/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:40:10,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:40:10,383 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 00:40:10,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:40:10,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:40:10,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:40:10,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:40:10,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:40:10,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:40:10,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:40:10,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:40:10,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:40:10,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:40:10,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:40:10,419 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:40:10,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:40:10,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:40:10,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:40:10,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:40:10,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:40:10,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:40:10,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:40:10,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:40:10,427 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:40:10,427 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:40:10,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:40:10,427 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:40:10,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:40:10,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:40:10,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:40:10,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:40:10,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:40:10,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:40:10,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:40:10,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:40:10,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:40:10,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:40:10,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:40:10,431 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:40:10,431 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:10,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:40:10,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:40:10,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:40:10,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:40:10,432 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:10,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:40:10,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:40:10,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:40:10,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:40:10,739 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:40:10,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-90.i [2024-11-03 00:40:12,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:40:12,388 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-03 00:40:12,576 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:40:12,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-90.i [2024-11-03 00:40:12,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94eadb8b3/bd630da60fb5491c9e11d578042414a7/FLAG1704c5dc0 [2024-11-03 00:40:12,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94eadb8b3/bd630da60fb5491c9e11d578042414a7 [2024-11-03 00:40:12,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:40:12,945 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:40:12,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:40:12,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:40:12,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:40:12,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:40:12" (1/1) ... [2024-11-03 00:40:12,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26aa207c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:12, skipping insertion in model container [2024-11-03 00:40:12,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:40:12" (1/1) ... [2024-11-03 00:40:12,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:40:13,151 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-90.i[917,930] [2024-11-03 00:40:13,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:40:13,213 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:40:13,225 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-90.i[917,930] [2024-11-03 00:40:13,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:40:13,267 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:40:13,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13 WrapperNode [2024-11-03 00:40:13,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:40:13,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:40:13,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:40:13,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:40:13,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,314 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2024-11-03 00:40:13,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:40:13,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:40:13,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:40:13,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:40:13,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,347 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 00:40:13,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:40:13,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:40:13,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:40:13,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:40:13,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (1/1) ... [2024-11-03 00:40:13,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:40:13,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:40:13,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 00:40:13,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 00:40:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:40:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:40:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 00:40:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 00:40:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:40:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:40:13,542 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:40:13,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:40:13,884 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-03 00:40:13,884 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:40:13,903 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:40:13,903 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 00:40:13,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:13 BoogieIcfgContainer [2024-11-03 00:40:13,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:40:13,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:40:13,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:40:13,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:40:13,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:40:12" (1/3) ... [2024-11-03 00:40:13,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365086e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:13, skipping insertion in model container [2024-11-03 00:40:13,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:13" (2/3) ... [2024-11-03 00:40:13,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365086e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:13, skipping insertion in model container [2024-11-03 00:40:13,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:13" (3/3) ... [2024-11-03 00:40:13,915 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-90.i [2024-11-03 00:40:13,939 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:40:13,940 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:40:14,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:40:14,070 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;@46538314, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:40:14,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:40:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 35 states have internal predecessors, (46), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:40:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-03 00:40:14,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:40:14,091 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:40:14,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:40:14,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:40:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1039288057, now seen corresponding path program 1 times [2024-11-03 00:40:14,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:40:14,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86774492] [2024-11-03 00:40:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:40:14,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:40:14,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:40:14,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 00:40:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:40:14,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 00:40:14,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:40:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-03 00:40:14,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:40:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-03 00:40:14,538 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:40:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86774492] [2024-11-03 00:40:14,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [86774492] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:40:14,540 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:40:14,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 00:40:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194675297] [2024-11-03 00:40:14,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:40:14,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 00:40:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:40:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 00:40:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:40:14,577 INFO L87 Difference]: Start difference. First operand has 57 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 35 states have internal predecessors, (46), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:40:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:40:14,610 INFO L93 Difference]: Finished difference Result 107 states and 186 transitions. [2024-11-03 00:40:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 00:40:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2024-11-03 00:40:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:40:14,622 INFO L225 Difference]: With dead ends: 107 [2024-11-03 00:40:14,622 INFO L226 Difference]: Without dead ends: 53 [2024-11-03 00:40:14,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:40:14,632 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:40:14,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:40:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-03 00:40:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-03 00:40:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:40:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-11-03 00:40:14,689 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 124 [2024-11-03 00:40:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:40:14,689 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-11-03 00:40:14,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:40:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-11-03 00:40:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-03 00:40:14,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:40:14,694 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:40:14,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 00:40:14,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:14,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:40:14,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:40:14,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1080942329, now seen corresponding path program 1 times [2024-11-03 00:40:14,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:40:14,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180297368] [2024-11-03 00:40:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:40:14,898 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:14,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:40:14,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:40:14,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 00:40:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:40:15,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 00:40:15,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:40:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 468 proven. 