/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 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 05:43:23,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 05:43:23,939 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 05:43:23,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 05:43:23,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 05:43:23,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 05:43:23,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 05:43:23,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 05:43:23,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 05:43:23,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 05:43:23,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 05:43:23,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 05:43:23,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 05:43:23,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 05:43:23,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 05:43:23,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 05:43:23,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 05:43:23,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 05:43:23,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 05:43:23,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 05:43:23,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 05:43:23,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 05:43:23,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 05:43:23,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 05:43:23,986 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 05:43:23,987 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 05:43:23,987 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 05:43:23,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 05:43:23,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 05:43:23,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 05:43:23,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 05:43:23,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 05:43:23,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 05:43:23,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 05:43:23,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:23,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 05:43:23,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 05:43:23,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 05:43:23,989 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 05:43:23,990 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 05:43:23,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 05:43:23,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 05:43:23,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 05:43:23,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 05:43:23,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:24,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 05:43:24,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 05:43:24,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 05:43:24,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 05:43:24,254 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 05:43:24,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2024-11-03 05:43:25,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 05:43:25,918 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 05:43:25,918 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2024-11-03 05:43:25,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46626fb01/1a0ecca4df594b18a5020be4018ccc22/FLAG9084cc5d1 [2024-11-03 05:43:25,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46626fb01/1a0ecca4df594b18a5020be4018ccc22 [2024-11-03 05:43:25,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 05:43:25,948 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 05:43:25,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:25,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 05:43:25,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 05:43:25,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:25" (1/1) ... [2024-11-03 05:43:25,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557c840b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:25, skipping insertion in model container [2024-11-03 05:43:25,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:25" (1/1) ... [2024-11-03 05:43:25,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 05:43:26,140 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c[728,741] [2024-11-03 05:43:26,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:26,197 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 05:43:26,207 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c[728,741] [2024-11-03 05:43:26,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:26,258 INFO L204 MainTranslator]: Completed translation [2024-11-03 05:43:26,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26 WrapperNode [2024-11-03 05:43:26,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:26,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:26,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 05:43:26,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 05:43:26,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,292 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2024-11-03 05:43:26,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:26,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 05:43:26,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 05:43:26,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 05:43:26,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,317 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 05:43:26,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 05:43:26,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 05:43:26,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 05:43:26,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 05:43:26,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (1/1) ... [2024-11-03 05:43:26,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 05:43:26,372 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 05:43:26,375 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 05:43:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 05:43:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 05:43:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-03 05:43:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-03 05:43:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 05:43:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 05:43:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 05:43:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 05:43:26,485 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 05:43:26,487 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 05:43:26,811 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-03 05:43:26,811 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 05:43:26,821 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 05:43:26,822 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 05:43:26,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:26 BoogieIcfgContainer [2024-11-03 05:43:26,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 05:43:26,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 05:43:26,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 05:43:26,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 05:43:26,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:43:25" (1/3) ... [2024-11-03 05:43:26,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fff4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:26, skipping insertion in model container [2024-11-03 05:43:26,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:26" (2/3) ... [2024-11-03 05:43:26,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fff4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:26, skipping insertion in model container [2024-11-03 05:43:26,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:26" (3/3) ... [2024-11-03 05:43:26,828 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2024-11-03 05:43:26,840 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 05:43:26,840 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 05:43:26,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 05:43:26,893 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;@d2b817a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 05:43:26,893 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 05:43:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 05:43:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-03 05:43:26,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:26,908 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 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 05:43:26,909 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:26,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1428146956, now seen corresponding path program 1 times [2024-11-03 05:43:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068113361] [2024-11-03 05:43:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:26,923 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:26,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:26,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:26,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 05:43:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:27,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 