/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/byte_add_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 05:40:40,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 05:40:40,688 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 05:40:40,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 05:40:40,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 05:40:40,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 05:40:40,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 05:40:40,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 05:40:40,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 05:40:40,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 05:40:40,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 05:40:40,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 05:40:40,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 05:40:40,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 05:40:40,721 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 05:40:40,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 05:40:40,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 05:40:40,721 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 05:40:40,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 05:40:40,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 05:40:40,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 05:40:40,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 05:40:40,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 05:40:40,727 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 05:40:40,727 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 05:40:40,727 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 05:40:40,727 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 05:40:40,727 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 05:40:40,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 05:40:40,728 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 05:40:40,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 05:40:40,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 05:40:40,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 05:40:40,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 05:40:40,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:40:40,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 05:40:40,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 05:40:40,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 05:40:40,730 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 05:40:40,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 05:40:40,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 05:40:40,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 05:40:40,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 05:40:40,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 05:40:40,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:40,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 05:40:40,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 05:40:40,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 05:40:40,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 05:40:40,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 05:40:40,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2024-11-03 05:40:42,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 05:40:42,631 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 05:40:42,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2024-11-03 05:40:42,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c6b2843/6aee2abf1764470dabe5807f406a1be3/FLAG6198409bc [2024-11-03 05:40:42,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c6b2843/6aee2abf1764470dabe5807f406a1be3 [2024-11-03 05:40:42,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 05:40:42,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 05:40:42,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 05:40:42,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 05:40:42,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 05:40:42,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:42,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d35f57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42, skipping insertion in model container [2024-11-03 05:40:42,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:42,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 05:40:42,860 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/byte_add_1-1.i[1168,1181] [2024-11-03 05:40:42,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:40:42,909 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 05:40:42,922 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/byte_add_1-1.i[1168,1181] [2024-11-03 05:40:42,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:40:42,974 INFO L204 MainTranslator]: Completed translation [2024-11-03 05:40:42,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42 WrapperNode [2024-11-03 05:40:42,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 05:40:42,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 05:40:42,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 05:40:42,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 05:40:42,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,031 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2024-11-03 05:40:43,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 05:40:43,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 05:40:43,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 05:40:43,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 05:40:43,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,060 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 05:40:43,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 05:40:43,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 05:40:43,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 05:40:43,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 05:40:43,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (1/1) ... [2024-11-03 05:40:43,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:40:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 05:40:43,117 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 05:40:43,123 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 05:40:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 05:40:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 05:40:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 05:40:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 05:40:43,231 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 05:40:43,235 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 05:40:43,550 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-03 05:40:43,550 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 05:40:43,566 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 05:40:43,566 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 05:40:43,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:40:43 BoogieIcfgContainer [2024-11-03 05:40:43,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 05:40:43,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 05:40:43,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 05:40:43,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 05:40:43,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:40:42" (1/3) ... [2024-11-03 05:40:43,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fa11c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:40:43, skipping insertion in model container [2024-11-03 05:40:43,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:42" (2/3) ... [2024-11-03 05:40:43,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fa11c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:40:43, skipping insertion in model container [2024-11-03 05:40:43,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:40:43" (3/3) ... [2024-11-03 05:40:43,576 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2024-11-03 05:40:43,592 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 05:40:43,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 05:40:43,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 05:40:43,653 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;@12da257c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 05:40:43,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 05:40:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 05:40:43,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:43,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:43,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:43,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:43,667 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2024-11-03 05:40:43,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:43,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79886501] [2024-11-03 05:40:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:43,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:43,678 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 05:40:43,679 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 