/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_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 05:42:58,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 05:42:58,639 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 05:42:58,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 05:42:58,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 05:42:58,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 05:42:58,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 05:42:58,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 05:42:58,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 05:42:58,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 05:42:58,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 05:42:58,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 05:42:58,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 05:42:58,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 05:42:58,682 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 05:42:58,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 05:42:58,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 05:42:58,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 05:42:58,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 05:42:58,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 05:42:58,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 05:42:58,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 05:42:58,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 05:42:58,685 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 05:42:58,685 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 05:42:58,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 05:42:58,686 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 05:42:58,686 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 05:42:58,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 05:42:58,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 05:42:58,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 05:42:58,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 05:42:58,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 05:42:58,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 05:42:58,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:42:58,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 05:42:58,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 05:42:58,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 05:42:58,688 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 05:42:58,688 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 05:42:58,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 05:42:58,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 05:42:58,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 05:42:58,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 05:42:58,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 05:42:58,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 05:42:58,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 05:42:58,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 05:42:58,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 05:42:58,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 05:42:58,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2024-11-03 05:43:00,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 05:43:00,497 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 05:43:00,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2024-11-03 05:43:00,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebb1df90/c9013ee6babe425ebecd94663c6d8400/FLAGd71b58797 [2024-11-03 05:43:00,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebb1df90/c9013ee6babe425ebecd94663c6d8400 [2024-11-03 05:43:00,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 05:43:00,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 05:43:00,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:00,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 05:43:00,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 05:43:00,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21478d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00, skipping insertion in model container [2024-11-03 05:43:00,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 05:43:00,753 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_1-2a.c.cil.c[755,768] [2024-11-03 05:43:00,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:00,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 05:43:00,831 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_1-2a.c.cil.c[755,768] [2024-11-03 05:43:00,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:00,883 INFO L204 MainTranslator]: Completed translation [2024-11-03 05:43:00,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00 WrapperNode [2024-11-03 05:43:00,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:00,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:00,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 05:43:00,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 05:43:00,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,923 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 149 [2024-11-03 05:43:00,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:00,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 05:43:00,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 05:43:00,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 05:43:00,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,955 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 05:43:00,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 05:43:00,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 05:43:00,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 05:43:00,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 05:43:00,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (1/1) ... [2024-11-03 05:43:00,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 05:43:01,010 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 05:43:01,017 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 05:43:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 05:43:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 05:43:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-03 05:43:01,038 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-03 05:43:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 05:43:01,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 05:43:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 05:43:01,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 05:43:01,108 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 05:43:01,110 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 05:43:01,412 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-03 05:43:01,412 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 05:43:01,430 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 05:43:01,430 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 05:43:01,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:01 BoogieIcfgContainer [2024-11-03 05:43:01,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 05:43:01,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 05:43:01,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 05:43:01,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 05:43:01,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:43:00" (1/3) ... [2024-11-03 05:43:01,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3485154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:01, skipping insertion in model container [2024-11-03 05:43:01,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:00" (2/3) ... [2024-11-03 05:43:01,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3485154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:01, skipping insertion in model container [2024-11-03 05:43:01,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:01" (3/3) ... [2024-11-03 05:43:01,448 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2024-11-03 05:43:01,463 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 05:43:01,464 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 05:43:01,511 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 05:43:01,516 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;@79701e3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 05:43:01,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 05:43:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 05:43:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-03 05:43:01,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:01,529 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:01,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:01,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -760882007, now seen corresponding path program 1 times [2024-11-03 05:43:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890782250] [2024-11-03 05:43:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:01,544 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:01,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:01,547 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 05:43:01,550 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 05:43:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:01,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-03 05:43:01,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:02,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:02,367 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:02,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890782250] [2024-11-03 05:43:02,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1890782250] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:02,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 16 [2024-11-03 05:43:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984546043] [2024-11-03 05:43:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:02,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 05:43:02,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 05:43:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:02,402 INFO L87 Difference]: Start difference. First operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-03 05:43:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:02,810 INFO L93 Difference]: Finished difference Result 178 states and 306 transitions. [2024-11-03 05:43:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 05:43:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-03 05:43:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:02,821 INFO L225 Difference]: With dead ends: 178 [2024-11-03 05:43:02,822 INFO L226 Difference]: Without dead ends: 105 [2024-11-03 05:43:02,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:02,828 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 24 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:02,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 927 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-03 05:43:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2024-11-03 05:43:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-03 05:43:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2024-11-03 05:43:02,879 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 32 [2024-11-03 05:43:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:02,879 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2024-11-03 05:43:02,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-03 05:43:02,880 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2024-11-03 05:43:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 05:43:02,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:02,882 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:43:02,885 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 05:43:03,082 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 05:43:03,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:03,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash 975798983, now seen corresponding path program 1 times [2024-11-03 05:43:03,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:03,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924286579] [2024-11-03 05:43:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:03,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:03,088 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 05:43:03,089 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 05:43:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:03,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-03 05:43:03,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:03,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:03,622 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924286579] [2024-11-03 05:43:03,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [924286579] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:03,623 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:03,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 6] imperfect sequences [] total 17 [2024-11-03 05:43:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72135574] [2024-11-03 05:43:03,623 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:03,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-03 05:43:03,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:03,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-03 05:43:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:03,626 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:04,126 INFO L93 Difference]: Finished difference Result 193 states and 302 transitions. [2024-11-03 05:43:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 05:43:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2024-11-03 05:43:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:04,130 INFO L225 Difference]: With dead ends: 193 [2024-11-03 05:43:04,130 INFO L226 Difference]: Without dead ends: 151 [2024-11-03 05:43:04,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:04,132 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 68 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:04,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1224 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-03 05:43:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 99. [2024-11-03 05:43:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 84 states have (on average 1.4047619047619047) internal