/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-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 22:50:17,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 22:50:17,320 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 22:50:17,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 22:50:17,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 22:50:17,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 22:50:17,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 22:50:17,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 22:50:17,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 22:50:17,355 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 22:50:17,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 22:50:17,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 22:50:17,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 22:50:17,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 22:50:17,357 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 22:50:17,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 22:50:17,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 22:50:17,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 22:50:17,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 22:50:17,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 22:50:17,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 22:50:17,363 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 22:50:17,363 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 22:50:17,363 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 22:50:17,363 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 22:50:17,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 22:50:17,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 22:50:17,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 22:50:17,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 22:50:17,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 22:50:17,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 22:50:17,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 22:50:17,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 22:50:17,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 22:50:17,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 22:50:17,365 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 22:50:17,365 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 22:50:17,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 22:50:17,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 22:50:17,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 22:50:17,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 22:50:17,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 22:50:17,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 22:50:17,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 22:50:17,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 22:50:17,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 22:50:17,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 22:50:17,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c [2024-11-04 22:50:19,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 22:50:19,346 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 22:50:19,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c [2024-11-04 22:50:19,365 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea002637e/2356620aa45b49bb97188883811627bc/FLAGb67bce5c8 [2024-11-04 22:50:19,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea002637e/2356620aa45b49bb97188883811627bc [2024-11-04 22:50:19,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 22:50:19,386 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 22:50:19,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 22:50:19,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 22:50:19,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 22:50:19,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:50:19" (1/1) ... [2024-11-04 22:50:19,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6134e9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19, skipping insertion in model container [2024-11-04 22:50:19,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:50:19" (1/1) ... [2024-11-04 22:50:19,447 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 22:50:19,637 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326] [2024-11-04 22:50:19,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 22:50:19,882 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 22:50:19,891 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326] [2024-11-04 22:50:19,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 22:50:20,008 INFO L204 MainTranslator]: Completed translation [2024-11-04 22:50:20,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20 WrapperNode [2024-11-04 22:50:20,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 22:50:20,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 22:50:20,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 22:50:20,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 22:50:20,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,102 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 762 [2024-11-04 22:50:20,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 22:50:20,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 22:50:20,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 22:50:20,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 22:50:20,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,124 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,156 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]. [2024-11-04 22:50:20,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 22:50:20,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 22:50:20,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 22:50:20,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 22:50:20,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (1/1) ... [2024-11-04 22:50:20,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 22:50:20,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 22:50:20,246 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) [2024-11-04 22:50:20,249 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 [2024-11-04 22:50:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 22:50:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 22:50:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 22:50:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 22:50:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 22:50:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 22:50:20,497 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 22:50:20,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 22:50:21,619 INFO L? ?]: Removed 344 outVars from TransFormulas that were not future-live. [2024-11-04 22:50:21,620 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 22:50:21,632 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 22:50:21,632 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 22:50:21,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:50:21 BoogieIcfgContainer [2024-11-04 22:50:21,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 22:50:21,635 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 22:50:21,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 22:50:21,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 22:50:21,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:50:19" (1/3) ... [2024-11-04 22:50:21,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c5cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:50:21, skipping insertion in model container [2024-11-04 22:50:21,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:20" (2/3) ... [2024-11-04 22:50:21,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c5cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:50:21, skipping insertion in model container [2024-11-04 22:50:21,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:50:21" (3/3) ... [2024-11-04 22:50:21,642 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c [2024-11-04 22:50:21,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 22:50:21,658 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 22:50:21,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 22:50:21,719 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;@1a6c8ef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 22:50:21,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 22:50:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-04 22:50:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-04 22:50:21,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 22:50:21,734 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 22:50:21,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 22:50:21,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 22:50:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times [2024-11-04 22:50:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 22:50:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638076789] [2024-11-04 22:50:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 22:50:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 22:50:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 22:50:21,747 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) [2024-11-04 22:50:21,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 22:50:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 22:50:22,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-04 22:50:22,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 22:50:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-04 22:50:22,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 22:50:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-04 22:50:23,048 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 22:50:23,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638076789] [2024-11-04 22:50:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [638076789] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 22:50:23,049 