05:40:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:43,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 05:40:43,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:43,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:43,802 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79886501] [2024-11-03 05:40:43,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [79886501] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:43,803 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:43,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 05:40:43,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093632242] [2024-11-03 05:40:43,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:43,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 05:40:43,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 05:40:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 05:40:43,826 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:43,840 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2024-11-03 05:40:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 05:40:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 05:40:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:43,848 INFO L225 Difference]: With dead ends: 57 [2024-11-03 05:40:43,848 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 05:40:43,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 05:40:43,854 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:43,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:40:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 05:40:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 05:40:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2024-11-03 05:40:43,885 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2024-11-03 05:40:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:43,886 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2024-11-03 05:40:43,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2024-11-03 05:40:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 05:40:43,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:43,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:43,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 05:40:44,090 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 05:40:44,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:44,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2024-11-03 05:40:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:44,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114356194] [2024-11-03 05:40:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:44,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:44,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:44,094 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 05:40:44,096 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 05:40:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:44,148 WARN L253 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 05:40:44,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:44,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:44,356 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114356194] [2024-11-03 05:40:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114356194] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:44,356 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:44,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2024-11-03 05:40:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646827898] [2024-11-03 05:40:44,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:44,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 05:40:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 05:40:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-03 05:40:44,360 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:44,765 INFO L93 Difference]: Finished difference Result 141 states and 255 transitions. [2024-11-03 05:40:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 05:40:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 05:40:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:44,769 INFO L225 Difference]: With dead ends: 141 [2024-11-03 05:40:44,769 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 05:40:44,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2024-11-03 05:40:44,771 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 232 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:44,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 148 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:40:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 05:40:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-11-03 05:40:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.67) internal successors, (167), 100 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 167 transitions. [2024-11-03 05:40:44,794 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 167 transitions. Word has length 12 [2024-11-03 05:40:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:44,794 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 167 transitions. [2024-11-03 05:40:44,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:44,796 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 167 transitions. [2024-11-03 05:40:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 05:40:44,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:44,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:44,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 05:40:44,998 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 05:40:44,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:44,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash 583572890, now seen corresponding path program 1 times [2024-11-03 05:40:44,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:44,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149265677] [2024-11-03 05:40:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:45,000 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:45,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:45,003 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 05:40:45,004 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 05:40:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:45,056 WARN L253 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-03 05:40:45,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:45,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:45,234 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149265677] [2024-11-03 05:40:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [149265677] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:45,234 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:45,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2024-11-03 05:40:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551493314] [2024-11-03 05:40:45,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:45,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 05:40:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 05:40:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-03 05:40:45,241 INFO L87 Difference]: Start difference. First operand 101 states and 167 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:45,895 INFO L93 Difference]: Finished difference Result 274 states and 490 transitions. [2024-11-03 05:40:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 05:40:45,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-03 05:40:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:45,898 INFO L225 Difference]: With dead ends: 274 [2024-11-03 05:40:45,898 INFO L226 Difference]: Without dead ends: 229 [2024-11-03 05:40:45,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:40:45,903 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 1115 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:45,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 178 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 05:40:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-03 05:40:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 190. [2024-11-03 05:40:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.656084656084656) internal successors, (313), 189 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 313 transitions. [2024-11-03 05:40:45,939 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 313 transitions. Word has length 14 [2024-11-03 05:40:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:45,939 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 313 transitions. [2024-11-03 05:40:45,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 313 transitions. [2024-11-03 05:40:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 05:40:45,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:45,941 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:45,944 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 05:40:46,142 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 05:40:46,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:46,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash -842586557, now seen corresponding path program 1 times [2024-11-03 05:40:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:46,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824870157] [2024-11-03 