successors, (118), 82 states have internal predecessors, (118), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-03 05:43:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 145 transitions. [2024-11-03 05:43:04,153 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 145 transitions. Word has length 36 [2024-11-03 05:43:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:04,154 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 145 transitions. [2024-11-03 05:43:04,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 145 transitions. [2024-11-03 05:43:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 05:43:04,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:04,156 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:43:04,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:04,358 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 05:43:04,359 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:04,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1655857353, now seen corresponding path program 1 times [2024-11-03 05:43:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:04,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864871367] [2024-11-03 05:43:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:04,360 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:04,363 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 05:43:04,364 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 05:43:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:04,423 WARN L253 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-03 05:43:04,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:04,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:04,918 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:04,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864871367] [2024-11-03 05:43:04,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [864871367] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:04,919 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:04,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 7] imperfect sequences [] total 20 [2024-11-03 05:43:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776691114] [2024-11-03 05:43:04,919 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:04,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 05:43:04,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:04,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 05:43:04,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:04,921 INFO L87 Difference]: Start difference. First operand 99 states and 145 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:05,694 INFO L93 Difference]: Finished difference Result 263 states and 415 transitions. [2024-11-03 05:43:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 05:43:05,694 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2024-11-03 05:43:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:05,696 INFO L225 Difference]: With dead ends: 263 [2024-11-03 05:43:05,696 INFO L226 Difference]: Without dead ends: 215 [2024-11-03 05:43:05,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-03 05:43:05,698 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 170 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:05,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 925 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 05:43:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-03 05:43:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 161. [2024-11-03 05:43:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 137 states have internal predecessors, (193), 17 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (23), 23 states have call predecessors, (23), 16 states have call successors, (23) [2024-11-03 05:43:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2024-11-03 05:43:05,713 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 233 transitions. Word has length 36 [2024-11-03 05:43:05,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:05,713 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 233 transitions. [2024-11-03 05:43:05,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 233 transitions. [2024-11-03 05:43:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 05:43:05,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:05,716 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:05,719 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 05:43:05,917 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 05:43:05,918 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:05,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash -371678158, now seen corresponding path program 1 times [2024-11-03 05:43:05,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975658671] [2024-11-03 05:43:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:05,922 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 05:43:05,923 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 05:43:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:05,974 WARN L253 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-03 05:43:05,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:06,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:06,412 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:06,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975658671] [2024-11-03 05:43:06,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [975658671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:06,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:06,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 19 [2024-11-03 05:43:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693228627] [2024-11-03 05:43:06,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:06,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 05:43:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 05:43:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:06,414 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:06,951 INFO L93 Difference]: Finished difference Result 211 states and 324 transitions. [2024-11-03 05:43:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 05:43:06,952 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-11-03 05:43:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:06,954 INFO L225 Difference]: With dead ends: 211 [2024-11-03 05:43:06,954 INFO L226 Difference]: Without dead ends: 173 [2024-11-03 05:43:06,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:43:06,956 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 37 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:06,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1029 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-03 05:43:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 152. [2024-11-03 05:43:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.368421052631579) internal successors, (182), 130 states have internal predecessors, (182), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (21), 21 states have call predecessors, (21), 14 states have call successors, (21) [2024-11-03 05:43:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 218 transitions. [2024-11-03 05:43:06,968 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 218 transitions. Word has length 40 [2024-11-03 05:43:06,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:06,969 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 218 transitions. [2024-11-03 05:43:06,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 218 transitions. [2024-11-03 05:43:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 05:43:06,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:06,971 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:06,976 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 05:43:07,172 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 05:43:07,173 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:07,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash -280935876, now seen corresponding path program 1 times [2024-11-03 05:43:07,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772736694] [2024-11-03 05:43:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:07,174 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:07,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:07,178 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 05:43:07,178 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 05:43:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:07,238 WARN L253 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-03 05:43:07,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:07,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:07,657 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772736694] [2024-11-03 05:43:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [772736694] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:07,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 18 [2024-11-03 05:43:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73995526] [2024-11-03 05:43:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:07,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:43:07,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:43:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:07,659 INFO L87 Difference]: Start difference. First operand 152 states and 218 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:07,781 INFO L93 Difference]: Finished difference Result 218 states and 321 transitions. [2024-11-03 05:43:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:43:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-03 05:43:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:07,783 INFO L225 Difference]: With dead ends: 218 [2024-11-03 05:43:07,783 INFO L226 Difference]: Without dead ends: 180 [2024-11-03 05:43:07,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:07,785 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 32 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:07,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 487 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-03 05:43:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-11-03 05:43:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 156 states have (on average 1.3846153846153846) internal successors, (216), 155 states have internal predecessors, (216), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-03 05:43:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 258 transitions. [2024-11-03 05:43:07,804 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 258 transitions. Word has length 40 [2024-11-03 05:43:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:07,804 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 258 transitions. [2024-11-03 05:43:07,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 258 transitions. [2024-11-03 05:43:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-03 05:43:07,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:07,806 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:43:07,810 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 05:43:08,009 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 05:43:08,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:08,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2082074321, now seen corresponding path program 1 times [2024-11-03 05:43:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:08,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426587301] [2024-11-03 05:43:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:08,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:08,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:08,013 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 05:43:08,014 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 05:43:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:08,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-03 05:43:08,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:08,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:08,563 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426587301] [2024-11-03 05:43:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1426587301] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:08,563 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 4] imperfect sequences [] total 21 [2024-11-03 05:43:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840561672] [2024-11-03 05:43:08,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 05:43:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 05:43:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:08,566 INFO L87 Difference]: Start difference. First operand 178 states and 258 transitions. Second operand has 21 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:09,103 INFO L93 Difference]: Finished difference Result 288 states and 433 transitions. [2024-11-03 05:43:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-03 05:43:09,104 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2024-11-03 05:43:09,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:09,106 INFO L225 Difference]: With dead ends: 288 [2024-11-03 05:43:09,106 INFO L226 Difference]: Without dead ends: 222 [2024-11-03 05:43:09,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-03 05:43:09,108 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 94 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:09,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1036 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-03 05:43:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 203. [2024-11-03 05:43:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 183 states have (on average 1.3278688524590163) internal successors, (243), 180 states have internal predecessors, (243), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 22 states have call predecessors, (22), 15 states have call successors, (22) [2024-11-03 05:43:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 281 transitions. [2024-11-03 05:43:09,124 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 281 transitions. Word has length 43 [2024-11-03 05:43:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:09,125 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 281 transitions. [2024-11-03 05:43:09,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 281 transitions. [2024-11-03 05:43:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 05:43:09,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:09,128 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:43:09,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:09,328 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 05:43:09,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:09,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397194, now seen corresponding path program 1 times [2024-11-03 05:43:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:09,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412024432] [2024-11-03 05:43:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:09,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:09,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:09,330 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 05:43:09,331 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 05:43:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:09,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-03 05:43:09,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:09,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:09,762 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412024432] [2024-11-03 05:43:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [412024432] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:09,762 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 6] imperfect sequences [] total 21 [2024-11-03 05:43:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704912887] [2024-11-03 05:43:09,762 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:09,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 05:43:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 05:43:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:09,765 INFO L87 Difference]: Start difference. First operand 203 states and 281 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:10,334 INFO L93 Difference]: Finished difference Result 315 states and 462 transitions. [2024-11-03 05:43:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-03 05:43:10,335 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2024-11-03 05:43:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:10,337 INFO L225 Difference]: With dead ends: 315 [2024-11-03 05:43:10,337 INFO L226 Difference]: Without dead ends: 279 [2024-11-03 05:43:10,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2024-11-03 05:43:10,338 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 79 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:10,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 950 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 05:43:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-03 05:43:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 241. [2024-11-03 05:43:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 217 states have (on average 1.3225806451612903) internal successors, (287), 215 states have internal predecessors, (287), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-03 05:43:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2024-11-03 05:43:10,352 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 44 [2024-11-03 05:43:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:10,353 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2024-11-03 05:43:10,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2024-11-03 05:43:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 05:43:10,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:10,355 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:43:10,359 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 05:43:10,556 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 05:43:10,556 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:10,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -956562740, now seen corresponding path program 1 times [2024-11-03 05:43:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252912905] [2024-11-03 05:43:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:10,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:10,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:10,560 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 05:43:10,561 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 05:43:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:10,616 WARN L253 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-03 05:43:10,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:10,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:10,988 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252912905] [2024-11-03 05:43:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [252912905] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:10,988 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 5] imperfect sequences [] total 22 [2024-11-03 05:43:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755388765] [2024-11-03 05:43:10,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:10,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 05:43:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 05:43:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2024-11-03 05:43:10,990 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 17 states have internal predecessors, (53), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:11,438 INFO L93 Difference]: Finished difference Result 266 states and 379 transitions. [2024-11-03 05:43:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 05:43:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 17 states have internal predecessors, (53), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2024-11-03 05:43:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:11,442 INFO L225 Difference]: With dead ends: 266 [2024-11-03 05:43:11,442 INFO L226 Difference]: Without dead ends: 259 [2024-11-03 05:43:11,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2024-11-03 05:43:11,444 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 64 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:11,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 948 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-03 05:43:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 241. [2024-11-03 05:43:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 217 states have (on average 1.3087557603686637) internal successors, (284), 215 states have internal predecessors, (284), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-03 05:43:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 330 transitions. [2024-11-03 05:43:11,462 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 330 transitions. Word has length 44 [2024-11-03 05:43:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:11,462 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 330 transitions. [2024-11-03 05:43:11,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 17 states have internal predecessors, (53), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 330 transitions. [2024-11-03 05:43:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 05:43:11,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:11,464 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:11,467 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 05:43:11,664 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 05:43:11,664 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:11,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash -3100185, now seen corresponding path program 2 times [2024-11-03 05:43:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:11,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764116278] [2024-11-03 05:43:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:11,665 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:11,666 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 05:43:11,667 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 05:43:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:11,718 WARN L253 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-03 05:43:11,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:11,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:12,258 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764116278] [2024-11-03 05:43:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1764116278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:12,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 20 [2024-11-03 05:43:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32505755] [2024-11-03 05:43:12,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:12,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 05:43:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 05:43:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:12,261 INFO L87 Difference]: Start difference. First operand 241 states and 330 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 05:43:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:12,802 INFO L93 Difference]: Finished difference Result 481 states and 681 transitions. [2024-11-03 05:43:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-03 05:43:12,803 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2024-11-03 05:43:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:12,805 INFO L225 Difference]: With dead ends: 481 [2024-11-03 05:43:12,805 INFO L226 Difference]: Without dead ends: 322 [2024-11-03 05:43:12,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2024-11-03 05:43:12,809 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 88 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:12,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 971 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-03 05:43:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 245. [2024-11-03 05:43:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 220 states have (on average 1.3136363636363637) internal successors, (289), 219 states have internal predecessors, (289), 20 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (33), 26 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-03 05:43:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 342 transitions. [2024-11-03 05:43:12,819 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 342 transitions. Word has length 44 [2024-11-03 05:43:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:12,820 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 342 transitions. [2024-11-03 05:43:12,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 05:43:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 342 transitions. [2024-11-03 05:43:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 05:43:12,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:12,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:12,824 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 05:43:13,021 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 05:43:13,022 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:13,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash -261265623, now seen corresponding path program 1 times [2024-11-03 05:43:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:13,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975014799] [2024-11-03 05:43:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:13,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:13,024 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 05:43:13,026 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 05:43:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:13,083 WARN L253 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 05:43:13,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:13,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:13,555 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975014799] [2024-11-03 05:43:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [975014799] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2024-11-03 05:43:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557326961] [2024-11-03 05:43:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:13,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 05:43:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 05:43:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:13,557 INFO L87 Difference]: Start difference. First operand 245 states and 342 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:13,626 INFO L93 Difference]: Finished difference Result 251 states and 347 transitions. [2024-11-03 05:43:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 05:43:13,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-03 05:43:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:13,628 INFO L225 Difference]: With dead ends: 251 [2024-11-03 05:43:13,628 INFO L226 Difference]: Without dead ends: 249 [2024-11-03 05:43:13,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:13,629 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:13,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 460 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-03 05:43:13,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-03 05:43:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 223 states have (on average 1.3094170403587444) internal successors, (292), 222 states have internal predecessors, (292), 20 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (33), 26 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-03 05:43:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 345 transitions. [2024-11-03 05:43:13,644 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 345 transitions. Word has length 44 [2024-11-03 05:43:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:13,645 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 345 transitions. [2024-11-03 05:43:13,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 345 transitions. [2024-11-03 05:43:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-03 05:43:13,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:13,646 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:13,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-03 05:43:13,847 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 05:43:13,847 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:13,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash 561980754, now seen corresponding path program 1 times [2024-11-03 05:43:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:13,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700760575] [2024-11-03 