/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_fillercode_fillercodestructure_filler-ps-ci_file-41.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 14:15:02,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 14:15:02,519 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 14:15:02,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 14:15:02,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 14:15:02,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 14:15:02,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 14:15:02,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 14:15:02,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 14:15:02,537 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 14:15:02,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 14:15:02,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 14:15:02,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 14:15:02,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 14:15:02,539 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 14:15:02,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 14:15:02,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 14:15:02,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 14:15:02,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 14:15:02,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 14:15:02,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 14:15:02,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 14:15:02,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 14:15:02,540 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 14:15:02,541 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 14:15:02,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 14:15:02,541 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 14:15:02,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 14:15:02,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 14:15:02,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 14:15:02,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 14:15:02,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 14:15:02,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 14:15:02,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 14:15:02,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 14:15:02,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 14:15:02,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 14:15:02,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 14:15:02,543 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 14:15:02,543 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 14:15:02,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 14:15:02,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 14:15:02,544 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 14:15:02,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 14:15:02,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 14:15:02,544 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 14:15:02,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 14:15:02,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 14:15:02,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 14:15:02,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 14:15:02,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 14:15:02,748 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 14:15:02,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-41.i [2023-12-23 14:15:03,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 14:15:03,918 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 14:15:03,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-41.i [2023-12-23 14:15:03,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58873113a/8d60d9e2dd8b47feb2a29f1997799215/FLAG04abe8581 [2023-12-23 14:15:03,934 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58873113a/8d60d9e2dd8b47feb2a29f1997799215 [2023-12-23 14:15:03,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 14:15:03,937 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 14:15:03,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 14:15:03,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 14:15:03,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 14:15:03,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:15:03" (1/1) ... [2023-12-23 14:15:03,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a008c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:03, skipping insertion in model container [2023-12-23 14:15:03,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:15:03" (1/1) ... [2023-12-23 14:15:03,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 14:15:04,102 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_fillercode_fillercodestructure_filler-ps-ci_file-41.i[919,932] [2023-12-23 14:15:04,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 14:15:04,175 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 14:15:04,184 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_fillercode_fillercodestructure_filler-ps-ci_file-41.i[919,932] [2023-12-23 14:15:04,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 14:15:04,220 INFO L206 MainTranslator]: Completed translation [2023-12-23 14:15:04,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04 WrapperNode [2023-12-23 14:15:04,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 14:15:04,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 14:15:04,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 14:15:04,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 14:15:04,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,256 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 172 [2023-12-23 14:15:04,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 14:15:04,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 14:15:04,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 14:15:04,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 14:15:04,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,288 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 14:15:04,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 14:15:04,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 14:15:04,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 14:15:04,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 14:15:04,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (1/1) ... [2023-12-23 14:15:04,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 14:15:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 14:15:04,333 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 14:15:04,348 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 14:15:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 14:15:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 14:15:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 14:15:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 14:15:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 14:15:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 14:15:04,431 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 14:15:04,433 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 14:15:09,605 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 14:15:09,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 14:15:09,631 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 14:15:09,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:15:09 BoogieIcfgContainer [2023-12-23 14:15:09,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 14:15:09,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 14:15:09,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 14:15:09,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 14:15:09,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:15:03" (1/3) ... [2023-12-23 14:15:09,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e172a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:15:09, skipping insertion in model container [2023-12-23 14:15:09,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:15:04" (2/3) ... [2023-12-23 14:15:09,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e172a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:15:09, skipping insertion in model container [2023-12-23 14:15:09,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:15:09" (3/3) ... [2023-12-23 14:15:09,636 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-41.i [2023-12-23 14:15:09,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 14:15:09,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 14:15:09,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 14:15:09,678 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;@10081c2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 14:15:09,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 14:15:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 49 states have internal predecessors, (73), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-23 14:15:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-23 14:15:09,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 