05:40:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:46,144 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:46,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:46,146 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 05:40:46,148 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 05:40:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:46,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 05:40:46,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:47,134 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~b~0#1| (_ BitVec 32))) (and (= ((_ extract 7 0) (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv8 32))) |c_ULTIMATE.start_mp_add_~b1~0#1|) (= ((_ extract 7 0) |ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_mp_add_~b0~0#1|))) is different from true [2024-11-03 05:40:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:47,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:47,501 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:47,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824870157] [2024-11-03 05:40:47,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [824870157] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:47,501 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:47,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 3] imperfect sequences [] total 8 [2024-11-03 05:40:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901162091] [2024-11-03 05:40:47,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:47,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 05:40:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 05:40:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2024-11-03 05:40:47,503 INFO L87 Difference]: Start difference. First operand 190 states and 313 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:48,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:50,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:52,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:53,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:55,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:56,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:57,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:40:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:57,887 INFO L93 Difference]: Finished difference Result 536 states and 883 transitions. [2024-11-03 05:40:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 05:40:57,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-03 05:40:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:57,890 INFO L225 Difference]: With dead ends: 536 [2024-11-03 05:40:57,891 INFO L226 Difference]: Without dead ends: 371 [2024-11-03 05:40:57,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=99, Unknown=1, NotChecked=22, Total=182 [2024-11-03 05:40:57,893 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 178 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 46 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:57,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 112 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 387 Invalid, 8 Unknown, 250 Unchecked, 9.8s Time] [2024-11-03 05:40:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-03 05:40:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 325. [2024-11-03 05:40:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.5864197530864197) internal successors, (514), 324 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 514 transitions. [2024-11-03 05:40:57,914 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 514 transitions. Word has length 26 [2024-11-03 05:40:57,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:57,915 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 514 transitions. [2024-11-03 05:40:57,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 514 transitions. [2024-11-03 05:40:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 05:40:57,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:57,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:57,922 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 05:40:58,119 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 05:40:58,120 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:58,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1706596609, now seen corresponding path program 1 times [2024-11-03 05:40:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819812225] [2024-11-03 05:40:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:58,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:58,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:58,123 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 05:40:58,124 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 05:40:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:58,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-03 05:40:58,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:58,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:58,382 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:58,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819812225] [2024-11-03 05:40:58,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [819812225] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:58,382 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:58,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2024-11-03 05:40:58,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930360471] [2024-11-03 05:40:58,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:58,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 05:40:58,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:58,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 05:40:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-03 05:40:58,384 INFO L87 Difference]: Start difference. First operand 325 states and 514 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:58,889 INFO L93 Difference]: Finished difference Result 1078 states and 1745 transitions. [2024-11-03 05:40:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 05:40:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-03 05:40:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:58,893 INFO L225 Difference]: With dead ends: 1078 [2024-11-03 05:40:58,893 INFO L226 Difference]: Without dead ends: 798 [2024-11-03 05:40:58,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2024-11-03 05:40:58,896 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 208 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:58,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 244 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:40:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-03 05:40:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 385. [2024-11-03 05:40:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.4947916666666667) internal successors, (574), 384 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 574 transitions. [2024-11-03 05:40:58,920 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 574 transitions. Word has length 26 [2024-11-03 05:40:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:58,920 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 574 transitions. [2024-11-03 05:40:58,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 574 transitions. [2024-11-03 05:40:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 05:40:58,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:58,922 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:58,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 05:40:59,123 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 05:40:59,124 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:59,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash 252037358, now seen corresponding path program 1 times [2024-11-03 05:40:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785213737] [2024-11-03 05:40:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:59,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:59,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:59,126 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 05:40:59,128 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 05:40:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:59,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 05:40:59,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-03 05:40:59,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-03 05:40:59,205 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785213737] [2024-11-03 05:40:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [785213737] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:59,206 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:59,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 05:40:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321711733] [2024-11-03 05:40:59,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:59,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 05:40:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:59,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 