05:43:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:13,848 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:13,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:13,851 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 05:43:13,852 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 05:43:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:13,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-03 05:43:13,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:14,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:14,267 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700760575] [2024-11-03 05:43:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1700760575] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:14,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2024-11-03 05:43:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267994659] [2024-11-03 05:43:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:14,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 05:43:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 05:43:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:14,269 INFO L87 Difference]: Start difference. First operand 249 states and 345 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:14,289 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2024-11-03 05:43:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:14,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-11-03 05:43:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:14,291 INFO L225 Difference]: With dead ends: 383 [2024-11-03 05:43:14,291 INFO L226 Difference]: Without dead ends: 331 [2024-11-03 05:43:14,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:14,292 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 28 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:14,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 282 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-03 05:43:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 268. [2024-11-03 05:43:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 241 states have (on average 1.3112033195020747) internal successors, (316), 239 states have internal predecessors, (316), 21 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (34), 27 states have call predecessors, (34), 20 states have call successors, (34) [2024-11-03 05:43:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 371 transitions. [2024-11-03 05:43:14,302 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 371 transitions. Word has length 45 [2024-11-03 05:43:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:14,303 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 371 transitions. [2024-11-03 05:43:14,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 371 transitions. [2024-11-03 05:43:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 05:43:14,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:14,304 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2024-11-03 05:43:14,307 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 05:43:14,505 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 05:43:14,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:14,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2079579127, now seen corresponding path program 1 times [2024-11-03 05:43:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:14,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103149015] [2024-11-03 05:43:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:14,507 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:14,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:14,510 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:14,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-03 05:43:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:14,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-03 05:43:14,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:14,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:15,214 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:15,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103149015] [2024-11-03 05:43:15,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1103149015] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:15,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:15,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 26 [2024-11-03 05:43:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551340179] [2024-11-03 05:43:15,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:15,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 05:43:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 05:43:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2024-11-03 05:43:15,216 INFO L87 Difference]: Start difference. First operand 268 states and 371 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 05:43:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:15,752 INFO L93 Difference]: Finished difference Result 325 states and 447 transitions. [2024-11-03 05:43:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-03 05:43:15,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2024-11-03 05:43:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:15,755 INFO L225 Difference]: With dead ends: 325 [2024-11-03 05:43:15,755 INFO L226 Difference]: Without dead ends: 316 [2024-11-03 05:43:15,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2024-11-03 05:43:15,756 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 48 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:15,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 919 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-03 05:43:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 284. [2024-11-03 05:43:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 257 states have (on average 1.2957198443579767) internal successors, (333), 255 states have internal predecessors, (333), 21 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (34), 27 states have call predecessors, (34), 20 states have call successors, (34) [2024-11-03 05:43:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 388 transitions. [2024-11-03 05:43:15,770 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 388 transitions. Word has length 48 [2024-11-03 05:43:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:15,770 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 388 transitions. [2024-11-03 05:43:15,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 05:43:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 388 transitions. [2024-11-03 05:43:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 05:43:15,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:15,772 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2024-11-03 05:43:15,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:15,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:15,973 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:15,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash -440380807, now seen corresponding path program 1 times [2024-11-03 05:43:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:15,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626339924] [2024-11-03 05:43:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:15,974 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:15,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:15,977 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:15,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-03 05:43:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:16,042 WARN L253 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-03 05:43:16,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:16,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:16,313 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:16,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626339924] [2024-11-03 05:43:16,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1626339924] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:16,313 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:16,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 4] imperfect sequences [] total 18 [2024-11-03 05:43:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473212177] [2024-11-03 05:43:16,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:16,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 05:43:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 05:43:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:16,314 INFO L87 Difference]: Start difference. First operand 284 states and 388 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:16,659 INFO L93 Difference]: Finished difference Result 331 states and 454 transitions. [2024-11-03 05:43:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-03 05:43:16,659 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-03 05:43:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:16,660 INFO L225 Difference]: With dead ends: 331 [2024-11-03 05:43:16,660 INFO L226 Difference]: Without dead ends: 249 [2024-11-03 05:43:16,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-03 05:43:16,661 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 58 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:16,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 924 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-03 05:43:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 225. [2024-11-03 05:43:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 198 states have (on average 1.3282828282828283) internal successors, (263), 198 states have internal predecessors, (263), 21 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (32), 25 states have call predecessors, (32), 20 states have call successors, (32) [2024-11-03 05:43:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2024-11-03 05:43:16,670 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 48 [2024-11-03 05:43:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:16,670 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2024-11-03 05:43:16,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2024-11-03 05:43:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 05:43:16,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:16,671 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:16,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-03 05:43:16,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:16,873 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:16,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1609971577, now seen corresponding path program 1 times [2024-11-03 05:43:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530907040] [2024-11-03 05:43:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:16,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:16,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:16,875 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:16,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-03 05:43:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:16,930 WARN L253 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 05:43:16,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:17,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:17,329 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530907040] [2024-11-03 05:43:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [530907040] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:17,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:17,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-03 05:43:17,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593504290] [2024-11-03 05:43:17,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:17,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:43:17,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:43:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:17,330 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:17,469 INFO L93 Difference]: Finished difference Result 280 states and 392 transitions. [2024-11-03 05:43:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 05:43:17,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-11-03 05:43:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:17,471 INFO L225 Difference]: With dead ends: 280 [2024-11-03 05:43:17,471 INFO L226 Difference]: Without dead ends: 216 [2024-11-03 05:43:17,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:17,472 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 17 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:17,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 435 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-03 05:43:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2024-11-03 05:43:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 181 states have (on average 1.3425414364640884) internal successors, (243), 184 states have internal predecessors, (243), 23 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (31), 24 states have call predecessors, (31), 21 states have call successors, (31) [2024-11-03 05:43:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 297 transitions. [2024-11-03 05:43:17,481 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 297 transitions. Word has length 49 [2024-11-03 05:43:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:17,481 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 297 transitions. [2024-11-03 05:43:17,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 297 transitions. [2024-11-03 05:43:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 05:43:17,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:17,482 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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 05:43:17,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:17,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:17,683 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:17,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:17,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1552744902, now seen corresponding path program 1 times [2024-11-03 05:43:17,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:17,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319925289] [2024-11-03 05:43:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:17,684 