/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/zonotope_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:21:07,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:21:07,259 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 02:21:07,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:21:07,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:21:07,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:21:07,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:21:07,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:21:07,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:21:07,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:21:07,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:21:07,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:21:07,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:21:07,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:21:07,302 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:21:07,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:21:07,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:21:07,303 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:21:07,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:21:07,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:21:07,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:21:07,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:21:07,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:21:07,306 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:21:07,306 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:21:07,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:21:07,306 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:21:07,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:21:07,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:21:07,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:21:07,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:21:07,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:21:07,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:21:07,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:21:07,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:21:07,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:21:07,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:21:07,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:21:07,309 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:21:07,309 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:07,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:21:07,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:21:07,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:21:07,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:21:07,311 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:07,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:21:07,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:21:07,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:21:07,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:21:07,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:21:07,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c [2024-11-03 02:21:08,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:21:09,130 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:21:09,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c [2024-11-03 02:21:09,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98aab107d/ba5f0729d49945739ca0d5f5fe30529b/FLAGa85ef7e36 [2024-11-03 02:21:09,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98aab107d/ba5f0729d49945739ca0d5f5fe30529b [2024-11-03 02:21:09,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:21:09,155 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:21:09,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:21:09,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:21:09,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:21:09,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38544a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09, skipping insertion in model container [2024-11-03 02:21:09,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:21:09,350 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c[604,617] [2024-11-03 02:21:09,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:21:09,376 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:21:09,386 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c[604,617] [2024-11-03 02:21:09,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:21:09,406 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:21:09,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09 WrapperNode [2024-11-03 02:21:09,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:21:09,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:21:09,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:21:09,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:21:09,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,437 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-03 02:21:09,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:21:09,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:21:09,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:21:09,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:21:09,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,460 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 02:21:09,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:21:09,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:21:09,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:21:09,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:21:09,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (1/1) ... [2024-11-03 02:21:09,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:21:09,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:21:09,520 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 02:21:09,523 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 02:21:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:21:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-03 02:21:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-03 02:21:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-03 02:21:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-03 02:21:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:21:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:21:09,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:21:09,604 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:21:09,606 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:21:10,499 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-03 02:21:10,500 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:21:10,512 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:21:10,512 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 02:21:10,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:10 BoogieIcfgContainer [2024-11-03 02:21:10,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:21:10,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:21:10,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:21:10,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:21:10,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:21:09" (1/3) ... [2024-11-03 02:21:10,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d39ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:10, skipping insertion in model container [2024-11-03 02:21:10,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:09" (2/3) ... [2024-11-03 02:21:10,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d39ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:10, skipping insertion in model container [2024-11-03 02:21:10,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:10" (3/3) ... [2024-11-03 02:21:10,524 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2024-11-03 02:21:10,540 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:21:10,541 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:21:10,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:21:10,601 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;@42f9d838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:21:10,601 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:21:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 02:21:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 02:21:10,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:21:10,614 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] [2024-11-03 02:21:10,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:21:10,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:21:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -791121696, now seen corresponding path program 1 times [2024-11-03 02:21:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:21:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684970441] [2024-11-03 02:21:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:21:10,630 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:10,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:21:10,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:21:10,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 02:21:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:21:11,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:21:11,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:21:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 02:21:11,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:21:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 02:21:11,207 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:21:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684970441] [2024-11-03 02:21:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1684970441] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:21:11,208 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:21:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:21:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821306934] [2024-11-03 02:21:11,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:21:11,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:21:11,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:21:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:21:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:21:11,241 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 02:21:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:21:12,025 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-03 02:21:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:21:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2024-11-03 02:21:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:21:12,033 INFO L225 Difference]: With dead ends: 75 [2024-11-03 02:21:12,033 INFO L226 Difference]: Without dead ends: 45 [2024-11-03 02:21:12,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 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 02:21:12,038 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 02:21:12,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 72 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 02:21:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-03 02:21:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-03 02:21:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 02:21:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-03 02:21:12,075 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 26 [2024-11-03 02:21:12,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:21:12,076 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-03 02:21:12,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 02:21:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-03 02:21:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 02:21:12,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:21:12,079 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:21:12,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 02:21:12,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:12,280 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:21:12,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:21:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1297373878, now seen corresponding path program 1 times [2024-11-03 02:21:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:21:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972992654] [2024-11-03 02:21:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:21:12,282 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:12,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:21:12,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:21:12,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 02:21:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:21:13,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 02:21:13,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:21:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-03 02:21:13,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:21:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-03 02:21:14,189 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:21:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972992654] [2024-11-03 