05:40:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 05:40:59,207 INFO L87 Difference]: Start difference. First operand 385 states and 574 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:59,224 INFO L93 Difference]: Finished difference Result 550 states and 849 transitions. [2024-11-03 05:40:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 05:40:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-03 05:40:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:59,226 INFO L225 Difference]: With dead ends: 550 [2024-11-03 05:40:59,227 INFO L226 Difference]: Without dead ends: 298 [2024-11-03 05:40:59,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 05:40:59,230 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 108 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:59,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 60 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:40:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-03 05:40:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-03 05:40:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4882154882154883) internal successors, (442), 297 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2024-11-03 05:40:59,246 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 28 [2024-11-03 05:40:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:59,246 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2024-11-03 05:40:59,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2024-11-03 05:40:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-03 05:40:59,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:59,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:59,255 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 05:40:59,452 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 05:40:59,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:59,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash 890037965, now seen corresponding path program 1 times [2024-11-03 05:40:59,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:59,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519027535] [2024-11-03 05:40:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:59,454 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:59,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:59,455 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 05:40:59,456 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 05:40:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:59,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 05:40:59,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:40:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:59,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:40:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:40:59,551 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:40:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519027535] [2024-11-03 05:40:59,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519027535] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:40:59,551 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:40:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 05:40:59,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595768280] [2024-11-03 05:40:59,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:40:59,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 05:40:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:40:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 05:40:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 05:40:59,553 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:40:59,644 INFO L93 Difference]: Finished difference Result 589 states and 924 transitions. [2024-11-03 05:40:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 05:40:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-03 05:40:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:40:59,646 INFO L225 Difference]: With dead ends: 589 [2024-11-03 05:40:59,646 INFO L226 Difference]: Without dead ends: 378 [2024-11-03 05:40:59,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 05:40:59,647 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:40:59,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:40:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-03 05:40:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 359. [2024-11-03 05:40:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4720670391061452) internal successors, (527), 358 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 527 transitions. [2024-11-03 05:40:59,664 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 527 transitions. Word has length 30 [2024-11-03 05:40:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:40:59,665 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 527 transitions. [2024-11-03 05:40:59,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:40:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 527 transitions. [2024-11-03 05:40:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-03 05:40:59,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:40:59,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:40:59,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-03 05:40:59,885 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 05:40:59,885 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:40:59,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:40:59,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1570096335, now seen corresponding path program 1 times [2024-11-03 05:40:59,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:40:59,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722276567] [2024-11-03 05:40:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:40:59,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:40:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:40:59,890 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 05:40:59,891 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 05:40:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:40:59,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-03 05:40:59,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:00,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:00,275 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722276567] [2024-11-03 05:41:00,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1722276567] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:41:00,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:41:00,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2024-11-03 05:41:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707663612] [2024-11-03 05:41:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:41:00,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 05:41:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 05:41:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-03 05:41:00,278 INFO L87 Difference]: Start difference. First operand 359 states and 527 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:00,301 INFO L93 Difference]: Finished difference Result 461 states and 682 transitions. [2024-11-03 05:41:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 05:41:00,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-03 05:41:00,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:00,303 INFO L225 Difference]: With dead ends: 461 [2024-11-03 05:41:00,303 INFO L226 Difference]: Without dead ends: 445 [2024-11-03 05:41:00,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-03 05:41:00,305 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:00,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 112 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:41:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-03 05:41:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 433. [2024-11-03 05:41:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4884259259259258) internal successors, (643), 432 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 643 transitions. [2024-11-03 05:41:00,323 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 643 transitions. Word has length 30 [2024-11-03 05:41:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:00,323 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 643 transitions. [2024-11-03 05:41:00,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 643 transitions. [2024-11-03 05:41:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 05:41:00,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:00,325 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 05:41:00,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-03 05:41:00,526 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 05:41:00,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:00,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1462270912, now seen corresponding path program 1 times [2024-11-03 05:41:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616743529] [2024-11-03 05:41:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:00,528 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:00,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:00,530 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 