/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -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 [2024-11-02 22:56:40,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:56:40,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 22:56:40,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:56:40,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:56:40,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:56:40,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:56:40,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:56:40,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:56:40,252 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:56:40,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:56:40,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:56:40,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:56:40,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:56:40,253 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:56:40,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:56:40,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:56:40,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:56:40,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:56:40,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:56:40,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:56:40,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:56:40,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:56:40,255 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:56:40,256 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:56:40,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:56:40,256 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:56:40,256 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:56:40,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:56:40,256 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:56:40,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:56:40,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:56:40,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:56:40,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:56:40,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:56:40,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:56:40,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:56:40,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:56:40,258 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:56:40,258 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:56:40,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:56:40,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:56:40,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:56:40,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:56:40,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:56:40,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:56:40,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:56:40,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:56:40,515 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:56:40,515 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:56:40,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c [2024-11-02 22:56:41,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:56:41,960 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:56:41,960 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c [2024-11-02 22:56:41,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84835130b/6ce6a0180753486f8a205ac8ae0f942f/FLAGb0388668f [2024-11-02 22:56:41,975 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84835130b/6ce6a0180753486f8a205ac8ae0f942f [2024-11-02 22:56:41,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:56:41,978 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:56:41,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:56:41,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:56:41,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:56:41,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:56:41" (1/1) ... [2024-11-02 22:56:41,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507f94f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:41, skipping insertion in model container [2024-11-02 22:56:41,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:56:41" (1/1) ... [2024-11-02 22:56:41,997 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:56:42,120 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] [2024-11-02 22:56:42,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:56:42,143 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:56:42,152 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] [2024-11-02 22:56:42,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:56:42,167 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:56:42,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42 WrapperNode [2024-11-02 22:56:42,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:56:42,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:56:42,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:56:42,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:56:42,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,193 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-02 22:56:42,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:56:42,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:56:42,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:56:42,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:56:42,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,210 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]. [2024-11-02 22:56:42,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:56:42,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:56:42,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:56:42,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:56:42,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (1/1) ... [2024-11-02 22:56:42,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:56:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:56:42,244 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) [2024-11-02 22:56:42,246 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 [2024-11-02 22:56:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:56:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-02 22:56:42,264 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-02 22:56:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-02 22:56:42,264 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-02 22:56:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:56:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:56:42,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:56:42,330 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:56:42,333 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:56:43,084 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-02 22:56:43,084 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:56:43,096 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:56:43,096 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:56:43,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:43 BoogieIcfgContainer [2024-11-02 22:56:43,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:56:43,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:56:43,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:56:43,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:56:43,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:56:41" (1/3) ... [2024-11-02 22:56:43,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2471e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:56:43, skipping insertion in model container [2024-11-02 22:56:43,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:42" (2/3) ... [2024-11-02 22:56:43,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2471e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:56:43, skipping insertion in model container [2024-11-02 22:56:43,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:43" (3/3) ... [2024-11-02 22:56:43,142 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2024-11-02 22:56:43,159 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:56:43,159 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:56:43,247 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:56:43,251 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;@209394a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:56:43,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:56:43,258 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) [2024-11-02 22:56:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 22:56:43,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:56:43,265 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] [2024-11-02 22:56:43,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:56:43,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:56:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -791121696, now seen corresponding path program 1 times [2024-11-02 22:56:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:56:43,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337381317] [2024-11-02 22:56:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:56:43,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:56:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:56:43,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:56:43,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 22:56:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:56:43,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:56:43,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:56:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 22:56:43,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:56:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 22:56:43,516 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:56:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337381317] [2024-11-02 22:56:43,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1337381317] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:56:43,517 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:56:43,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:56:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993386156] [2024-11-02 22:56:43,519 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:56:43,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:56:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:56:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:56:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:56:43,538 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) [2024-11-02 22:56:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:56:44,269 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-02 22:56:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:56:44,271 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 [2024-11-02 22:56:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:56:44,276 INFO L225 Difference]: With dead ends: 75 [2024-11-02 22:56:44,276 INFO L226 Difference]: Without dead ends: 45 [2024-11-02 22:56:44,278 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 [2024-11-02 22:56:44,280 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 [2024-11-02 22:56:44,280 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] [2024-11-02 22:56:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-02 22:56:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-02 22:56:44,304 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) [2024-11-02 22:56:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-02 22:56:44,306 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 26 [2024-11-02 22:56:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:56:44,306 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-02 22:56:44,307 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) [2024-11-02 22:56:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-02 22:56:44,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-02 22:56:44,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:56:44,309 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] [2024-11-02 22:56:44,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 22:56:44,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:56:44,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:56:44,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:56:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1297373878, now seen corresponding path program 1 times [2024-11-02 22:56:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:56:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982668166] [2024-11-02 22:56:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:56:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:56:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:56:44,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:56:44,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 22:56:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:56:45,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 22:56:45,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:56:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-02 22:56:45,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:56:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-02 22:56:45,416 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:56:45,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982668166] [2024-11-02 