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:17,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:17,687 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:17,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-03 05:43:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:17,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-03 05:43:17,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:18,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:18,254 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:18,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319925289] [2024-11-03 05:43:18,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [319925289] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:18,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:18,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2024-11-03 05:43:18,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344917796] [2024-11-03 05:43:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:18,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:43:18,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:43:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2024-11-03 05:43:18,256 INFO L87 Difference]: Start difference. First operand 210 states and 297 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:18,613 INFO L93 Difference]: Finished difference Result 276 states and 386 transitions. [2024-11-03 05:43:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 05:43:18,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-11-03 05:43:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:18,615 INFO L225 Difference]: With dead ends: 276 [2024-11-03 05:43:18,615 INFO L226 Difference]: Without dead ends: 253 [2024-11-03 05:43:18,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2024-11-03 05:43:18,616 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 32 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:18,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 393 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:43:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-03 05:43:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 246. [2024-11-03 05:43:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 212 states have (on average 1.3349056603773586) internal successors, (283), 215 states have internal predecessors, (283), 28 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (36), 29 states have call predecessors, (36), 26 states have call successors, (36) [2024-11-03 05:43:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 347 transitions. [2024-11-03 05:43:18,625 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 347 transitions. Word has length 50 [2024-11-03 05:43:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:18,625 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 347 transitions. [2024-11-03 05:43:18,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 347 transitions. [2024-11-03 05:43:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 05:43:18,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:18,626 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:18,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:18,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:18,827 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:18,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2084770253, now seen corresponding path program 1 times [2024-11-03 05:43:18,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:18,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744859448] [2024-11-03 05:43:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:18,828 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:18,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:18,830 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:18,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-03 05:43:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:18,891 WARN L253 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 05:43:18,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:19,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:19,185 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744859448] [2024-11-03 05:43:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744859448] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2024-11-03 05:43:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239667264] [2024-11-03 05:43:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:19,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 05:43:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 05:43:19,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:19,186 INFO L87 Difference]: Start difference. First operand 246 states and 347 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:19,221 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2024-11-03 05:43:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 05:43:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-03 05:43:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:19,222 INFO L225 Difference]: With dead ends: 267 [2024-11-03 05:43:19,222 INFO L226 Difference]: Without dead ends: 265 [2024-11-03 05:43:19,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:43:19,223 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 21 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:19,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 531 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-03 05:43:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 250. [2024-11-03 05:43:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 215 states have (on average 1.330232558139535) internal successors, (286), 218 states have internal predecessors, (286), 28 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (36), 29 states have call predecessors, (36), 26 states have call successors, (36) [2024-11-03 05:43:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 350 transitions. [2024-11-03 05:43:19,232 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 350 transitions. Word has length 51 [2024-11-03 05:43:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:19,232 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 350 transitions. [2024-11-03 05:43:19,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 350 transitions. [2024-11-03 05:43:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 05:43:19,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:19,234 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:19,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-03 05:43:19,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:19,436 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:19,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -442621920, now seen corresponding path program 1 times [2024-11-03 05:43:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717763850] [2024-11-03 05:43:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:19,437 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:19,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:19,438 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:19,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-03 05:43:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:19,497 WARN L253 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-03 05:43:19,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:19,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:19,943 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717763850] [2024-11-03 05:43:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [717763850] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:19,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:19,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2024-11-03 05:43:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652295690] [2024-11-03 05:43:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:19,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:43:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:43:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2024-11-03 05:43:19,945 INFO L87 Difference]: Start difference. First operand 250 states and 350 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:20,104 INFO L93 Difference]: Finished difference Result 345 states and 474 transitions. [2024-11-03 05:43:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 05:43:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-03 05:43:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:20,106 INFO L225 Difference]: With dead ends: 345 [2024-11-03 05:43:20,106 INFO L226 Difference]: Without dead ends: 319 [2024-11-03 05:43:20,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-11-03 05:43:20,107 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 26 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:20,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 420 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-03 05:43:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2024-11-03 05:43:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 253 states have (on average 1.308300395256917) internal successors, (331), 257 states have internal predecessors, (331), 33 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (41), 34 states have call predecessors, (41), 31 states have call successors, (41) [2024-11-03 05:43:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 405 transitions. [2024-11-03 05:43:20,117 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 405 transitions. Word has length 52 [2024-11-03 05:43:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:20,117 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 405 transitions. [2024-11-03 05:43:20,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 405 transitions. [2024-11-03 05:43:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 05:43:20,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:20,118 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:20,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:20,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:20,319 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:20,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1332385442, now seen corresponding path program 1 times [2024-11-03 05:43:20,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:20,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529529959] [2024-11-03 05:43:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:20,320 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:20,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:20,321 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:20,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-03 05:43:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:20,377 WARN L253 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-03 05:43:20,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:20,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 05:43:20,671 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529529959] [2024-11-03 05:43:20,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [529529959] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:20,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 18 [2024-11-03 05:43:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044347040] [2024-11-03 05:43:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:20,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 05:43:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 05:43:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:20,672 INFO L87 Difference]: Start difference. First operand 293 states and 405 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:20,689 INFO L93 Difference]: Finished difference Result 302 states and 413 transitions. [2024-11-03 05:43:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-03 05:43:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:20,691 INFO L225 Difference]: With dead ends: 302 [2024-11-03 05:43:20,691 INFO L226 Difference]: Without dead ends: 246 [2024-11-03 05:43:20,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:20,692 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:20,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-03 05:43:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 236. [2024-11-03 05:43:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 201 states have (on average 1.2885572139303483) internal successors, (259), 207 states have internal predecessors, (259), 28 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2024-11-03 05:43:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2024-11-03 05:43:20,700 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 52 [2024-11-03 05:43:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:20,700 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2024-11-03 05:43:20,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2024-11-03 05:43:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 05:43:20,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:20,701 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:20,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:20,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:20,915 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:20,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash -71376074, now seen corresponding path program 1 times [2024-11-03 05:43:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553664368] [2024-11-03 05:43:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:20,916 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:20,919 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:20,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-03 05:43:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:20,997 WARN L253 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-03 05:43:20,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:21,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:22,180 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:22,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553664368] [2024-11-03 05:43:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [553664368] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:22,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2024-11-03 05:43:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363062066] [2024-11-03 05:43:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 