54 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-03 00:40:15,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:40:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 57 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-03 00:40:16,121 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:40:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180297368] [2024-11-03 00:40:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1180297368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:40:16,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:40:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-03 00:40:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738226619] [2024-11-03 00:40:16,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:40:16,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 00:40:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:40:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 00:40:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-03 00:40:16,126 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-03 00:40:16,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:40:16,768 INFO L93 Difference]: Finished difference Result 121 states and 170 transitions. [2024-11-03 00:40:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-03 00:40:16,771 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 124 [2024-11-03 00:40:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:40:16,773 INFO L225 Difference]: With dead ends: 121 [2024-11-03 00:40:16,773 INFO L226 Difference]: Without dead ends: 71 [2024-11-03 00:40:16,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2024-11-03 00:40:16,776 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 108 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 00:40:16,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 161 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 00:40:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-03 00:40:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-11-03 00:40:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:40:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2024-11-03 00:40:16,797 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 124 [2024-11-03 00:40:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:40:16,797 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2024-11-03 00:40:16,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-03 00:40:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2024-11-03 00:40:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-03 00:40:16,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:40:16,800 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:40:16,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 00:40:17,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:17,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:40:17,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:40:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1163479113, now seen corresponding path program 1 times [2024-11-03 00:40:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:40:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013133724] [2024-11-03 00:40:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:40:17,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:17,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:40:17,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:40:17,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 00:40:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:40:17,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 00:40:17,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:40:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 303 proven. 18 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-03 00:40:17,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:40:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 135 proven. 27 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-03 00:40:17,904 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:40:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013133724] [2024-11-03 00:40:17,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013133724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:40:17,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:40:17,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2024-11-03 00:40:17,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892015504] [2024-11-03 00:40:17,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:40:17,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 00:40:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:40:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 00:40:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2024-11-03 00:40:17,908 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-03 00:40:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:40:18,770 INFO L93 Difference]: Finished difference Result 229 states and 289 transitions. [2024-11-03 00:40:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-03 00:40:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 125 [2024-11-03 00:40:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:40:18,774 INFO L225 Difference]: With dead ends: 229 [2024-11-03 00:40:18,774 INFO L226 Difference]: Without dead ends: 167 [2024-11-03 00:40:18,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2024-11-03 00:40:18,776 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 170 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 00:40:18,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 218 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 00:40:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-03 00:40:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 79. [2024-11-03 00:40:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:40:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2024-11-03 00:40:18,804 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 125 [2024-11-03 00:40:18,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:40:18,805 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2024-11-03 00:40:18,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-03 00:40:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2024-11-03 00:40:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-03 00:40:18,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:40:18,811 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:40:18,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 00:40:19,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:19,012 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:40:19,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:40:19,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1165326155, now seen corresponding path program 1 times [2024-11-03 00:40:19,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:40:19,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071648801] [2024-11-03 00:40:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:40:19,013 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:40:19,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:40:19,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:40:19,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 00:40:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:40:19,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-03 00:40:19,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:40:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 178 proven. 96 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-03 00:40:23,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:41:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 00:41:07,433 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:41:07,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071648801] [2024-11-03 00:41:07,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071648801] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 00:41:07,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 00:41:07,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 26 [2024-11-03 00:41:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801505225] [2024-11-03 00:41:07,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 00:41:07,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 00:41:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:41:07,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 00:41:07,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-11-03 00:41:07,437 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:41:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:41:16,650 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2024-11-03 00:41:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 00:41:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2024-11-03 00:41:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:41:16,653 INFO L225 Difference]: With dead ends: 136 [2024-11-03 00:41:16,653 INFO L226 Difference]: Without dead ends: 134 [2024-11-03 00:41:16,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2024-11-03 00:41:16,655 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 126 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 00:41:16,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 395 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 00:41:16,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-03 00:41:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2024-11-03 00:41:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-03 00:41:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2024-11-03 00:41:16,682 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 125 [2024-11-03 00:41:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:41:16,688 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2024-11-03 00:41:16,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-03 00:41:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2024-11-03 00:41:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-03 00:41:16,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:41:16,691 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:41:16,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 00:41:16,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 00:41:16,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:41:16,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:41:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -611528249, now seen corresponding path program 1 times [2024-11-03 00:41:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:41:16,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737149321] [2024-11-03 00:41:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:41:16,907 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:41:16,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:41:16,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 00:41:16,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 00:41:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:41:17,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 00:41:17,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:41:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-03 00:41:19,442 INFO L311 TraceCheckSpWp]: Computing backward predicates...