22:56:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [982668166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:56:45,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:56:45,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-02 22:56:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700858334] [2024-11-02 22:56:45,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:56:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:56:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:56:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:56:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:56:45,419 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) [2024-11-02 22:56:48,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:56:48,581 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2024-11-02 22:56:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 22:56:48,594 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 [2024-11-02 22:56:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:56:48,595 INFO L225 Difference]: With dead ends: 97 [2024-11-02 22:56:48,595 INFO L226 Difference]: Without dead ends: 93 [2024-11-02 22:56:48,596 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 [2024-11-02 22:56:48,597 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 [2024-11-02 22:56:48,598 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] [2024-11-02 22:56:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-02 22:56:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-02 22:56:48,615 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) [2024-11-02 22:56:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2024-11-02 22:56:48,620 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 74 [2024-11-02 22:56:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:56:48,621 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2024-11-02 22:56:48,621 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) [2024-11-02 22:56:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2024-11-02 22:56:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-02 22:56:48,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:56:48,626 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] [2024-11-02 22:56:48,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 22:56:48,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:56:48,827 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:56:48,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:56:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1141480862, now seen corresponding path program 2 times [2024-11-02 22:56:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:56:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684231157] [2024-11-02 22:56:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:56:48,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:56:48,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:56:48,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:56:48,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 22:56:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:56:50,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 22:56:50,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:56:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-02 22:56:50,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:56:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-02 22:56:51,430 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:56:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684231157] [2024-11-02 22:56:51,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [684231157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:56:51,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:56:51,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-02 22:56:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014012114] [2024-11-02 22:56:51,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:56:51,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-02 22:56:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:56:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-02 22:56:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-02 22:56:51,433 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 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) [2024-11-02 22:57:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:57:01,350 INFO L93 Difference]: Finished difference Result 193 states and 258 transitions. [2024-11-02 22:57:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 22:57:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 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 [2024-11-02 22:57:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:57:01,365 INFO L225 Difference]: With dead ends: 193 [2024-11-02 22:57:01,365 INFO L226 Difference]: Without dead ends: 189 [2024-11-02 22:57:01,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=316, Unknown=0, NotChecked=0, Total=506 [2024-11-02 22:57:01,370 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 56 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-02 22:57:01,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 790 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-02 22:57:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-02 22:57:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-02 22:57:01,410 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) [2024-11-02 22:57:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2024-11-02 22:57:01,413 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 170 [2024-11-02 22:57:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:57:01,417 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2024-11-02 22:57:01,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 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) [2024-11-02 22:57:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2024-11-02 22:57:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-02 22:57:01,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:57:01,426 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] [2024-11-02 22:57:01,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 22:57:01,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:01,626 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:57:01,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:57:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1367129670, now seen corresponding path program 3 times [2024-11-02 22:57:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:57:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866373368] [2024-11-02 22:57:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:57:01,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:01,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:57:01,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:57:01,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 22:57:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:57:04,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-02 22:57:04,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:57:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3716 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2024-11-02 22:57:05,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:57:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3716 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2024-11-02 22:57:07,620 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:57:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866373368] [2024-11-02 22:57:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1866373368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:57:07,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:57:07,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2024-11-02 22:57:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442191432] [2024-11-02 22:57:07,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:57:07,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-02 22:57:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:57:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-02 22:57:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=752, Unknown=0, NotChecked=0, Total=1056 [2024-11-02 22:57:07,624 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand has 33 states, 33 states have (on average 7.2727272727272725) internal successors, (240), 33 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) [2024-11-02 22:57:12,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:57:18,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:57:19,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:57:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:57:38,532 INFO L93 Difference]: Finished difference Result 385 states and 522 transitions. [2024-11-02 22:57:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-02 22:57:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.2727272727272725) internal successors, (240), 33 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 [2024-11-02 22:57:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:57:38,553 INFO L225 Difference]: With dead ends: 385 [2024-11-02 22:57:38,553 INFO L226 Difference]: Without dead ends: 381 [2024-11-02 22:57:38,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=766, Invalid=1396, Unknown=0, NotChecked=0, Total=2162 [2024-11-02 22:57:38,554 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 112 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:57:38,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 2998 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 29.1s Time] [2024-11-02 22:57:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-02 22:57:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-02 22:57:38,608 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) [2024-11-02 22:57:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 503 transitions. [2024-11-02 22:57:38,611 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 503 transitions. Word has length 362 [2024-11-02 22:57:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:57:38,612 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 503 transitions. [2024-11-02 22:57:38,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.2727272727272725) internal successors, (240), 33 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) [2024-11-02 22:57:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 503 transitions. [2024-11-02 22:57:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2024-11-02 22:57:38,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:57:38,629 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] [2024-11-02 22:57:38,832 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2024-11-02 22:57:38,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2024-11-02 22:57:38,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:38,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:57:38,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:57:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1572880490, now seen corresponding path program 4 times [2024-11-02 22:57:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:57:38,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296897160] [2024-11-02 22:57:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:57:38,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:38,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:57:38,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:57:38,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 22:57:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:57:46,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-02 22:57:46,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:57:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16596 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 11346 trivial. 0 not checked. [2024-11-02 22:57:47,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:57:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16596 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 11346 trivial. 0 not checked. [2024-11-02 22:57:53,190 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:57:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296897160] [2024-11-02 22:57:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [296897160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:57:53,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:57:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 65 [2024-11-02 22:57:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092205388] [2024-11-02 22:57:53,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:57:53,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-02 22:57:53,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:57:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-02 22:57:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1120, Invalid=3040, Unknown=0, NotChecked=0, Total=4160 [2024-11-02 22:57:53,201 INFO L87 Difference]: Start difference. First operand 381 states and 503 transitions. Second operand has 65 states, 65 states have (on average 7.630769230769231) internal successors, (496), 65 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) [2024-11-02 22:58:02,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:58:07,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []