00:54:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:23,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 00:54:23,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-03 00:54:23,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-03 00:54:24,288 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589046402] [2024-11-03 00:54:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1589046402] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:54:24,290 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:54:24,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 00:54:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942317408] [2024-11-03 00:54:24,293 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:54:24,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 00:54:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 00:54:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:54:24,328 INFO L87 Difference]: Start difference. First operand has 76 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 53 states have internal predecessors, (75), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 00:54:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:24,353 INFO L93 Difference]: Finished difference Result 145 states and 249 transitions. [2024-11-03 00:54:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 00:54:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 143 [2024-11-03 00:54:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:24,361 INFO L225 Difference]: With dead ends: 145 [2024-11-03 00:54:24,362 INFO L226 Difference]: Without dead ends: 72 [2024-11-03 00:54:24,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 284 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 00:54:24,367 INFO L432 NwaCegarLoop]: 110 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, 110 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 00:54:24,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:54:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-03 00:54:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-03 00:54:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-03 00:54:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 110 transitions. [2024-11-03 00:54:24,404 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 110 transitions. Word has length 143 [2024-11-03 00:54:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:24,404 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 110 transitions. [2024-11-03 00:54:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 00:54:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 110 transitions. [2024-11-03 00:54:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-03 00:54:24,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:24,409 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:24,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 00:54:24,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:24,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:24,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash 482563998, now seen corresponding path program 1 times [2024-11-03 00:54:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387096977] [2024-11-03 00:54:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:24,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:54:24,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 00:54:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:25,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 00:54:25,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 00:54:26,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 00:54:26,773 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387096977] [2024-11-03 00:54:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [387096977] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:54:26,773 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:54:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 6 [2024-11-03 00:54:26,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154156033] [2024-11-03 00:54:26,774 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:54:26,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 00:54:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 00:54:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-03 00:54:26,779 INFO L87 Difference]: Start difference. First operand 72 states and 110 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-03 00:54:29,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:54:33,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:54:33,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:33,486 INFO L93 Difference]: Finished difference Result 326 states and 498 transitions. [2024-11-03 00:54:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 00:54:33,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 143 [2024-11-03 00:54:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:33,522 INFO L225 Difference]: With dead ends: 326 [2024-11-03 00:54:33,522 INFO L226 Difference]: Without dead ends: 257 [2024-11-03 00:54:33,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-03 00:54:33,524 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 296 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-03 00:54:33,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 648 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-03 00:54:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-03 00:54:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 173. [2024-11-03 00:54:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 119 states have internal predecessors, (162), 51 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-03 00:54:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 264 transitions. [2024-11-03 00:54:33,579 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 264 transitions. Word has length 143 [2024-11-03 00:54:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:33,580 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 264 transitions. [2024-11-03 00:54:33,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-03 00:54:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 264 transitions. [2024-11-03 00:54:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-03 00:54:33,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:33,585 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:33,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 00:54:33,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:33,786 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:33,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1105783904, now seen corresponding path program 1 times [2024-11-03 00:54:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:33,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84387293] [2024-11-03 00:54:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:33,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:33,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:33,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:54:33,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 00:54:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:34,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 00:54:34,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 168 proven. 54 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-11-03 00:54:35,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 00:54:35,911 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:35,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84387293] [2024-11-03 00:54:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [84387293] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 00:54:35,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 00:54:35,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-03 00:54:35,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26451640] [2024-11-03 00:54:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 00:54:35,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 00:54:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:35,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 00:54:35,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:54:35,917 INFO L87 Difference]: Start difference. First operand 173 states and 264 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 00:54:37,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:54:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:37,367 INFO L93 Difference]: Finished difference Result 355 states and 534 transitions. [2024-11-03 00:54:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 00:54:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 143 [2024-11-03 00:54:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:37,408 INFO L225 Difference]: With dead ends: 355 [2024-11-03 00:54:37,409 INFO L226 Difference]: Without dead ends: 185 [2024-11-03 00:54:37,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:54:37,412 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 46 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 00:54:37,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 151 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 00:54:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-03 00:54:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-03 00:54:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 128 states have internal predecessors, (168), 51 states have call successors, (51), 6 states have call predecessors, (51), 6 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-03 00:54:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 270 transitions. [2024-11-03 00:54:37,442 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 270 transitions. Word has length 143 [2024-11-03 00:54:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:37,443 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 270 transitions. [2024-11-03 00:54:37,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 00:54:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 270 transitions. [2024-11-03 00:54:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-03 00:54:37,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:37,446 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:37,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 00:54:37,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:37,647 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:37,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash -518977890, now seen corresponding path program 1 times [2024-11-03 00:54:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:37,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715996822] [2024-11-03 00:54:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:37,648 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:37,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:37,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:54:37,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 00:54:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:38,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 00:54:38,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 30 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-03 00:54:39,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-03 00:54:40,715 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715996822] [2024-11-03 00:54:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [715996822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:54:40,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:54:40,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2024-11-03 00:54:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764747380] [2024-11-03 00:54:40,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:54:40,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 00:54:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 00:54:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-03 00:54:40,717 