05:43:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 05:43:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:43:22,182 INFO L87 Difference]: Start difference. First operand 236 states and 319 transitions. Second operand has 10 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:23,076 INFO L93 Difference]: Finished difference Result 248 states and 333 transitions. [2024-11-03 05:43:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:43:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-03 05:43:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:23,078 INFO L225 Difference]: With dead ends: 248 [2024-11-03 05:43:23,078 INFO L226 Difference]: Without dead ends: 246 [2024-11-03 05:43:23,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-11-03 05:43:23,080 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 17 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:23,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 606 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 05:43:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-03 05:43:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2024-11-03 05:43:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 204 states have (on average 1.2843137254901962) internal successors, (262), 213 states have internal predecessors, (262), 31 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (35), 26 states have call predecessors, (35), 29 states have call successors, (35) [2024-11-03 05:43:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2024-11-03 05:43:23,090 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 54 [2024-11-03 05:43:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:23,091 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2024-11-03 05:43:23,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2024-11-03 05:43:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-03 05:43:23,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:23,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:23,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:23,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:23,292 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:23,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1768875186, now seen corresponding path program 1 times [2024-11-03 05:43:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:23,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146876847] [2024-11-03 05:43:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:23,293 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:23,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:23,294 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:23,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-03 05:43:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:23,362 WARN L253 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-03 05:43:23,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:27,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:29,378 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146876847] [2024-11-03 05:43:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1146876847] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:29,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:29,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2024-11-03 05:43:29,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545155515] [2024-11-03 05:43:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:29,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 05:43:29,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 05:43:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=480, Unknown=2, NotChecked=0, Total=552 [2024-11-03 05:43:29,380 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 10 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:29,601 INFO L93 Difference]: Finished difference Result 249 states and 333 transitions. [2024-11-03 05:43:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:43:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-03 05:43:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:29,603 INFO L225 Difference]: With dead ends: 249 [2024-11-03 05:43:29,603 INFO L226 Difference]: Without dead ends: 247 [2024-11-03 05:43:29,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=84, Invalid=564, Unknown=2, NotChecked=0, Total=650 [2024-11-03 05:43:29,603 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 16 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:29,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 688 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:43:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-03 05:43:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2024-11-03 05:43:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 204 states have (on average 1.2843137254901962) internal successors, (262), 210 states have internal predecessors, (262), 28 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2024-11-03 05:43:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 322 transitions. [2024-11-03 05:43:29,618 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 322 transitions. Word has length 55 [2024-11-03 05:43:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:29,619 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 322 transitions. [2024-11-03 05:43:29,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 322 transitions. [2024-11-03 05:43:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-03 05:43:29,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:29,620 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:29,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-03 05:43:29,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:29,821 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:29,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2067393215, now seen corresponding path program 1 times [2024-11-03 05:43:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243003108] [2024-11-03 05:43:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:29,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:29,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:29,825 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:29,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-03 05:43:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:29,902 WARN L253 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 05:43:29,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:30,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:31,064 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:31,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243003108] [2024-11-03 05:43:31,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [243003108] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:31,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:31,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 28 [2024-11-03 05:43:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258959030] [2024-11-03 05:43:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:31,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 05:43:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 05:43:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-03 05:43:31,066 INFO L87 Difference]: Start difference. First operand 240 states and 322 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:31,744 INFO L93 Difference]: Finished difference Result 267 states and 352 transitions. [2024-11-03 05:43:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 05:43:31,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-11-03 05:43:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:31,745 INFO L225 Difference]: With dead ends: 267 [2024-11-03 05:43:31,746 INFO L226 Difference]: Without dead ends: 232 [2024-11-03 05:43:31,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-11-03 05:43:31,747 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 19 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:31,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 692 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-03 05:43:31,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 208. [2024-11-03 05:43:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 176 states have (on average 1.2897727272727273) internal successors, (227), 180 states have internal predecessors, (227), 24 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-03 05:43:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 279 transitions. [2024-11-03 05:43:31,758 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 279 transitions. Word has length 58 [2024-11-03 05:43:31,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:31,758 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 279 transitions. [2024-11-03 05:43:31,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 279 transitions. [2024-11-03 05:43:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-03 05:43:31,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:31,760 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:31,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-03 05:43:31,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:31,960 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:31,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash 128912926, now seen corresponding path program 1 times [2024-11-03 05:43:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:31,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936571798] [2024-11-03 05:43:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:31,961 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:31,962 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:31,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-03 05:43:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:32,029 WARN L253 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-03 05:43:32,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:32,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:32,417 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:32,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936571798] [2024-11-03 05:43:32,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [936571798] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:32,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:32,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2024-11-03 05:43:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122789629] [2024-11-03 05:43:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:32,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 05:43:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 05:43:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:32,420 INFO L87 Difference]: Start difference. First operand 208 states and 279 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 05:43:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:32,469 INFO L93 Difference]: Finished difference Result 226 states and 297 transitions. [2024-11-03 05:43:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 05:43:32,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 59 [2024-11-03 05:43:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:32,473 INFO L225 Difference]: With dead ends: 226 [2024-11-03 05:43:32,473 INFO L226 Difference]: Without dead ends: 202 [2024-11-03 05:43:32,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:32,474 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 15 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:32,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 518 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-03 05:43:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2024-11-03 05:43:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 155 states have (on average 1.264516129032258) internal successors, (196), 159 states have internal predecessors, (196), 21 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (25), 20 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-03 05:43:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 242 transitions. [2024-11-03 05:43:32,483 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 242 transitions. Word has length 59 [2024-11-03 05:43:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:32,483 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 242 transitions. [2024-11-03 05:43:32,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 05:43:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 242 transitions. [2024-11-03 05:43:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-03 05:43:32,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:32,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:32,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:32,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:32,685 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:32,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 921322142, now seen corresponding path program 1 times [2024-11-03 05:43:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:32,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066565614] [2024-11-03 05:43:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:32,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:32,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:32,688 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:32,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-03 05:43:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:32,783 WARN L253 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-03 05:43:32,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 05:43:33,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:35,133 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066565614] [2024-11-03 05:43:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2066565614] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:35,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [23] total 35 [2024-11-03 05:43:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763046651] [2024-11-03 05:43:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:35,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 05:43:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 05:43:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 05:43:35,134 INFO L87 Difference]: Start difference. First operand 185 states and 242 