05:43:27,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 05:43:27,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 05:43:27,400 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068113361] [2024-11-03 05:43:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2068113361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:27,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:27,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2024-11-03 05:43:27,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832828581] [2024-11-03 05:43:27,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:27,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 05:43:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 05:43:27,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-03 05:43:27,434 INFO L87 Difference]: Start difference. First operand has 52 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:27,876 INFO L93 Difference]: Finished difference Result 131 states and 209 transitions. [2024-11-03 05:43:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 05:43:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2024-11-03 05:43:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:27,891 INFO L225 Difference]: With dead ends: 131 [2024-11-03 05:43:27,891 INFO L226 Difference]: Without dead ends: 76 [2024-11-03 05:43:27,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:27,898 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:27,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 378 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:43:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-03 05:43:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2024-11-03 05:43:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 05:43:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-11-03 05:43:27,962 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 42 [2024-11-03 05:43:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:27,962 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-11-03 05:43:27,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-11-03 05:43:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-03 05:43:27,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:27,969 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 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 05:43:27,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:28,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:28,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:28,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash -649725496, now seen corresponding path program 1 times [2024-11-03 05:43:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723640817] [2024-11-03 05:43:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:28,173 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:28,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:28,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:28,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 05:43:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:28,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-03 05:43:28,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 05:43:28,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-03 05:43:28,927 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723640817] [2024-11-03 05:43:28,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1723640817] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:28,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 17 [2024-11-03 05:43:28,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029146223] [2024-11-03 05:43:28,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:28,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 05:43:28,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:28,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 05:43:28,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:28,932 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:29,344 INFO L93 Difference]: Finished difference Result 98 states and 137 transitions. [2024-11-03 05:43:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 05:43:29,345 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2024-11-03 05:43:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:29,346 INFO L225 Difference]: With dead ends: 98 [2024-11-03 05:43:29,347 INFO L226 Difference]: Without dead ends: 77 [2024-11-03 05:43:29,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:29,350 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 43 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:29,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 419 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-03 05:43:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61. [2024-11-03 05:43:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 52 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-03 05:43:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2024-11-03 05:43:29,374 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 45 [2024-11-03 05:43:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:29,374 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2024-11-03 05:43:29,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2024-11-03 05:43:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 05:43:29,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:29,378 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:29,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 05:43:29,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:29,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:29,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash 760812650, now seen corresponding path program 1 times [2024-11-03 05:43:29,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:29,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289364217] [2024-11-03 05:43:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:29,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:29,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:29,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 05:43:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:29,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-03 05:43:29,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 05:43:29,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-03 05:43:30,313 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289364217] [2024-11-03 05:43:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289364217] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:30,314 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 7] imperfect sequences [] total 19 [2024-11-03 05:43:30,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479233108] [2024-11-03 05:43:30,314 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:30,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 05:43:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 05:43:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:30,316 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:30,855 INFO L93 Difference]: Finished difference Result 109 states and 152 transitions. [2024-11-03 05:43:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 05:43:30,856 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-11-03 05:43:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:30,858 INFO L225 Difference]: With dead ends: 109 [2024-11-03 05:43:30,858 INFO L226 Difference]: Without dead ends: 91 [2024-11-03 05:43:30,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:30,860 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:30,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 565 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 05:43:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-03 05:43:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2024-11-03 05:43:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 62 states have internal predecessors, (77), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-03 05:43:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2024-11-03 05:43:30,870 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 49 [2024-11-03 05:43:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:30,873 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2024-11-03 05:43:30,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2024-11-03 05:43:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 05:43:30,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:30,874 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:30,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 05:43:31,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:31,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:31,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1018978088, now seen corresponding path program 1 times [2024-11-03 05:43:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956388919] [2024-11-03 05:43:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:31,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:31,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 05:43:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:31,144 WARN L253 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-03 05:43:31,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 05:43:31,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-03 05:43:31,813 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956388919] [2024-11-03 05:43:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1956388919] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:31,814 