INFO L87 Difference]: Start difference. First operand 185 states and 270 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-03 00:54:43,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:54:48,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:54:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:48,628 INFO L93 Difference]: Finished difference Result 465 states and 675 transitions. [2024-11-03 00:54:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 00:54:48,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 143 [2024-11-03 00:54:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:48,634 INFO L225 Difference]: With dead ends: 465 [2024-11-03 00:54:48,634 INFO L226 Difference]: Without dead ends: 283 [2024-11-03 00:54:48,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-11-03 00:54:48,636 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 364 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-03 00:54:48,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 503 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-03 00:54:48,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-03 00:54:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 242. [2024-11-03 00:54:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 173 states have (on average 1.346820809248555) internal successors, (233), 175 states have internal predecessors, (233), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 00:54:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 353 transitions. [2024-11-03 00:54:48,696 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 353 transitions. Word has length 143 [2024-11-03 00:54:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:48,698 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 353 transitions. [2024-11-03 00:54:48,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-03 00:54:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 353 transitions. [2024-11-03 00:54:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-03 00:54:48,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:48,700 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:48,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 00:54:48,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:48,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:48,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1163849979, now seen corresponding path program 1 times [2024-11-03 00:54:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733208848] [2024-11-03 00:54:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:48,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:48,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:48,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:54:48,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 00:54:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:49,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 00:54:49,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 168 proven. 54 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-11-03 00:54:52,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:55:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-03 00:55:00,889 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:55:00,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733208848] [2024-11-03 00:55:00,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [733208848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:55:00,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:55:00,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-03 00:55:00,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994657808] [2024-11-03 00:55:00,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:55:00,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 00:55:00,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:55:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 00:55:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-03 00:55:00,893 INFO L87 Difference]: Start difference. First operand 242 states and 353 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2024-11-03 00:55:06,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 00:55:08,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 00:55:13,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 00:55:16,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 00:55:21,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 00:55:25,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 00:55:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:55:26,386 INFO L93 Difference]: Finished difference Result 749 states and 1083 transitions. [2024-11-03 00:55:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 00:55:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 144 [2024-11-03 00:55:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:55:26,396 INFO L225 Difference]: With dead ends: 749 [2024-11-03 00:55:26,396 INFO L226 Difference]: Without dead ends: 510 [2024-11-03 00:55:26,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2024-11-03 00:55:26,401 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 259 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 94 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:55:26,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 412 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 24.1s Time] [2024-11-03 00:55:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-03 00:55:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 428. [2024-11-03 00:55:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 299 states have (on average 1.3010033444816054) internal successors, (389), 302 states have internal predecessors, (389), 111 states have call successors, (111), 17 states have call predecessors, (111), 17 states have return successors, (111), 108 states have call predecessors, (111), 111 states have call successors, (111) [2024-11-03 00:55:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 611 transitions. [2024-11-03 00:55:26,486 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 611 transitions. Word has length 144 [2024-11-03 00:55:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:55:26,487 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 611 transitions. [2024-11-03 00:55:26,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 4 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2024-11-03 00:55:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 611 transitions. [2024-11-03 00:55:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-03 00:55:26,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:55:26,489 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:26,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 00:55:26,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:55:26,690 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:55:26,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:55:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1973196605, now seen corresponding path program 1 times [2024-11-03 00:55:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:55:26,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744288198] [2024-11-03 00:55:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:55:26,692 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:55:26,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:55:26,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:55:26,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 00:55:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:55:27,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 00:55:27,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:55:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 168 proven. 54 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-11-03 00:55:29,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:55:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 00:55:29,864 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:55:29,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744288198] [2024-11-03 00:55:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [744288198] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 00:55:29,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 00:55:29,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-03 00:55:29,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567324795] [2024-11-03 00:55:29,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 00:55:29,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:55:29,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:55:29,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:55:29,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-03 00:55:29,866 INFO L87 Difference]: Start difference. First operand 428 states and 611 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 00:55:32,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:55:33,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:55:36,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 00:55:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:55:37,034 INFO L93 Difference]: Finished difference Result 1167 states and 1673 transitions. [2024-11-03 00:55:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:55:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 144 [2024-11-03 00:55:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:55:37,043 INFO L225 Difference]: With dead ends: 1167 [2024-11-03 00:55:37,043 INFO L226 Difference]: Without dead ends: 742 [2024-11-03 00:55:37,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-03 00:55:37,047 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 97 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:55:37,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 405 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-03 00:55:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-03 00:55:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 494. [2024-11-03 00:55:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 340 states have (on average 1.2676470588235293) internal successors, (431), 344 states have internal predecessors, (431), 132 states have call successors, (132), 21 states have call predecessors, (132), 21 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-03 00:55:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 695 transitions. [2024-11-03 00:55:37,151 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 695 transitions. Word has length 144 [2024-11-03 00:55:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:55:37,152 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 695 transitions. [2024-11-03 00:55:37,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 00:55:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 695 transitions. [2024-11-03 00:55:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-03 00:55:37,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:55:37,153 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:37,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 00:55:37,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:55:37,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:55:37,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:55:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2030454907, now seen corresponding path program 1 times [2024-11-03 00:55:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:55:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855866558] [2024-11-03 00:55:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:55:37,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:55:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:55:37,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:55:37,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 00:55:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:55:38,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-03 00:55:38,633 INFO L278 TraceCheckSpWp]: Computing forward predicates...