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 22:50:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-04 22:50:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343948550] [2024-11-04 22:50:23,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 22:50:23,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 22:50:23,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 22:50:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 22:50:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-04 22:50:23,077 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-04 22:50:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 22:50:23,489 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-04 22:50:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 22:50:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 17 [2024-11-04 22:50:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 22:50:23,497 INFO L225 Difference]: With dead ends: 38 [2024-11-04 22:50:23,497 INFO L226 Difference]: Without dead ends: 22 [2024-11-04 22:50:23,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-04 22:50:23,502 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-04 22:50:23,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-04 22:50:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-04 22:50:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-04 22:50:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-04 22:50:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-04 22:50:23,535 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2024-11-04 22:50:23,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 22:50:23,536 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-04 22:50:23,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-04 22:50:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-04 22:50:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-04 22:50:23,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 22:50:23,539 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-04 22:50:23,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-04 22:50:23,739 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 [2024-11-04 22:50:23,740 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 22:50:23,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 22:50:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash 91156387, now seen corresponding path program 1 times [2024-11-04 22:50:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 22:50:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135255310] [2024-11-04 22:50:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 22:50:23,742 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 22:50:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 22:50:23,744 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) [2024-11-04 22:50:23,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 22:50:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 22:50:24,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-04 22:50:24,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 22:50:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 22:50:25,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 22:50:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 22:50:26,007 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 22:50:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135255310] [2024-11-04 22:50:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [135255310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 22:50:26,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 22:50:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-04 22:50:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617169191] [2024-11-04 22:50:26,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 22:50:26,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-04 22:50:26,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 22:50:26,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-04 22:50:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-04 22:50:26,011 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-04 22:50:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 22:50:29,130 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2024-11-04 22:50:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 22:50:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32 [2024-11-04 22:50:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 22:50:29,132 INFO L225 Difference]: With dead ends: 45 [2024-11-04 22:50:29,132 INFO L226 Difference]: Without dead ends: 43 [2024-11-04 22:50:29,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-04 22:50:29,134 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-04 22:50:29,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-04 22:50:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-04 22:50:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-04 22:50:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-04 22:50:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-11-04 22:50:29,148 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 32 [2024-11-04 22:50:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 22:50:29,149 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-11-04 22:50:29,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-04 22:50:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-11-04 22:50:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-04 22:50:29,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 22:50:29,151 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2024-11-04 22:50:29,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-04 22:50:29,352 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 [2024-11-04 22:50:29,352 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 22:50:29,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 22:50:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 257648895, now seen corresponding path program 2 times [2024-11-04 22:50:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 22:50:29,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925313481] [2024-11-04 22:50:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 22:50:29,354 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 22:50:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 22:50:29,356 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) [2024-11-04 22:50:29,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-04 22:50:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 22:50:31,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-04 22:50:31,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 22:50:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-04 22:50:33,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 22:50:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-04 22:50:35,079 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 22:50:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925313481] [2024-11-04 22:50:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [925313481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 22:50:35,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 22:50:35,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-04 22:50:35,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356085022] [2024-11-04 22:50:35,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 22:50:35,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-04 22:50:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 22:50:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-04 22:50:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-04 22:50:35,083 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-04 22:50:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 22:50:39,147 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2024-11-04 22:50:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-04 22:50:39,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 77 [2024-11-04 22:50:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 22:50:39,149 INFO L225 Difference]: With dead ends: 59 [2024-11-04 22:50:39,149 INFO L226 Difference]: Without dead ends: 57 [2024-11-04 22:50:39,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-11-04 22:50:39,151 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-04 22:50:39,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-04 22:50:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-04 22:50:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-04 22:50:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-04 22:50:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2024-11-04 22:50:39,170 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 77 [2024-11-04 22:50:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 22:50:39,171 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2024-11-04 22:50:39,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-04 22:50:39,171 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2024-11-04 22:50:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-04 22:50:39,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 22:50:39,177 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1] [2024-11-04 22:50:39,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-04 22:50:39,378 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 [2024-11-04 22:50:39,379 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 22:50:39,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 22:50:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash -761811841, now seen corresponding path program 3 times [2024-11-04 22:50:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 22:50:39,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952504635] [2024-11-04 22:50:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 22:50:39,380 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 22:50:39,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 22:50:39,382 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) [2024-11-04 22:50:39,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process