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-03 05:43:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:36,399 INFO L93 Difference]: Finished difference Result 238 states and 309 transitions. [2024-11-03 05:43:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 05:43:36,399 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 65 [2024-11-03 05:43:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:36,400 INFO L225 Difference]: With dead ends: 238 [2024-11-03 05:43:36,401 INFO L226 Difference]: Without dead ends: 206 [2024-11-03 05:43:36,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2024-11-03 05:43:36,402 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 19 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:36,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 760 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 05:43:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-03 05:43:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-03 05:43:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 173 states have (on average 1.260115606936416) internal successors, (218), 177 states have internal predecessors, (218), 24 states have call successors, (24), 6 states have call predecessors, (24), 8 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-03 05:43:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 270 transitions. [2024-11-03 05:43:36,411 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 270 transitions. Word has length 65 [2024-11-03 05:43:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:36,411 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 270 transitions. [2024-11-03 05:43:36,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-03 05:43:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 270 transitions. [2024-11-03 05:43:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-03 05:43:36,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:36,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:36,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-11-03 05:43:36,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:36,615 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:36,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash -957629534, now seen corresponding path program 1 times [2024-11-03 05:43:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:36,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392810099] [2024-11-03 05:43:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:36,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:36,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:36,617 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:36,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-03 05:43:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:36,694 WARN L253 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-03 05:43:36,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 05:43:37,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:39,316 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392810099] [2024-11-03 05:43:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [392810099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:39,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 36 [2024-11-03 05:43:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871689385] [2024-11-03 05:43:39,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:39,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-03 05:43:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-03 05:43:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2024-11-03 05:43:39,318 INFO L87 Difference]: Start difference. First operand 206 states and 270 transitions. Second operand has 36 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-03 05:43:46,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:43:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:51,930 INFO L93 Difference]: Finished difference Result 335 states and 435 transitions. [2024-11-03 05:43:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-03 05:43:51,931 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 66 [2024-11-03 05:43:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:51,933 INFO L225 Difference]: With dead ends: 335 [2024-11-03 05:43:51,933 INFO L226 Difference]: Without dead ends: 295 [2024-11-03 05:43:51,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=302, Invalid=2668, Unknown=0, NotChecked=0, Total=2970 [2024-11-03 05:43:51,935 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 81 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:51,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1570 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2127 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2024-11-03 05:43:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-03 05:43:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 189. [2024-11-03 05:43:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 160 states have (on average 1.25) internal successors, (200), 164 states have internal predecessors, (200), 20 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2024-11-03 05:43:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2024-11-03 05:43:51,950 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 244 transitions. Word has length 66 [2024-11-03 05:43:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:51,950 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 244 transitions. [2024-11-03 05:43:51,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-03 05:43:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 244 transitions. [2024-11-03 05:43:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-03 05:43:51,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:51,951 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:51,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-03 05:43:52,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:52,152 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:52,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -197925662, now seen corresponding path program 1 times [2024-11-03 05:43:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:52,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202203496] [2024-11-03 05:43:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:52,153 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:52,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:52,154 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:52,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-03 05:43:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:52,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-03 05:43:52,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:52,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:53,093 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202203496] [2024-11-03 05:43:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1202203496] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:53,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:53,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2024-11-03 05:43:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915923407] [2024-11-03 05:43:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:53,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 05:43:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 05:43:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:53,094 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:53,151 INFO L93 Difference]: Finished difference Result 237 states and 301 transitions. [2024-11-03 05:43:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:53,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-11-03 05:43:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:53,153 INFO L225 Difference]: With dead ends: 237 [2024-11-03 05:43:53,153 INFO L226 Difference]: Without dead ends: 212 [2024-11-03 05:43:53,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:53,154 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 39 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:53,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 239 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-03 05:43:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-03 05:43:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 185 states have internal predecessors, (225), 22 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-03 05:43:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 273 transitions. [2024-11-03 05:43:53,171 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 273 transitions. Word has length 67 [2024-11-03 05:43:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:53,171 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 273 transitions. [2024-11-03 05:43:53,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 273 transitions. [2024-11-03 05:43:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 05:43:53,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:53,176 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:53,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-03 05:43:53,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:53,377 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:53,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1646253202, now seen corresponding path program 1 times [2024-11-03 05:43:53,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:53,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912601831] [2024-11-03 05:43:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:53,378 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:53,379 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:53,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-03 05:43:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:53,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-03 05:43:53,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:53,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:54,211 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912601831] [2024-11-03 05:43:54,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1912601831] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:54,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:54,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2024-11-03 05:43:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862845943] [2024-11-03 05:43:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:54,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 05:43:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 05:43:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:54,213 INFO L87 Difference]: Start difference. First operand 212 states and 273 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:54,283 INFO L93 Difference]: Finished difference Result 310 states and 391 transitions. [2024-11-03 05:43:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:54,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-11-03 05:43:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:54,285 INFO L225 Difference]: With dead ends: 310 [2024-11-03 05:43:54,285 INFO L226 Difference]: Without dead ends: 222 [2024-11-03 05:43:54,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:54,286 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 30 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:54,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 322 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-03 05:43:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 202. [2024-11-03 05:43:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 177 states have internal predecessors, (209), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2024-11-03 05:43:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 253 transitions. [2024-11-03 05:43:54,306 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 253 transitions. Word has length 68 [2024-11-03 05:43:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:54,306 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 253 transitions. [2024-11-03 05:43:54,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 253 transitions. [2024-11-03 05:43:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 05:43:54,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:54,308 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:54,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:54,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:54,508 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:54,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1718639760, now seen corresponding path program 1 times [2024-11-03 05:43:54,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:54,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207686456] [2024-11-03 05:43:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:54,509 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:54,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:54,510 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:54,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-03 05:43:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:54,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-03 05:43:54,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:55,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:55,376 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207686456] [2024-11-03 05:43:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1207686456] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:55,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:55,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-03 05:43:55,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259124137] [2024-11-03 05:43:55,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:55,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 05:43:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 05:43:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-03 05:43:55,377 INFO L87 Difference]: Start difference. First operand 202 states and 253 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:55,434 INFO L93 Difference]: Finished difference Result 226 states and 277 transitions. [2024-11-03 05:43:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-11-03 05:43:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:55,436 INFO L225 Difference]: With dead ends: 226 [2024-11-03 05:43:55,436 INFO L226 