14:15:09,690 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:09,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 14:15:09,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 14:15:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash 849420552, now seen corresponding path program 1 times [2023-12-23 14:15:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 14:15:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230672148] [2023-12-23 14:15:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 14:15:09,702 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 14:15:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 14:15:09,703 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 14:15:09,706 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 14:15:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 14:15:10,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 14:15:10,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 14:15:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-23 14:15:10,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 14:15:10,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 14:15:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230672148] [2023-12-23 14:15:10,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230672148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 14:15:10,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 14:15:10,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 14:15:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638189206] [2023-12-23 14:15:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 14:15:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 14:15:10,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 14:15:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 14:15:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 14:15:10,219 INFO L87 Difference]: Start difference. First operand has 70 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 49 states have internal predecessors, (73), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-23 14:15:11,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 14:15:11,789 INFO L93 Difference]: Finished difference Result 137 states and 239 transitions. [2023-12-23 14:15:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 14:15:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 131 [2023-12-23 14:15:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 14:15:11,826 INFO L225 Difference]: With dead ends: 137 [2023-12-23 14:15:11,826 INFO L226 Difference]: Without dead ends: 68 [2023-12-23 14:15:11,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 14:15:11,830 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-23 14:15:11,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-23 14:15:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-23 14:15:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-23 14:15:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.425531914893617) internal successors, (67), 47 states have internal predecessors, (67), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-23 14:15:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 105 transitions. [2023-12-23 14:15:11,859 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 105 transitions. Word has length 131 [2023-12-23 14:15:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 14:15:11,859 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 105 transitions. [2023-12-23 14:15:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-23 14:15:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 105 transitions. [2023-12-23 14:15:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-23 14:15:11,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 14:15:11,861 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:11,875 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 14:15:12,072 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 14:15:12,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 14:15:12,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 14:15:12,073 INFO L85 PathProgramCache]: Analyzing trace with hash 644712982, now seen corresponding path program 1 times [2023-12-23 14:15:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 14:15:12,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249008931] [2023-12-23 14:15:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 14:15:12,074 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 14:15:12,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 14:15:12,075 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 14:15:12,078 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 14:15:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 14:15:12,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 14:15:12,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 14:15:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-23 14:15:13,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 14:15:13,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 14:15:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249008931] [2023-12-23 14:15:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249008931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 14:15:13,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 14:15:13,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 14:15:13,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269660219] [2023-12-23 14:15:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 14:15:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 14:15:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 14:15:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 14:15:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 14:15:13,011 INFO L87 Difference]: Start difference. First operand 68 states and 105 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 14:15:16,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:18,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 14:15:20,258 INFO L93 Difference]: Finished difference Result 201 states and 311 transitions. [2023-12-23 14:15:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 14:15:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 131 [2023-12-23 14:15:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 14:15:20,274 INFO L225 Difference]: With dead ends: 201 [2023-12-23 14:15:20,274 INFO L226 Difference]: Without dead ends: 134 [2023-12-23 14:15:20,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 14:15:20,275 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 40 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-23 14:15:20,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 183 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-23 14:15:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-23 14:15:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2023-12-23 14:15:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-23 14:15:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 201 transitions. [2023-12-23 14:15:20,297 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 201 transitions. Word has length 131 [2023-12-23 14:15:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 14:15:20,298 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 201 transitions. [2023-12-23 14:15:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 14:15:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 201 transitions. [2023-12-23 14:15:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-23 14:15:20,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 14:15:20,299 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:20,312 INFO L540 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)] Forceful destruction successful, exit code 0 [2023-12-23 14:15:20,500 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 14:15:20,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 14:15:20,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 14:15:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1274117405, now seen corresponding path program 1 times [2023-12-23 14:15:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 14:15:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914604330] [2023-12-23 14:15:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 14:15:20,502 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 14:15:20,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 14:15:20,503 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 14:15:20,504 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 14:15:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 14:15:20,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 14:15:20,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 14:15:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 168 proven. 