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:31,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 5] imperfect sequences [] total 20 [2024-11-03 05:43:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806542416] [2024-11-03 05:43:31,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:31,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 05:43:31,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:31,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 05:43:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:31,816 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 05:43:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:32,225 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2024-11-03 05:43:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 05:43:32,226 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2024-11-03 05:43:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:32,227 INFO L225 Difference]: With dead ends: 104 [2024-11-03 05:43:32,227 INFO L226 Difference]: Without dead ends: 98 [2024-11-03 05:43:32,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-03 05:43:32,229 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:32,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 436 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-03 05:43:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2024-11-03 05:43:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-03 05:43:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2024-11-03 05:43:32,238 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 49 [2024-11-03 05:43:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:32,239 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2024-11-03 05:43:32,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 05:43:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2024-11-03 05:43:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 05:43:32,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:32,242 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:32,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 05:43:32,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:32,443 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:32,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1076236390, now seen corresponding path program 1 times [2024-11-03 05:43:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:32,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383039674] [2024-11-03 05:43:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:32,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:32,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:32,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:32,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 05:43:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:32,518 WARN L253 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-03 05:43:32,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-03 05:43:32,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-03 05:43:33,027 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383039674] [2024-11-03 05:43:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383039674] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:33,027 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:33,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 6] imperfect sequences [] total 21 [2024-11-03 05:43:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979588797] [2024-11-03 05:43:33,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:33,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 05:43:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 05:43:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:33,029 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 21 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 15 states have internal predecessors, (50), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:33,438 INFO L93 Difference]: Finished difference Result 102 states and 135 transitions. [2024-11-03 05:43:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-03 05:43:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 15 states have internal predecessors, (50), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-11-03 05:43:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:33,440 INFO L225 Difference]: With dead ends: 102 [2024-11-03 05:43:33,440 INFO L226 Difference]: Without dead ends: 84 [2024-11-03 05:43:33,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:43:33,442 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:33,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 634 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-03 05:43:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2024-11-03 05:43:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 56 states have internal predecessors, (67), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-03 05:43:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-11-03 05:43:33,458 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 49 [2024-11-03 05:43:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:33,459 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-11-03 05:43:33,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 15 states have internal predecessors, (50), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-11-03 05:43:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 05:43:33,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:33,461 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:33,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:33,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:33,661 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:33,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 527945050, now seen corresponding path program 1 times [2024-11-03 05:43:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:33,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197881801] [2024-11-03 05:43:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:33,663 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:33,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:33,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 05:43:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:33,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-03 05:43:33,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:34,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-03 05:43:34,390 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197881801] [2024-11-03 05:43:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [197881801] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:34,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:34,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2024-11-03 05:43:34,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120380271] [2024-11-03 05:43:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:34,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 05:43:34,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:34,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 05:43:34,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:34,393 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 05:43:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:34,406 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2024-11-03 05:43:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:34,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2024-11-03 05:43:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:34,408 INFO L225 Difference]: With dead ends: 87 [2024-11-03 05:43:34,408 INFO L226 Difference]: Without dead ends: 66 [2024-11-03 05:43:34,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:34,409 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:34,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-03 05:43:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-03 05:43:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2) internal successors, (66), 56 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-03 05:43:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2024-11-03 05:43:34,423 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 54 [2024-11-03 05:43:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:34,424 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2024-11-03 05:43:34,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 05:43:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2024-11-03 05:43:34,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 05:43:34,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:34,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:34,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 05:43:34,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:34,629 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:34,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash -493123304, now seen corresponding path program 1 times [2024-11-03 05:43:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647577127] [2024-11-03 05:43:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:34,631 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:34,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:34,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:34,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 05:43:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:34,710 WARN L253 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-03 