/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-69.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:11:47,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:11:47,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 12:11:47,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:11:47,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:11:47,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:11:47,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:11:47,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:11:47,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:11:47,513 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:11:47,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:11:47,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:11:47,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:11:47,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:11:47,516 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:11:47,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:11:47,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:11:47,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:11:47,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:11:47,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:11:47,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:11:47,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:11:47,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:11:47,523 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:11:47,523 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:11:47,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:11:47,523 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:11:47,524 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:11:47,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:11:47,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:11:47,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:11:47,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:11:47,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:11:47,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:11:47,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:11:47,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:11:47,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:11:47,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:11:47,528 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:11:47,529 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:11:47,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:11:47,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:11:47,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:11:47,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:11:47,530 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:11:47,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:11:47,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:11:47,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:11:47,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:11:47,800 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:11:47,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-69.i [2024-11-03 12:11:49,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:11:49,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:11:49,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-69.i [2024-11-03 12:11:49,560 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc8207c33/ba253316daec4a1c93e9addf4be9a87f/FLAG522623bcf [2024-11-03 12:11:49,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc8207c33/ba253316daec4a1c93e9addf4be9a87f [2024-11-03 12:11:49,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:11:49,933 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:11:49,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:11:49,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:11:49,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:11:49,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:11:49" (1/1) ... [2024-11-03 12:11:49,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12163495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:49, skipping insertion in model container [2024-11-03 12:11:49,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:11:49" (1/1) ... [2024-11-03 12:11:49,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:11:50,136 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-69.i[917,930] [2024-11-03 12:11:50,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:11:50,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:11:50,208 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-69.i[917,930] [2024-11-03 12:11:50,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:11:50,241 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:11:50,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50 WrapperNode [2024-11-03 12:11:50,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:11:50,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:11:50,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:11:50,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:11:50,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,280 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 106 [2024-11-03 12:11:50,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:11:50,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:11:50,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:11:50,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:11:50,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,316 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 12:11:50,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:11:50,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:11:50,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:11:50,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:11:50,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (1/1) ... [2024-11-03 12:11:50,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:11:50,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:11:50,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 12:11:50,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 12:11:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:11:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:11:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:11:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:11:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:11:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:11:50,455 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:11:50,457 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:11:50,735 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-03 12:11:50,735 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:11:50,748 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:11:50,749 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:11:50,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:11:50 BoogieIcfgContainer [2024-11-03 12:11:50,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:11:50,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:11:50,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:11:50,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:11:50,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:11:49" (1/3) ... [2024-11-03 12:11:50,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59917405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:11:50, skipping insertion in model container [2024-11-03 12:11:50,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:11:50" (2/3) ... [2024-11-03 12:11:50,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59917405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:11:50, skipping insertion in model container [2024-11-03 12:11:50,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:11:50" (3/3) ... [2024-11-03 12:11:50,758 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-69.i [2024-11-03 12:11:50,776 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:11:50,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:11:50,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:11:50,839 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44cf2a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:11:50,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:11:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 35 states have internal predecessors, (47), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-03 12:11:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-03 12:11:50,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:11:50,853 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:11:50,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:11:50,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:11:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 18237889, now seen corresponding path program 1 times [2024-11-03 12:11:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:11:50,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233366332] [2024-11-03 12:11:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:11:50,869 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:11:50,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:11:50,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:11:50,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:11:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:11:51,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:11:51,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:11:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-03 12:11:51,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:11:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-03 12:11:51,239 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:11:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233366332] [2024-11-03 12:11:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [233366332] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:11:51,240 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:11:51,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:11:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777553472] [2024-11-03 12:11:51,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:11:51,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:11:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:11:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:11:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:11:51,273 INFO L87 Difference]: Start difference. First operand has 52 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 35 states have internal predecessors, (47), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-03 12:11:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:11:51,303 INFO L93 Difference]: Finished difference Result 97 states and 163 transitions. [2024-11-03 12:11:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:11:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 97 [2024-11-03 12:11:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:11:51,316 INFO L225 Difference]: With dead ends: 97 [2024-11-03 12:11:51,317 INFO L226 Difference]: Without dead ends: 48 [2024-11-03 12:11:51,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:11:51,323 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:11:51,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:11:51,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-03 12:11:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-03 12:11:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-03 12:11:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2024-11-03 12:11:51,358 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 97 [2024-11-03 12:11:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:11:51,359 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2024-11-03 12:11:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-03 12:11:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2024-11-03 12:11:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-03 12:11:51,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:11:51,364 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:11:51,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:11:51,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:11:51,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:11:51,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:11:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1234104317, now seen corresponding path program 1 times [2024-11-03 12:11:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:11:51,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633881626] [2024-11-03 12:11:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:11:51,569 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:11:51,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:11:51,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:11:51,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:11:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:11:51,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 12:11:51,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:12:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-03 12:12:13,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:12:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-03 12:12:20,646 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:12:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633881626] [2024-11-03 12:12:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1633881626] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:12:20,646 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:12:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 12] imperfect sequences [] total 22 [2024-11-03 12:12:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702305431] [2024-11-03 12:12:20,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:12:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 12:12:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:12:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 12:12:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-03 12:12:20,650 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-03 12:12:40,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:12:47,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:12:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:12:51,307 INFO L93 Difference]: Finished difference Result 158 states and 220 transitions. [2024-11-03 12:12:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-03 12:12:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 97 [2024-11-03 12:12:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:12:51,310 INFO L225 Difference]: With dead ends: 158 [2024-11-03 12:12:51,310 INFO L226 Difference]: Without dead ends: 156 [2024-11-03 12:12:51,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=436, Invalid=1370, Unknown=0, NotChecked=0, Total=1806 [2024-11-03 12:12:51,313 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 302 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 109 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2024-11-03 12:12:51,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 372 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 703 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2024-11-03 12:12:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-03 12:12:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 119. [2024-11-03 12:12:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-03 12:12:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 171 transitions. [2024-11-03 12:12:51,357 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 171 transitions. Word has length 97 [2024-11-03 12:12:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:12:51,358 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 171 transitions. [2024-11-03 12:12:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-03 12:12:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 171 transitions. [2024-11-03 12:12:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-03 12:12:51,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:12:51,363 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:12:51,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 12:12:51,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:12:51,565 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:12:51,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:12:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash -868023798, now seen corresponding path program 1 times [2024-11-03 12:12:51,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:12:51,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381391930] [2024-11-03 12:12:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:12:51,566 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:12:51,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:12:51,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:12:51,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:12:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:12:51,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 12:12:51,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:13:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-03 12:13:02,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:13:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-03 12:13:11,844 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:13:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381391930] [2024-11-03 12:13:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1381391930] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:13:11,845 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:13:11,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2024-11-03 12:13:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234890205] [2024-11-03 12:13:11,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:13:11,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 12:13:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:13:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 12:13:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-03 12:13:11,847 INFO L87 Difference]: Start difference. First operand 119 states and 171 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-03 12:13:25,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []