/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-esbmc-regression/nearbyint.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:54:43,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:54:43,127 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 13:54:43,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:54:43,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:54:43,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:54:43,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:54:43,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:54:43,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:54:43,165 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:54:43,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:54:43,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:54:43,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:54:43,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:54:43,166 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:54:43,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:54:43,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:54:43,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:54:43,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:54:43,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:54:43,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:54:43,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:54:43,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:54:43,173 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:54:43,173 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:54:43,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:54:43,173 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:54:43,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:54:43,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:54:43,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:54:43,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:54:43,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:54:43,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:54:43,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:54:43,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:54:43,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:54:43,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:54:43,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:54:43,177 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:54:43,178 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:54:43,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:54:43,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:54:43,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:54:43,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:54:43,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:54:43,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:54:43,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:54:43,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:54:43,412 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:54:43,412 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:54:43,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/nearbyint.i [2024-11-03 13:54:44,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:54:44,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:54:44,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/nearbyint.i [2024-11-03 13:54:45,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c8352e6/417b7d4cf773451b80440b348f28b50e/FLAG92051bfa6 [2024-11-03 13:54:45,018 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c8352e6/417b7d4cf773451b80440b348f28b50e [2024-11-03 13:54:45,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:54:45,021 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:54:45,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:54:45,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:54:45,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:54:45,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b84a174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45, skipping insertion in model container [2024-11-03 13:54:45,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:54:45,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/nearbyint.i[38068,38081] [2024-11-03 13:54:45,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:54:45,509 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:54:45,541 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/nearbyint.i[38068,38081] [2024-11-03 13:54:45,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:54:45,675 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:54:45,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45 WrapperNode [2024-11-03 13:54:45,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:54:45,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:54:45,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:54:45,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:54:45,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,737 INFO L138 Inliner]: procedures = 463, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2024-11-03 13:54:45,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:54:45,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:54:45,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:54:45,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:54:45,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,763 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-03 13:54:45,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:54:45,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:54:45,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:54:45,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:54:45,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (1/1) ... [2024-11-03 13:54:45,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:54:45,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:54:45,820 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 13:54:45,823 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 13:54:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 13:54:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:54:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 13:54:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 13:54:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 13:54:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 13:54:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 13:54:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:54:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:54:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:54:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 13:54:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 13:54:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 13:54:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2024-11-03 13:54:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2024-11-03 13:54:45,998 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:54:46,002 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:54:46,250 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-03 13:54:46,251 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:54:46,262 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:54:46,262 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:54:46,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:46 BoogieIcfgContainer [2024-11-03 13:54:46,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:54:46,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:54:46,264 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:54:46,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:54:46,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:54:45" (1/3) ... [2024-11-03 13:54:46,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e22319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:46, skipping insertion in model container [2024-11-03 13:54:46,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:45" (2/3) ... [2024-11-03 13:54:46,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e22319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:46, skipping insertion in model container [2024-11-03 13:54:46,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:46" (3/3) ... [2024-11-03 13:54:46,270 INFO L112 eAbstractionObserver]: Analyzing ICFG nearbyint.i [2024-11-03 13:54:46,281 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:54:46,282 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:54:46,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:54:46,338 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;@62899237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:54:46,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:54:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 43 states have internal predecessors, (50), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-03 13:54:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-03 13:54:46,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:46,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:46,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:46,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash 60099875, now seen corresponding path program 1 times [2024-11-03 13:54:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751911781] [2024-11-03 13:54:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:46,360 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:46,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:46,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:54:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:46,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:54:46,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:54:46,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:54:46,660 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:46,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751911781] [2024-11-03 13:54:46,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [751911781] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:46,664 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:46,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 13:54:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689229485] [2024-11-03 13:54:46,666 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:46,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:54:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:54:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:46,694 INFO L87 Difference]: Start difference. First operand has 63 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 43 states have internal predecessors, (50), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:54:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:46,907 INFO L93 Difference]: Finished difference Result 148 states and 251 transitions. [2024-11-03 13:54:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:54:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-11-03 13:54:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:46,921 INFO L225 Difference]: With dead ends: 148 [2024-11-03 13:54:46,921 INFO L226 Difference]: Without dead ends: 83 [2024-11-03 13:54:46,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:54:46,930 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 30 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:46,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 313 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:54:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-03 13:54:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2024-11-03 13:54:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.263157894736842) internal successors, (48), 44 states have internal predecessors, (48), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 17 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-03 13:54:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2024-11-03 13:54:46,978 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 13 [2024-11-03 13:54:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:46,979 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2024-11-03 13:54:46,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:54:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2024-11-03 