Difference]: Without dead ends: 204 [2024-11-03 05:43:55,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-03 05:43:55,437 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 18 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:55,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 356 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-03 05:43:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2024-11-03 05:43:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 175 states have (on average 1.1828571428571428) internal successors, (207), 177 states have internal predecessors, (207), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2024-11-03 05:43:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 251 transitions. [2024-11-03 05:43:55,455 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 251 transitions. Word has length 68 [2024-11-03 05:43:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:55,456 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 251 transitions. [2024-11-03 05:43:55,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 251 transitions. [2024-11-03 05:43:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-03 05:43:55,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:55,457 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:55,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-03 05:43:55,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:55,659 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:55,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1500339936, now seen corresponding path program 1 times [2024-11-03 05:43:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010997955] [2024-11-03 05:43:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:55,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:55,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:55,662 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:55,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-03 05:43:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:55,745 WARN L253 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-03 05:43:55,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:56,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:57,391 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010997955] [2024-11-03 05:43:57,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2010997955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:57,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2024-11-03 05:43:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234759470] [2024-11-03 05:43:57,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:57,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 05:43:57,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 05:43:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-11-03 05:43:57,392 INFO L87 Difference]: Start difference. First operand 202 states and 251 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 18 states have internal predecessors, (80), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 05:43:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:58,900 INFO L93 Difference]: Finished difference Result 328 states and 401 transitions. [2024-11-03 05:43:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 05:43:58,900 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 18 states have internal predecessors, (80), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 69 [2024-11-03 05:43:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:58,901 INFO L225 Difference]: With dead ends: 328 [2024-11-03 05:43:58,901 INFO L226 Difference]: Without dead ends: 240 [2024-11-03 05:43:58,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2024-11-03 05:43:58,902 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 95 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:58,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 974 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-03 05:43:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-03 05:43:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2024-11-03 05:43:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 180 states have (on average 1.1666666666666667) internal successors, (210), 182 states have internal predecessors, (210), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2024-11-03 05:43:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 254 transitions. [2024-11-03 05:43:58,947 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 254 transitions. Word has length 69 [2024-11-03 05:43:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:58,947 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 254 transitions. [2024-11-03 05:43:58,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 18 states have internal predecessors, (80), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 05:43:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 254 transitions. [2024-11-03 05:43:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-03 05:43:58,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:58,950 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:58,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:59,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,151 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:59,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:59,151 INFO L85 PathProgramCache]: Analyzing trace with hash -992301291, now seen corresponding path program 1 times [2024-11-03 05:43:59,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:59,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587418619] [2024-11-03 05:43:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:59,153 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-03 05:43:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:59,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 05:43:59,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:59,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:59,536 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:59,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587418619] [2024-11-03 05:43:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1587418619] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:59,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:59,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-03 05:43:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201238204] [2024-11-03 05:43:59,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:59,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 05:43:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 05:43:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-03 05:43:59,537 INFO L87 Difference]: Start difference. First operand 207 states and 254 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:59,647 INFO L93 Difference]: Finished difference Result 407 states and 499 transitions. [2024-11-03 05:43:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 05:43:59,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-03 05:43:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:59,649 INFO L225 Difference]: With dead ends: 407 [2024-11-03 05:43:59,649 INFO L226 Difference]: Without dead ends: 213 [2024-11-03 05:43:59,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-03 05:43:59,651 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 6 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:59,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 287 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-03 05:43:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2024-11-03 05:43:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 183 states have (on average 1.1639344262295082) internal successors, (213), 186 states have internal predecessors, (213), 20 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (28), 19 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-03 05:43:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 261 transitions. [2024-11-03 05:43:59,666 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 261 transitions. Word has length 69 [2024-11-03 05:43:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:59,666 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 261 transitions. [2024-11-03 05:43:59,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:59,666 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 261 transitions. [2024-11-03 05:43:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 05:43:59,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:59,667 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:59,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-03 05:43:59,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,868 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:59,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash 641514815, now seen corresponding path program 1 times [2024-11-03 05:43:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:59,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628818366] [2024-11-03 05:43:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:59,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:59,869 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:59,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-03 05:43:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:59,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-03 05:43:59,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:44:00,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:44:00,347 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628818366] [2024-11-03 05:44:00,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1628818366] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:44:00,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:44:00,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-03 05:44:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980212460] [2024-11-03 05:44:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:44:00,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:44:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:44:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-03 05:44:00,349 INFO L87 Difference]: Start difference. First operand 211 states and 261 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:44:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:00,588 INFO L93 Difference]: Finished difference Result 434 states and 538 transitions. [2024-11-03 05:44:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:44:00,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2024-11-03 05:44:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:00,590 INFO L225 Difference]: With dead ends: 434 [2024-11-03 05:44:00,590 INFO L226 Difference]: Without dead ends: 220 [2024-11-03 05:44:00,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-03 05:44:00,591 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:00,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 462 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:44:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-03 05:44:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2024-11-03 05:44:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 186 states have (on average 1.1666666666666667) internal successors, (217), 188 states have internal predecessors, (217), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-03 05:44:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 260 transitions. [2024-11-03 05:44:00,610 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 260 transitions. Word has length 70 [2024-11-03 05:44:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:00,610 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 260 transitions. [2024-11-03 05:44:00,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:44:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 260 transitions. [2024-11-03 05:44:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 05:44:00,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:00,611 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:00,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-03 05:44:00,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:00,813 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:00,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash 438339121, now seen corresponding path program 1 times [2024-11-03 05:44:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:00,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486174333] [2024-11-03 05:44:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:00,814 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:00,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:00,815 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:00,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-03 05:44:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:00,903 WARN L253 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-03 05:44:00,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:02,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 05:44:09,252 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486174333] [2024-11-03 05:44:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1486174333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:09,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:09,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15] total 36 [2024-11-03 05:44:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840627366] [2024-11-03 05:44:09,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:09,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-03 05:44:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-03 05:44:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1151, Unknown=1, NotChecked=0, Total=1260 [2024-11-03 05:44:09,254 INFO L87 Difference]: Start difference. First operand 213 states and 260 transitions. Second operand has 36 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 32 states have internal predecessors, (81), 8 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-03 05:44:13,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 05:44:19,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 05:44:23,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 05:44:27,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 05:44:34,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]