05:41:00,531 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 05:41:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:00,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 05:41:00,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:00,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:00,951 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616743529] [2024-11-03 05:41:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1616743529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:00,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 14 [2024-11-03 05:41:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657703745] [2024-11-03 05:41:00,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:00,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 05:41:00,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 05:41:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-03 05:41:00,953 INFO L87 Difference]: Start difference. First operand 433 states and 643 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:01,910 INFO L93 Difference]: Finished difference Result 985 states and 1523 transitions. [2024-11-03 05:41:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 05:41:01,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-03 05:41:01,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:01,914 INFO L225 Difference]: With dead ends: 985 [2024-11-03 05:41:01,914 INFO L226 Difference]: Without dead ends: 629 [2024-11-03 05:41:01,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 05:41:01,918 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 487 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:01,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 85 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 05:41:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-03 05:41:01,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 587. [2024-11-03 05:41:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.3890784982935154) internal successors, (814), 586 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 814 transitions. [2024-11-03 05:41:01,943 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 814 transitions. Word has length 39 [2024-11-03 05:41:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:01,944 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 814 transitions. [2024-11-03 05:41:01,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 814 transitions. [2024-11-03 05:41:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 05:41:01,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:01,946 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:41:01,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-03 05:41:02,148 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 05:41:02,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:02,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1738604796, now seen corresponding path program 1 times [2024-11-03 05:41:02,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:02,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154885616] [2024-11-03 05:41:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:02,149 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:02,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:02,150 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 05:41:02,151 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 05:41:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:02,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-03 05:41:02,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:02,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:02,840 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:02,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154885616] [2024-11-03 05:41:02,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [154885616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:02,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:02,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2024-11-03 05:41:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388184771] [2024-11-03 05:41:02,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:02,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 05:41:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 05:41:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-03 05:41:02,842 INFO L87 Difference]: Start difference. First operand 587 states and 814 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:03,738 INFO L93 Difference]: Finished difference Result 1158 states and 1634 transitions. [2024-11-03 05:41:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 05:41:03,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-03 05:41:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:03,741 INFO L225 Difference]: With dead ends: 1158 [2024-11-03 05:41:03,741 INFO L226 Difference]: Without dead ends: 685 [2024-11-03 05:41:03,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 05:41:03,743 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 427 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:03,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 76 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:41:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-03 05:41:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 565. [2024-11-03 05:41:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.349290780141844) internal successors, (761), 564 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 761 transitions. [2024-11-03 05:41:03,765 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 761 transitions. Word has length 39 [2024-11-03 05:41:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:03,765 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 761 transitions. [2024-11-03 05:41:03,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 761 transitions. [2024-11-03 05:41:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-03 05:41:03,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:03,767 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-03 05:41:03,770 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 05:41:03,968 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 05:41:03,969 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:03,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -339742545, now seen corresponding path program 1 times [2024-11-03 05:41:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319966165] [2024-11-03 05:41:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:03,970 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:03,971 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 05:41:03,972 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 05:41:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:04,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 05:41:04,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 05:41:04,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 05:41:04,373 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319966165] [2024-11-03 05:41:04,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [319966165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:04,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:04,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4] total 13 [2024-11-03 05:41:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90350945] [2024-11-03 05:41:04,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:04,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 05:41:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 05:41:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-03 05:41:04,375 INFO L87 Difference]: Start difference. First operand 565 states and 761 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:05,219 INFO L93 Difference]: Finished difference Result 1397 states and 1894 transitions. [2024-11-03 05:41:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-03 05:41:05,220 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-03 05:41:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:05,223 INFO L225 Difference]: With dead ends: 1397 [2024-11-03 05:41:05,224 INFO L226 Difference]: Without dead ends: 942 [2024-11-03 05:41:05,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=841, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 05:41:05,228 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 357 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:05,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 253 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 05:41:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-03 05:41:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 734. [2024-11-03 05:41:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.2974079126875853) internal successors, (951), 733 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 951 transitions. [2024-11-03 05:41:05,270 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 951 transitions. Word has length 56 [2024-11-03 05:41:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:05,271 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 951 transitions. [2024-11-03 