02:21:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [972992654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:21:14,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:21:14,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 02:21:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943479306] [2024-11-03 02:21:14,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:21:14,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 02:21:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:21:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 02:21:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 02:21:14,196 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-03 02:21:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:21:17,388 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2024-11-03 02:21:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 02:21:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 74 [2024-11-03 02:21:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:21:17,404 INFO L225 Difference]: With dead ends: 97 [2024-11-03 02:21:17,404 INFO L226 Difference]: Without dead ends: 93 [2024-11-03 02:21:17,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:21:17,406 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 35 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:21:17,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 236 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-03 02:21:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-03 02:21:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-03 02:21:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-03 02:21:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2024-11-03 02:21:17,426 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 74 [2024-11-03 02:21:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:21:17,426 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2024-11-03 02:21:17,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-03 02:21:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2024-11-03 02:21:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-03 02:21:17,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:21:17,435 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:21:17,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 02:21:17,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:17,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:21:17,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:21:17,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1141480862, now seen corresponding path program 2 times [2024-11-03 02:21:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:21:17,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005645491] [2024-11-03 02:21:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:21:17,638 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:21:17,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:21:17,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 02:21:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:21:21,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 02:21:21,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:21:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-03 02:21:21,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:21:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-03 02:21:22,475 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:21:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005645491] [2024-11-03 02:21:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2005645491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:21:22,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:21:22,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 02:21:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820341779] [2024-11-03 02:21:22,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:21:22,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 02:21:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:21:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 02:21:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-03 02:21:22,479 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 13 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) [2024-11-03 02:21:29,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 02:21:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:21:33,938 INFO L93 Difference]: Finished difference Result 193 states and 258 transitions. [2024-11-03 02:21:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 02:21:33,951 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 13 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) Word has length 170 [2024-11-03 02:21:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:21:33,955 INFO L225 Difference]: With dead ends: 193 [2024-11-03 02:21:33,955 INFO L226 Difference]: Without dead ends: 189 [2024-11-03 02:21:33,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2024-11-03 02:21:33,957 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 56 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:21:33,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 737 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-03 02:21:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-03 02:21:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-03 02:21:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 02:21:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2024-11-03 02:21:33,987 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 170 [2024-11-03 02:21:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:21:33,988 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2024-11-03 02:21:33,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 13 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) [2024-11-03 02:21:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2024-11-03 02:21:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-03 02:21:33,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:21:34,000 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:21:34,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 02:21:34,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:34,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:21:34,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:21:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1367129670, now seen corresponding path program 3 times [2024-11-03 02:21:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:21:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225434585] [2024-11-03 02:21:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:21:34,202 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:21:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:21:34,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:21:34,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 02:21:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:21:43,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 02:21:43,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:21:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3716 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2024-11-03 02:21:44,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:21:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3716 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2024-11-03 02:21:45,921 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:21:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225434585] [2024-11-03 02:21:45,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1225434585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:21:45,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:21:45,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-03 02:21:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108721451] [2024-11-03 02:21:45,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:21:45,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-03 02:21:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:21:45,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-03 02:21:45,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-03 02:21:45,931 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 29 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 29 states have call predecessors, (116), 29 states have call successors, (116) [2024-11-03 02:22:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:22:12,408 INFO L93 Difference]: Finished difference Result 385 states and 522 transitions. [2024-11-03 02:22:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-03 02:22:12,422 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 29 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 29 states have call predecessors, (116), 29 states have call successors, (116) Word has length 362 [2024-11-03 02:22:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:22:12,426 INFO L225 Difference]: With dead ends: 385 [2024-11-03 02:22:12,426 INFO L226 Difference]: Without dead ends: 381 [2024-11-03 02:22:12,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 02:22:12,428 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 119 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2024-11-03 02:22:12,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2919 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 24.6s Time] [2024-11-03 02:22:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-03 02:22:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-03 02:22:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 254 states have (on average 1.0039370078740157) internal successors, (255), 254 states have internal predecessors, (255), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-03 02:22:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 503 transitions. [2024-11-03 02:22:12,482 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 503 transitions. Word has length 362 [2024-11-03 02:22:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:22:12,484 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 503 transitions. [2024-11-03 02:22:12,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 29 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 29 states have call predecessors, (116), 29 states have call successors, (116) [2024-11-03 02:22:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 503 transitions. [2024-11-03 02:22:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2024-11-03 02:22:12,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:22:12,503 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:22:12,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 02:22:12,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:22:12,704 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:22:12,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:22:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1572880490, now seen corresponding path program 4 times [2024-11-03 02:22:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:22:12,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242072720] [2024-11-03 02:22:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:22:12,707 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:22:12,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:22:12,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:22:12,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 02:22:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:22:40,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-03 02:22:40,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:22:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16596 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 11346 trivial. 0 not checked. [2024-11-03 02:22:42,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:22:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16596 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 11346 trivial. 0 not checked. [2024-11-03 02:22:46,141 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:22:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242072720] [2024-11-03 02:22:46,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1242072720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:22:46,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:22:46,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2024-11-03 02:22:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878858281] [2024-11-03 02:22:46,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:22:46,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-03 02:22:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:22:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-03 02:22:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2024-11-03 02:22:46,148 INFO L87 Difference]: Start difference. First operand 381 states and 503 transitions. Second operand has 64 states, 64 states have (on average 7.75) internal successors, (496), 64 states have internal predecessors, (496), 61 states have call successors, (244), 1 states have call predecessors, (244), 1 states have return successors, (244), 61 states have call predecessors, (244), 61 states have call successors, (244)