05:43:34,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 05:43:34,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 05:43:35,020 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647577127] [2024-11-03 05:43:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1647577127] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-03 05:43:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168269334] [2024-11-03 05:43:35,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:35,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 05:43:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 05:43:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-03 05:43:35,022 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:35,158 INFO L93 Difference]: Finished difference Result 134 states and 174 transitions. [2024-11-03 05:43:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 05:43:35,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-03 05:43:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:35,159 INFO L225 Difference]: With dead ends: 134 [2024-11-03 05:43:35,160 INFO L226 Difference]: Without dead ends: 75 [2024-11-03 05:43:35,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-03 05:43:35,161 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 7 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:35,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 338 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-03 05:43:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-11-03 05:43:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-03 05:43:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2024-11-03 05:43:35,175 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 54 [2024-11-03 05:43:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:35,175 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2024-11-03 05:43:35,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2024-11-03 05:43:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-03 05:43:35,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:35,178 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:35,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 05:43:35,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:35,381 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:35,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1013899159, now seen corresponding path program 1 times [2024-11-03 05:43:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:35,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559561622] [2024-11-03 05:43:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:35,381 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:35,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:35,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 05:43:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:35,458 WARN L253 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-03 05:43:35,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 05:43:35,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 05:43:35,896 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:35,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559561622] [2024-11-03 05:43:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [559561622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:35,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:35,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2024-11-03 05:43:35,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989968747] [2024-11-03 05:43:35,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:35,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 05:43:35,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 05:43:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-03 05:43:35,898 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:36,343 INFO L93 Difference]: Finished difference Result 163 states and 221 transitions. [2024-11-03 05:43:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 05:43:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2024-11-03 05:43:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:36,345 INFO L225 Difference]: With dead ends: 163 [2024-11-03 05:43:36,345 INFO L226 Difference]: Without dead ends: 99 [2024-11-03 05:43:36,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2024-11-03 05:43:36,346 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 76 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:36,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 283 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:43:36,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-03 05:43:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2024-11-03 05:43:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 68 states have internal predecessors, (83), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-03 05:43:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2024-11-03 05:43:36,366 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 56 [2024-11-03 05:43:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:36,366 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2024-11-03 05:43:36,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2024-11-03 05:43:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-03 05:43:36,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:36,368 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:36,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:36,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:36,568 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:36,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1773979134, now seen corresponding path program 1 times [2024-11-03 05:43:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616034389] [2024-11-03 05:43:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:36,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:36,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:36,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:36,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 05:43:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:36,651 WARN L253 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 05:43:36,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:36,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:43:37,127 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:37,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616034389] [2024-11-03 05:43:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [616034389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:37,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:37,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 18 [2024-11-03 05:43:37,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452955819] [2024-11-03 05:43:37,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:37,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 05:43:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 05:43:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:37,130 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:37,417 INFO L93 Difference]: Finished difference Result 114 states and 150 transitions. [2024-11-03 05:43:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 05:43:37,417 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2024-11-03 05:43:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:37,418 INFO L225 Difference]: With dead ends: 114 [2024-11-03 05:43:37,418 INFO L226 Difference]: Without dead ends: 87 [2024-11-03 05:43:37,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:37,420 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:37,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 485 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:43:37,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-03 05:43:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2024-11-03 05:43:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 67 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2024-11-03 05:43:37,435 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 57 [2024-11-03 05:43:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:37,435 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2024-11-03 05:43:37,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 05:43:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2024-11-03 05:43:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-03 05:43:37,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:37,436 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:37,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-03 05:43:37,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:37,638 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:37,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1462120654, now seen corresponding path program 1 times [2024-11-03 05:43:37,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:37,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743412282] [2024-11-03 05:43:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:37,639 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:37,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:37,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:37,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 05:43:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:37,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-03 05:43:37,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:37,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:43:38,090 