/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:57:05,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:57:05,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 22:57:05,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:57:05,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:57:05,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:57:05,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:57:05,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:57:05,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:57:05,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:57:05,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:57:05,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:57:05,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:57:05,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:57:05,518 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:57:05,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:57:05,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:57:05,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:57:05,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:57:05,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:57:05,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:57:05,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:57:05,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:57:05,521 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:57:05,521 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:57:05,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:57:05,521 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:57:05,521 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:57:05,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:57:05,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:57:05,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:57:05,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:57:05,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:57:05,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:57:05,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:57:05,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:57:05,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:57:05,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:57:05,524 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:57:05,525 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:57:05,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:57:05,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:57:05,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:57:05,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:57:05,526 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:05,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:57:05,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:57:05,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:57:05,775 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:57:05,775 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:57:05,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i [2024-11-02 22:57:07,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:57:07,295 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:57:07,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div.i [2024-11-02 22:57:07,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95816b41/561b8539f1c14a11954074cf576a045a/FLAG756c68ee0 [2024-11-02 22:57:07,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95816b41/561b8539f1c14a11954074cf576a045a [2024-11-02 22:57:07,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:57:07,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:57:07,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:57:07,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:57:07,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:57:07,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53559592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07, skipping insertion in model container [2024-11-02 22:57:07,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:57:07,500 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/Double_div.i[804,817] [2024-11-02 22:57:07,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:57:07,519 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:57:07,530 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/Double_div.i[804,817] [2024-11-02 22:57:07,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:57:07,545 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:57:07,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07 WrapperNode [2024-11-02 22:57:07,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:57:07,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:57:07,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:57:07,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:57:07,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,571 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2024-11-02 22:57:07,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:57:07,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:57:07,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:57:07,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:57:07,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,592 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 22:57:07,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:57:07,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:57:07,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:57:07,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:57:07,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (1/1) ... [2024-11-02 22:57:07,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:57:07,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:57:07,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-02 22:57:07,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-02 22:57:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:57:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:57:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:57:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:57:07,738 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:57:07,740 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:57:08,320 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-02 22:57:08,320 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:57:08,332 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:57:08,332 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:57:08,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:57:08 BoogieIcfgContainer [2024-11-02 22:57:08,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:57:08,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:57:08,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:57:08,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:57:08,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:57:07" (1/3) ... [2024-11-02 22:57:08,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec9d73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:57:08, skipping insertion in model container [2024-11-02 22:57:08,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:07" (2/3) ... [2024-11-02 22:57:08,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec9d73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:57:08, skipping insertion in model container [2024-11-02 22:57:08,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:57:08" (3/3) ... [2024-11-02 22:57:08,342 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div.i [2024-11-02 22:57:08,359 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:57:08,359 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:57:08,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:57:08,421 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;@656b117e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:57:08,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:57:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:57:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 22:57:08,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:57:08,430 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 22:57:08,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:57:08,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:57:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2024-11-02 22:57:08,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:57:08,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561023611] [2024-11-02 22:57:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:57:08,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:57:08,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:57:08,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 22:57:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:57:09,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 22:57:09,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:57:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:57:09,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:57:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:57:11,233 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:57:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561023611] [2024-11-02 22:57:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [561023611] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:57:11,234 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:57:11,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2024-11-02 22:57:11,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076984614] [2024-11-02 22:57:11,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:57:11,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 22:57:11,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:57:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 22:57:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 22:57:11,268 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:57:16,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:57:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:57:16,968 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2024-11-02 22:57:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 22:57:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-02 22:57:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:57:16,975 INFO L225 Difference]: With dead ends: 21 [2024-11-02 22:57:16,975 INFO L226 Difference]: Without dead ends: 9 [2024-11-02 22:57:16,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 22:57:16,979 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-02 22:57:16,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-02 22:57:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-02 22:57:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-02 22:57:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:57:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-02 22:57:17,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2024-11-02 22:57:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:57:17,006 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-02 22:57:17,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:57:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-02 22:57:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 22:57:17,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:57:17,007 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-02 22:57:17,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 22:57:17,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:17,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:57:17,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:57:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2024-11-02 22:57:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:57:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777936599] [2024-11-02 22:57:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:57:17,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:57:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:57:17,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:57:17,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 22:57:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:57:27,295 WARN L253 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 22:57:27,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:57:37,657 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-11-02 22:57:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-02 22:57:37,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:57:50,648 WARN L873 $PredicateComparison]: unable to prove that (or (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) is different from true [2024-11-02 22:57:58,847 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-02 22:58:07,108 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-02 22:58:15,361 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-02 22:58:19,435 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|)))) is different from false [2024-11-02 22:58:23,502 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|)))) is different from true [2024-11-02 22:58:35,104 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-02 22:58:39,195 WARN L851 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2024-11-02 22:58:43,279 WARN L873 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2024-11-02 22:58:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-02 22:58:43,280 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:58:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777936599] [2024-11-02 22:58:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1777936599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:58:43,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:58:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2024-11-02 22:58:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169962667] [2024-11-02 22:58:43,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:58:43,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 22:58:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:58:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 22:58:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=41, Unknown=6, NotChecked=60, Total=132 [2024-11-02 22:58:43,284 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 22:58:47,422 WARN L873 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-11-02 22:58:54,492 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse1 |c_ULTIMATE.start_main_~x1~0#1|))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true