05:41:05,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 951 transitions. [2024-11-03 05:41:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-03 05:41:05,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:05,272 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:41:05,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-03 05:41:05,474 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 05:41:05,475 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:05,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash -199193935, now seen corresponding path program 1 times [2024-11-03 05:41:05,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:05,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699683634] [2024-11-03 05:41:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:05,476 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:05,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:05,477 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 05:41:05,478 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 05:41:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:05,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-03 05:41:05,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:05,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:06,003 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:06,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699683634] [2024-11-03 05:41:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [699683634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:06,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:06,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2024-11-03 05:41:06,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825104585] [2024-11-03 05:41:06,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:06,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 05:41:06,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:06,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 05:41:06,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-03 05:41:06,004 INFO L87 Difference]: Start difference. First operand 734 states and 951 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:07,156 INFO L93 Difference]: Finished difference Result 1707 states and 2230 transitions. [2024-11-03 05:41:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-03 05:41:07,156 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-03 05:41:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:07,160 INFO L225 Difference]: With dead ends: 1707 [2024-11-03 05:41:07,160 INFO L226 Difference]: Without dead ends: 1077 [2024-11-03 05:41:07,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2024-11-03 05:41:07,162 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 431 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:07,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 106 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 05:41:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-11-03 05:41:07,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1041. [2024-11-03 05:41:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 1.2153846153846153) internal successors, (1264), 1040 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1264 transitions. [2024-11-03 05:41:07,215 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1264 transitions. Word has length 56 [2024-11-03 05:41:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:07,215 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1264 transitions. [2024-11-03 05:41:07,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1264 transitions. [2024-11-03 05:41:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 05:41:07,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:07,217 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-03 05:41:07,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-03 05:41:07,418 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 05:41:07,418 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:07,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1493994486, now seen corresponding path program 1 times [2024-11-03 05:41:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615957358] [2024-11-03 05:41:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:07,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:07,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:07,420 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 05:41:07,421 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 05:41:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:07,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-03 05:41:07,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 05:41:07,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 05:41:07,948 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615957358] [2024-11-03 05:41:07,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1615957358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:07,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2024-11-03 05:41:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345769197] [2024-11-03 05:41:07,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:07,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 05:41:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:07,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 05:41:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-03 05:41:07,950 INFO L87 Difference]: Start difference. First operand 1041 states and 1264 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:11,092 INFO L93 Difference]: Finished difference Result 1963 states and 2389 transitions. [2024-11-03 05:41:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-03 05:41:11,093 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-03 05:41:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:11,099 INFO L225 Difference]: With dead ends: 1963 [2024-11-03 05:41:11,099 INFO L226 Difference]: Without dead ends: 1328 [2024-11-03 05:41:11,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1044, Invalid=5928, Unknown=0, NotChecked=0, Total=6972 [2024-11-03 05:41:11,102 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 1009 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:11,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 905 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 05:41:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2024-11-03 05:41:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 950. [2024-11-03 05:41:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 1.2128556375131718) internal successors, (1151), 949 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1151 transitions. [2024-11-03 05:41:11,155 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1151 transitions. Word has length 70 [2024-11-03 05:41:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:11,155 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1151 transitions. [2024-11-03 05:41:11,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1151 transitions. [2024-11-03 05:41:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 05:41:11,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:11,158 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-03 05:41:11,161 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 05:41:11,358 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 05:41:11,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:11,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash 605183798, now seen corresponding path program 2 times [2024-11-03 05:41:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:11,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111691415] [2024-11-03 05:41:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:11,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:11,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:11,360 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 05:41:11,362 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 05:41:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:11,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-03 05:41:11,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:14,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:41:16,205 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:16,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111691415] [2024-11-03 05:41:16,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1111691415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:16,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:16,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 49 [2024-11-03 05:41:16,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573494108] [2024-11-03 05:41:16,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:16,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-03 05:41:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:16,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-03 05:41:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2193, Unknown=0, NotChecked=0, Total=2352 [2024-11-03 05:41:16,208 INFO L87 Difference]: Start difference. First operand 950 states