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:38,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743412282] [2024-11-03 05:43:38,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1743412282] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:38,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:38,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 17 [2024-11-03 05:43:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998271403] [2024-11-03 05:43:38,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:38,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:43:38,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:43:38,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:38,092 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 05:43:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:38,153 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2024-11-03 05:43:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:43:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2024-11-03 05:43:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:38,154 INFO L225 Difference]: With dead ends: 94 [2024-11-03 05:43:38,154 INFO L226 Difference]: Without dead ends: 67 [2024-11-03 05:43:38,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:38,155 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:38,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-03 05:43:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-03 05:43:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.280701754385965) internal successors, (73), 59 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 05:43:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2024-11-03 05:43:38,164 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 57 [2024-11-03 05:43:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:38,164 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2024-11-03 05:43:38,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 05:43:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2024-11-03 05:43:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 05:43:38,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:38,165 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:38,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:38,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:38,367 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:38,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2134089399, now seen corresponding path program 2 times [2024-11-03 05:43:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:38,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771052462] [2024-11-03 05:43:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:38,368 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:38,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:38,370 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:38,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 05:43:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:38,432 WARN L253 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-03 05:43:38,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-03 05:43:38,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-03 05:43:39,805 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771052462] [2024-11-03 05:43:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [771052462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:39,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2024-11-03 05:43:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491650616] [2024-11-03 05:43:39,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:39,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 05:43:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 05:43:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:39,808 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 05:43:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:40,310 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2024-11-03 05:43:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 05:43:40,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2024-11-03 05:43:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:40,311 INFO L225 Difference]: With dead ends: 82 [2024-11-03 05:43:40,311 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 05:43:40,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-03 05:43:40,313 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:40,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 212 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 05:43:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 05:43:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:43:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 05:43:40,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2024-11-03 05:43:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:40,314 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 05:43:40,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-03 05:43:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 05:43:40,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 05:43:40,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 05:43:40,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-03 05:43:40,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:40,520 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:40,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 05:43:41,129 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 05:43:41,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:43:41 BoogieIcfgContainer [2024-11-03 05:43:41,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 05:43:41,150 INFO L158 Benchmark]: Toolchain (without parser) took 15201.72ms. Allocated memory was 196.1MB in the beginning and 330.3MB in the end (delta: 134.2MB). Free memory was 155.5MB in the beginning and 108.8MB in the end (delta: 46.7MB). Peak memory consumption was 184.2MB. Max. memory is 8.0GB. [2024-11-03 05:43:41,150 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 196.1MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 05:43:41,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.70ms. Allocated memory is still 196.1MB. Free memory was 155.5MB in the beginning and 139.7MB in the end (delta: 15.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-11-03 05:43:41,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.89ms. Allocated memory is still 196.1MB. Free memory was 139.7MB in the beginning and 138.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 05:43:41,151 INFO L158 Benchmark]: Boogie Preprocessor took 40.76ms. Allocated memory is still 196.1MB. Free memory was 138.0MB in the beginning and 135.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 05:43:41,151 INFO L158 Benchmark]: RCFGBuilder took 487.31ms. Allocated memory is still 196.1MB. Free memory was 135.6MB in the beginning and 118.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2024-11-03 05:43:41,152 INFO L158 Benchmark]: TraceAbstraction took 14326.03ms. Allocated memory was 196.1MB in the beginning and 330.3MB in the end (delta: 134.2MB). Free memory was 118.1MB in the beginning and 108.8MB in the end (delta: 9.3MB). Peak memory consumption was 146.5MB. Max. memory is 8.0GB. [2024-11-03 05:43:41,153 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 196.1MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.70ms. Allocated memory is still 196.1MB. Free memory was 155.5MB in the beginning and 139.7MB in the end (delta: 15.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.89ms. Allocated memory is still 196.1MB. Free memory was 139.7MB in the beginning and 138.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.76ms. Allocated memory is still 196.1MB. Free memory was 138.0MB in the beginning and 135.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 487.31ms. Allocated memory is still 196.1MB. Free memory was 135.6MB in the beginning and 118.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 14326.03ms. Allocated memory was 196.1MB in the beginning and 330.3MB in the end (delta: 134.2MB). Free memory was 118.1MB in the beginning and 108.8MB in the end (delta: 9.3MB). Peak memory consumption was 146.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 4204 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3724 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2996 IncrementalHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 480 mSDtfsCounter, 2996 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1170 GetRequests, 958 SyntacticMatches, 8 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=4, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 129 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 573 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1124 ConstructedInterpolants, 14 QuantifiedInterpolants, 2822 SizeOfPredicates, 109 NumberOfNonLiveVariables, 1066 ConjunctsInSsa, 511 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 596/696 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((1 != \old(m)) || (0 != \old(e))) || (m < 16777216)) && (0 != \old(m))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((0 != \old(m)) && ((1 != \old(m)) || (0 != \old(e)))) - ProcedureContractResult [Line: 24]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((0 != m) || (0 == \result)) - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 == cond) Ensures: (1 == cond) RESULT: Ultimate proved your program to be correct! [2024-11-03 05:43:41,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...