90 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-12-23 14:15:21,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 14:15:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-23 14:15:22,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 14:15:22,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914604330] [2023-12-23 14:15:22,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914604330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 14:15:22,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 14:15:22,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-23 14:15:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566864896] [2023-12-23 14:15:22,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 14:15:22,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-23 14:15:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 14:15:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-23 14:15:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-23 14:15:22,036 INFO L87 Difference]: Start difference. First operand 131 states and 201 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 3 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-23 14:15:24,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 14:15:26,807 INFO L93 Difference]: Finished difference Result 491 states and 717 transitions. [2023-12-23 14:15:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-23 14:15:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 3 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 132 [2023-12-23 14:15:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 14:15:26,824 INFO L225 Difference]: With dead ends: 491 [2023-12-23 14:15:26,824 INFO L226 Difference]: Without dead ends: 361 [2023-12-23 14:15:26,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2023-12-23 14:15:26,826 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 290 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-23 14:15:26,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 405 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-23 14:15:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-23 14:15:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 150. [2023-12-23 14:15:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 105 states have (on average 1.2571428571428571) internal successors, (132), 105 states have internal predecessors, (132), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-23 14:15:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2023-12-23 14:15:26,858 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 132 [2023-12-23 14:15:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 14:15:26,859 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2023-12-23 14:15:26,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 3 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-23 14:15:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2023-12-23 14:15:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-23 14:15:26,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 14:15:26,867 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:26,884 INFO L540 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)] Forceful destruction successful, exit code 0 [2023-12-23 14:15:27,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 14:15:27,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 14:15:27,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 14:15:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1667144415, now seen corresponding path program 1 times [2023-12-23 14:15:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 14:15:27,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186782249] [2023-12-23 14:15:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 14:15:27,074 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 14:15:27,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 14:15:27,075 INFO L229 MonitoredProcess]: Starting monitored process 5 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 14:15:27,076 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 (5)] Waiting until timeout for monitored process [2023-12-23 14:15:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 14:15:27,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 14:15:27,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 14:15:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 357 proven. 36 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-23 14:15:28,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 14:15:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-23 14:15:35,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 14:15:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186782249] [2023-12-23 14:15:35,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186782249] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 14:15:35,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 14:15:35,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2023-12-23 14:15:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163346442] [2023-12-23 14:15:35,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 14:15:35,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-23 14:15:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 14:15:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-23 14:15:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-12-23 14:15:35,253 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 15 states have internal predecessors, (89), 5 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2023-12-23 14:15:38,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:43,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:53,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 14:15:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 14:15:59,004 INFO L93 Difference]: Finished difference Result 715 states and 957 transitions. [2023-12-23 14:15:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-23 14:15:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 15 states have internal predecessors, (89), 5 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) Word has length 132 [2023-12-23 14:15:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 14:15:59,018 INFO L225 Difference]: With dead ends: 715 [2023-12-23 14:15:59,018 INFO L226 Difference]: Without dead ends: 566 [2023-12-23 14:15:59,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2023-12-23 14:15:59,020 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 428 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-12-23 14:15:59,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 485 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 21.7s Time] [2023-12-23 14:15:59,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-12-23 14:15:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 539. [2023-12-23 14:15:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 381 states have (on average 1.230971128608924) internal successors, (469), 386 states have internal predecessors, (469), 125 states have call successors, (125), 32 states have call predecessors, (125), 32 states have return successors, (125), 120 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-23 14:15:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 719 transitions. [2023-12-23 14:15:59,074 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 719 transitions. Word has length 132 [2023-12-23 14:15:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 14:15:59,074 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 719 transitions. [2023-12-23 14:15:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 15 states have internal predecessors, (89), 5 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2023-12-23 14:15:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 719 transitions. [2023-12-23 14:15:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-23 14:15:59,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 14:15:59,075 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:59,094 INFO L540 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 (5)] Forceful destruction successful, exit code 0 [2023-12-23 14:15:59,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 14:15:59,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 14:15:59,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 14:15:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash 141576325, now seen corresponding path program 1 times [2023-12-23 14:15:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 14:15:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384029470] [2023-12-23 14:15:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 14:15:59,286 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 14:15:59,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 14:15:59,287 INFO L229 MonitoredProcess]: Starting monitored process 6 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 14:15:59,288 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 (6)] Waiting until timeout for monitored process [2023-12-23 14:15:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 14:15:59,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-23 14:15:59,745 INFO L285 TraceCheckSpWp]: Computing forward predicates...