and 1151 transitions. Second operand has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:41:36,996 INFO L93 Difference]: Finished difference Result 2412 states and 2983 transitions. [2024-11-03 05:41:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-03 05:41:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-03 05:41:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:41:37,002 INFO L225 Difference]: With dead ends: 2412 [2024-11-03 05:41:37,002 INFO L226 Difference]: Without dead ends: 2141 [2024-11-03 05:41:37,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5427 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2390, Invalid=19662, Unknown=0, NotChecked=0, Total=22052 [2024-11-03 05:41:37,007 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 1785 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 8921 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 9016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 8921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:41:37,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 4305 Invalid, 9016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 8921 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-03 05:41:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2024-11-03 05:41:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 1412. [2024-11-03 05:41:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 1.2289156626506024) internal successors, (1734), 1411 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1734 transitions. [2024-11-03 05:41:37,134 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1734 transitions. Word has length 70 [2024-11-03 05:41:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:41:37,136 INFO L471 AbstractCegarLoop]: Abstraction has 1412 states and 1734 transitions. [2024-11-03 05:41:37,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1734 transitions. [2024-11-03 05:41:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 05:41:37,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:41:37,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2024-11-03 05:41:37,141 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 05:41:37,338 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 05:41:37,339 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:41:37,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:41:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1375919644, now seen corresponding path program 1 times [2024-11-03 05:41:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:41:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290364467] [2024-11-03 05:41:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:41:37,341 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:41:37,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:41:37,343 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 05:41:37,344 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 05:41:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:41:37,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-03 05:41:37,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:41:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 05:41:38,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:41:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 05:41:38,419 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:41:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290364467] [2024-11-03 05:41:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1290364467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:41:38,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:41:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 6] total 24 [2024-11-03 05:41:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845262654] [2024-11-03 05:41:38,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:41:38,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 05:41:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:41:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 05:41:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:41:38,421 INFO L87 Difference]: Start difference. First operand 1412 states and 1734 transitions. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:41:46,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:41:49,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:41:51,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:41:52,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:41:54,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:41:59,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:00,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:07,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:08,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:09,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:10,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 05:42:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:42:10,603 INFO L93 Difference]: Finished difference Result 2924 states and 3611 transitions. [2024-11-03 05:42:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-03 05:42:10,605 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-03 05:42:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:42:10,610 INFO L225 Difference]: With dead ends: 2924 [2024-11-03 05:42:10,610 INFO L226 Difference]: Without dead ends: 1856 [2024-11-03 05:42:10,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=935, Invalid=6367, Unknown=8, NotChecked=0, Total=7310 [2024-11-03 05:42:10,615 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 848 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 56 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:42:10,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 628 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2921 Invalid, 12 Unknown, 0 Unchecked, 18.1s Time] [2024-11-03 05:42:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2024-11-03 05:42:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1461. [2024-11-03 05:42:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 1.2095890410958905) internal successors, (1766), 1460 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:42:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1766 transitions. [2024-11-03 05:42:10,760 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1766 transitions. Word has length 74 [2024-11-03 05:42:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:42:10,761 INFO L471 AbstractCegarLoop]: Abstraction has 1461 states and 1766 transitions. [2024-11-03 05:42:10,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:42:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1766 transitions. [2024-11-03 05:42:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 05:42:10,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:42:10,766 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-03 05:42:10,769 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 05:42:10,967 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 05:42:10,968 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:42:10,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:42:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1235371034, now seen corresponding path program 2 times [2024-11-03 05:42:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:42:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824490913] [2024-11-03 05:42:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:42:10,969 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:42:10,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:42:10,970 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 05:42:10,971 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 05:42:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:42:11,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-03 05:42:11,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:42:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:42:14,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:42:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:42:16,534 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:42:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824490913] [2024-11-03 05:42:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [824490913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:42:16,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:42:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24] total 51 [2024-11-03 05:42:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880235936] [2024-11-03 05:42:16,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:42:16,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-03 05:42:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:42:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-03 05:42:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2384, Unknown=0, NotChecked=0, Total=2550 [2024-11-03 05:42:16,537 INFO L87 Difference]: Start difference. First operand 1461 states and 1766 transitions. Second operand has 51 states, 51 states have (on average 2.8627450980392157) internal successors, (146), 51 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)