13:54:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 13:54:46,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:46,981 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:46,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:54:47,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:47,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:47,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash -39663284, now seen corresponding path program 1 times [2024-11-03 13:54:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453934566] [2024-11-03 13:54:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:47,184 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:47,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:47,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:54:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:47,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:54:47,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:54:47,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:54:47,336 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453934566] [2024-11-03 13:54:47,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1453934566] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:47,337 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:47,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 13:54:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329924801] [2024-11-03 13:54:47,337 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:47,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:54:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:54:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:47,340 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:54:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:47,506 INFO L93 Difference]: Finished difference Result 147 states and 220 transitions. [2024-11-03 13:54:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:54:47,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-11-03 13:54:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:47,509 INFO L225 Difference]: With dead ends: 147 [2024-11-03 13:54:47,509 INFO L226 Difference]: Without dead ends: 87 [2024-11-03 13:54:47,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:54:47,512 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 31 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:47,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 387 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:54:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-03 13:54:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2024-11-03 13:54:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 47 states have internal predecessors, (51), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 17 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-03 13:54:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2024-11-03 13:54:47,532 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 14 [2024-11-03 13:54:47,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:47,532 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2024-11-03 13:54:47,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:54:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2024-11-03 13:54:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-03 13:54:47,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:47,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:47,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:54:47,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:47,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:47,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash 715308360, now seen corresponding path program 1 times [2024-11-03 13:54:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199180071] [2024-11-03 13:54:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:47,737 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:47,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:47,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:47,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:54:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:47,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:54:47,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:54:47,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:54:47,889 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:47,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199180071] [2024-11-03 13:54:47,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1199180071] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:47,890 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:47,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 13:54:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812900567] [2024-11-03 13:54:47,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:47,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:54:47,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:47,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:54:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:47,896 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:54:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:48,045 INFO L93 Difference]: Finished difference Result 156 states and 229 transitions. [2024-11-03 13:54:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:54:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-11-03 13:54:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:48,047 INFO L225 Difference]: With dead ends: 156 [2024-11-03 13:54:48,047 INFO L226 Difference]: Without dead ends: 92 [2024-11-03 13:54:48,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:54:48,049 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 17 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:48,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 458 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:54:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-03 13:54:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2024-11-03 13:54:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 51 states have internal predecessors, (55), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (24), 17 states have call predecessors, (24), 21 states have call successors, (24) [2024-11-03 13:54:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-11-03 13:54:48,066 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 15 [2024-11-03 13:54:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:48,066 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-11-03 13:54:48,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:54:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-11-03 13:54:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-03 13:54:48,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:48,067 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:48,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 13:54:48,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:48,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:48,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:48,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2097712175, now seen corresponding path program 1 times [2024-11-03 13:54:48,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:48,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149933033] [2024-11-03 13:54:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:48,269 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:48,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:48,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:48,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:54:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:54:48,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 13:54:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:54:48,341 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 13:54:48,341 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 13:54:48,342 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 13:54:48,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:54:48,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:48,547 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-03 13:54:48,559 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 13:54:48,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:54:48 BoogieIcfgContainer [2024-11-03 13:54:48,562 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 13:54:48,563 INFO L158 Benchmark]: Toolchain (without parser) took 3541.72ms. Allocated memory was 188.7MB in the beginning and 318.8MB in the end (delta: 130.0MB). Free memory was 138.8MB in the beginning and 147.3MB in the end (delta: -8.5MB). Peak memory consumption was 122.3MB. Max. memory is 8.0GB. [2024-11-03 13:54:48,564 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 188.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 13:54:48,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 653.42ms. Allocated memory was 188.7MB in the beginning and 318.8MB in the end (delta: 130.0MB). Free memory was 138.5MB in the beginning and 277.9MB in the end (delta: -139.4MB). Peak memory consumption was 46.8MB. Max. memory is 8.0GB. [2024-11-03 13:54:48,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.63ms. Allocated memory is still 318.8MB. Free memory was 277.9MB in the beginning and 274.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 13:54:48,565 INFO L158 Benchmark]: Boogie Preprocessor took 42.43ms. Allocated memory is still 318.8MB. Free memory was 274.7MB in the beginning and 272.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:54:48,566 INFO L158 Benchmark]: RCFGBuilder took 481.03ms. Allocated memory is still 318.8MB. Free memory was 272.1MB in the beginning and 253.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2024-11-03 13:54:48,566 INFO L158 Benchmark]: TraceAbstraction took 2298.03ms. Allocated memory is still 318.8MB. Free memory was 252.2MB in the beginning and 147.3MB in the end (delta: 104.9MB). Peak memory consumption was 104.9MB. Max. memory is 8.0GB. [2024-11-03 13:54:48,568 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 188.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 653.42ms. Allocated memory was 188.7MB in the beginning and 318.8MB in the end (delta: 130.0MB). Free memory was 138.5MB in the beginning and 277.9MB in the end (delta: -139.4MB). Peak memory consumption was 46.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.63ms. Allocated memory is still 318.8MB. Free memory was 277.9MB in the beginning and 274.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.43ms. Allocated memory is still 318.8MB. Free memory was 274.7MB in the beginning and 272.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 481.03ms. Allocated memory is still 318.8MB. Free memory was 272.1MB in the beginning and 253.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 2298.03ms. Allocated memory is still 318.8MB. Free memory was 252.2MB in the beginning and 147.3MB in the end (delta: 104.9MB). Peak memory consumption was 104.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 997]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of nearbyint at line 1006. Possible FailurePath: [L1000] int const modes[] = {0x400, 0, 0xc00, 0x800}; [L1000] int const modes[] = {0x400, 0, 0xc00, 0x800}; [L1000] int const modes[] = {0x400, 0, 0xc00, 0x800}; [L1000] int const modes[] = {0x400, 0, 0xc00, 0x800}; [L1000] int const modes[] = {0x400, 0, 0xc00, 0x800}; [L1002] int i = 0; VAL [i=0, modes={-1:0}] [L1002] COND TRUE i < sizeof(modes) / sizeof(int) [L1003] EXPR modes[i] [L1003] FCALL fesetround(modes[i]) VAL [i=0, modes={-1:0}] [L1004] modes[i] [L1005] case 0x400: [L1006] CALL __VERIFIER_assert(nearbyint(12.9) == 12.) VAL [\old(cond)=0] [L997] COND TRUE !(cond) VAL [\old(cond)=0] [L997] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 1158 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 906 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 252 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 12 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-03 13:54:48,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...