/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-28.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 19:49:51,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 19:49:51,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 19:49:51,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 19:49:51,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 19:49:51,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 19:49:51,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 19:49:51,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 19:49:51,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 19:49:51,760 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 19:49:51,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 19:49:51,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 19:49:51,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 19:49:51,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 19:49:51,761 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 19:49:51,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 19:49:51,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 19:49:51,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 19:49:51,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 19:49:51,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 19:49:51,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 19:49:51,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 19:49:51,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 19:49:51,764 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 19:49:51,764 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 19:49:51,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 19:49:51,764 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 19:49:51,765 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 19:49:51,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 19:49:51,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 19:49:51,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 19:49:51,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 19:49:51,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 19:49:51,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 19:49:51,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 19:49:51,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 19:49:51,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 19:49:51,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 19:49:51,767 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 19:49:51,767 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 19:49:51,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 19:49:51,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 19:49:51,768 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 19:49:51,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 19:49:51,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 19:49:51,768 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 19:49:51,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 19:49:51,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 19:49:51,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 19:49:51,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 19:49:51,975 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 19:49:51,976 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 19:49:51,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-28.i [2023-12-23 19:49:53,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 19:49:53,287 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 19:49:53,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-28.i [2023-12-23 19:49:53,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5de5eb46/9278707f2f2843b38ba4b4d1eef20d40/FLAGff2937f6b [2023-12-23 19:49:53,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5de5eb46/9278707f2f2843b38ba4b4d1eef20d40 [2023-12-23 19:49:53,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 19:49:53,304 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 19:49:53,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 19:49:53,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 19:49:53,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 19:49:53,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719c6e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53, skipping insertion in model container [2023-12-23 19:49:53,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,332 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 19:49:53,422 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-28.i[916,929] [2023-12-23 19:49:53,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 19:49:53,518 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 19:49:53,529 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-28.i[916,929] [2023-12-23 19:49:53,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 19:49:53,585 INFO L206 MainTranslator]: Completed translation [2023-12-23 19:49:53,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53 WrapperNode [2023-12-23 19:49:53,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 19:49:53,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 19:49:53,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 19:49:53,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 19:49:53,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,656 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-12-23 19:49:53,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 19:49:53,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 19:49:53,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 19:49:53,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 19:49:53,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,697 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]. [2023-12-23 19:49:53,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 19:49:53,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 19:49:53,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 19:49:53,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 19:49:53,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (1/1) ... [2023-12-23 19:49:53,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 19:49:53,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 19:49:53,771 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) [2023-12-23 19:49:53,784 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 [2023-12-23 19:49:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 19:49:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 19:49:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 19:49:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 19:49:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 19:49:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 19:49:53,849 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 19:49:53,851 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 19:49:54,009 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 19:49:54,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 19:49:54,066 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 19:49:54,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:54 BoogieIcfgContainer [2023-12-23 19:49:54,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 19:49:54,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 19:49:54,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 19:49:54,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 19:49:54,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:49:53" (1/3) ... [2023-12-23 19:49:54,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22728989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:49:54, skipping insertion in model container [2023-12-23 19:49:54,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:53" (2/3) ... [2023-12-23 19:49:54,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22728989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:49:54, skipping insertion in model container [2023-12-23 19:49:54,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:54" (3/3) ... [2023-12-23 19:49:54,073 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-28.i [2023-12-23 19:49:54,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 19:49:54,085 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 19:49:54,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 19:49:54,119 INFO L357 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, mHoare=true, 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;@6d308503, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 19:49:54,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 19:49:54,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-23 19:49:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-23 19:49:54,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:49:54,131 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:49:54,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:49:54,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:49:54,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1980092105, now seen corresponding path program 1 times [2023-12-23 19:49:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:49:54,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143001690] [2023-12-23 19:49:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:49:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 19:49:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:49:54,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 19:49:54,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 19:49:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:49:54,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 19:49:54,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 19:49:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-23 19:49:54,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 19:49:54,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 19:49:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143001690] [2023-12-23 19:49:54,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143001690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 19:49:54,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 19:49:54,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 19:49:54,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720936249] [2023-12-23 19:49:54,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 19:49:54,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 19:49:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 19:49:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 19:49:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 19:49:54,350 INFO L87 Difference]: Start difference. First operand has 45 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-23 19:49:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 19:49:54,379 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2023-12-23 19:49:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 19:49:54,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 109 [2023-12-23 19:49:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 19:49:54,387 INFO L225 Difference]: With dead ends: 87 [2023-12-23 19:49:54,387 INFO L226 Difference]: Without dead ends: 43 [2023-12-23 19:49:54,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 19:49:54,391 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 19:49:54,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 19:49:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-23 19:49:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-23 19:49:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-23 19:49:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2023-12-23 19:49:54,421 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 63 transitions. Word has length 109 [2023-12-23 19:49:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 19:49:54,421 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 63 transitions. [2023-12-23 19:49:54,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-23 19:49:54,422 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 63 transitions. [2023-12-23 19:49:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-23 19:49:54,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:49:54,424 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:49:54,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 19:49:54,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 19:49:54,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:49:54,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:49:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1606137225, now seen corresponding path program 1 times [2023-12-23 19:49:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:49:54,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843726448] [2023-12-23 19:49:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:49:54,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 19:49:54,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:49:54,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 19:49:54,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 19:49:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:49:54,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 19:49:54,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 19:49:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 293 proven. 33 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-23 19:49:54,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 19:49:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-23 19:49:55,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 19:49:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843726448] [2023-12-23 19:49:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843726448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 19:49:55,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 19:49:55,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-23 19:49:55,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704750983] [2023-12-23 19:49:55,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 19:49:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-23 19:49:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 19:49:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-23 19:49:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-23 19:49:55,062 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-23 19:49:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 19:49:55,308 INFO L93 Difference]: Finished difference Result 91 states and 130 transitions. [2023-12-23 19:49:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 19:49:55,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 109 [2023-12-23 19:49:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 19:49:55,315 INFO L225 Difference]: With dead ends: 91 [2023-12-23 19:49:55,315 INFO L226 Difference]: Without dead ends: 49 [2023-12-23 19:49:55,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-23 19:49:55,317 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 19:49:55,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 90 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 19:49:55,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-23 19:49:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2023-12-23 19:49:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-23 19:49:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2023-12-23 19:49:55,327 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 109 [2023-12-23 19:49:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 19:49:55,327 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2023-12-23 19:49:55,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-23 19:49:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2023-12-23 19:49:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-23 19:49:55,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 19:49:55,332 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 19:49:55,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-23 19:49:55,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 19:49:55,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 19:49:55,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 19:49:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1879483445, now seen corresponding path program 1 times [2023-12-23 19:49:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 19:49:55,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105807971] [2023-12-23 19:49:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 19:49:55,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 19:49:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 19:49:55,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 19:49:55,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 19:49:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 19:49:55,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-23 19:49:55,614 INFO L285 TraceCheckSpWp]: Computing forward predicates...