/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_fillercodesize_ps-cn-25_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:18:20,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:18:20,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:18:20,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:18:20,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:18:20,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:18:20,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:18:20,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:18:20,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:18:20,749 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:18:20,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:18:20,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:18:20,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:18:20,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:18:20,751 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:18:20,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:18:20,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:18:20,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:18:20,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:18:20,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:18:20,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:18:20,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:18:20,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:18:20,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:18:20,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:18:20,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:18:20,755 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:18:20,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:18:20,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:18:20,756 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:18:20,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:18:20,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:18:20,756 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:18:20,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:18:20,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:18:20,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:18:20,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:18:20,975 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:18:20,975 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:18:20,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2023-12-16 11:18:22,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:18:22,293 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:18:22,294 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2023-12-16 11:18:22,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1517b14/f4940ce7af4a43f1b0a6ebbfed95d65b/FLAGa26216a08 [2023-12-16 11:18:22,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1517b14/f4940ce7af4a43f1b0a6ebbfed95d65b [2023-12-16 11:18:22,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:18:22,339 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:18:22,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:18:22,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:18:22,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:18:22,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcd6190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22, skipping insertion in model container [2023-12-16 11:18:22,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:18:22,499 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_fillercodesize_ps-cn-25_file-81.i[915,928] [2023-12-16 11:18:22,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:18:22,562 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:18:22,573 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_fillercodesize_ps-cn-25_file-81.i[915,928] [2023-12-16 11:18:22,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:18:22,625 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:18:22,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22 WrapperNode [2023-12-16 11:18:22,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:18:22,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:18:22,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:18:22,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:18:22,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,673 INFO L138 Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 210 [2023-12-16 11:18:22,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:18:22,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:18:22,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:18:22,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:18:22,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,718 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]. [2023-12-16 11:18:22,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:18:22,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:18:22,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:18:22,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:18:22,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (1/1) ... [2023-12-16 11:18:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:18:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:18:22,805 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) [2023-12-16 11:18:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:18:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:18:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:18:22,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:18:22,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:18:22,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:18:22,825 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 [2023-12-16 11:18:22,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:18:22,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:18:23,291 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:18:23,353 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:18:23,354 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:18:23,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:18:23 BoogieIcfgContainer [2023-12-16 11:18:23,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:18:23,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:18:23,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:18:23,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:18:23,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:18:22" (1/3) ... [2023-12-16 11:18:23,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79216d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:18:23, skipping insertion in model container [2023-12-16 11:18:23,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:18:22" (2/3) ... [2023-12-16 11:18:23,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79216d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:18:23, skipping insertion in model container [2023-12-16 11:18:23,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:18:23" (3/3) ... [2023-12-16 11:18:23,361 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2023-12-16 11:18:23,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:18:23,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:18:23,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:18:23,438 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;@3be26241, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:18:23,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:18:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 11:18:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-16 11:18:23,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:18:23,467 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:18:23,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:18:23,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:18:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash 588746764, now seen corresponding path program 1 times [2023-12-16 11:18:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:18:23,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294752974] [2023-12-16 11:18:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:18:23,488 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 [2023-12-16 11:18:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:18:23,491 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) [2023-12-16 11:18:23,543 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 [2023-12-16 11:18:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:18:23,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:18:23,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:18:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1424 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2023-12-16 11:18:23,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:18:23,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:18:23,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294752974] [2023-12-16 11:18:23,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294752974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:18:23,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:18:23,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:18:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806795276] [2023-12-16 11:18:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:18:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:18:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:18:23,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:18:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:18:23,890 INFO L87 Difference]: Start difference. First operand has 90 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-16 11:18:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:18:23,948 INFO L93 Difference]: Finished difference Result 177 states and 329 transitions. [2023-12-16 11:18:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:18:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 243 [2023-12-16 11:18:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:18:23,962 INFO L225 Difference]: With dead ends: 177 [2023-12-16 11:18:23,962 INFO L226 Difference]: Without dead ends: 88 [2023-12-16 11:18:23,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:18:23,969 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:18:23,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 11:18:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-16 11:18:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-16 11:18:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 11:18:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 140 transitions. [2023-12-16 11:18:24,015 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 140 transitions. Word has length 243 [2023-12-16 11:18:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:18:24,016 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 140 transitions. [2023-12-16 11:18:24,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-16 11:18:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 140 transitions. [2023-12-16 11:18:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-16 11:18:24,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:18:24,020 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:18:24,028 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 [2023-12-16 11:18:24,228 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 [2023-12-16 11:18:24,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:18:24,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:18:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1539791346, now seen corresponding path program 1 times [2023-12-16 11:18:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:18:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385786835] [2023-12-16 11:18:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:18:24,231 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 [2023-12-16 11:18:24,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:18:24,232 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) [2023-12-16 11:18:24,244 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 [2023-12-16 11:18:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:18:24,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 11:18:24,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:18:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 40 proven. 120 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-16 11:18:25,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:18:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2023-12-16 11:18:25,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:18:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385786835] [2023-12-16 11:18:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385786835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:18:25,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:18:25,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-16 11:18:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945338766] [2023-12-16 11:18:25,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:18:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 11:18:25,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:18:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 11:18:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-16 11:18:25,730 INFO L87 Difference]: Start difference. First operand 88 states and 140 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 4 states have call successors, (82), 3 states have call predecessors, (82), 4 states have return successors, (82), 2 states have call predecessors, (82), 4 states have call successors, (82) [2023-12-16 11:18:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:18:26,879 INFO L93 Difference]: Finished difference Result 362 states and 565 transitions. [2023-12-16 11:18:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 11:18:26,884 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 4 states have call successors, (82), 3 states have call predecessors, (82), 4 states have return successors, (82), 2 states have call predecessors, (82), 4 states have call successors, (82) Word has length 243 [2023-12-16 11:18:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:18:26,887 INFO L225 Difference]: With dead ends: 362 [2023-12-16 11:18:26,887 INFO L226 Difference]: Without dead ends: 275 [2023-12-16 11:18:26,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2023-12-16 11:18:26,889 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 425 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 11:18:26,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 576 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 11:18:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-16 11:18:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 92. [2023-12-16 11:18:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 11:18:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 142 transitions. [2023-12-16 11:18:26,915 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 142 transitions. Word has length 243 [2023-12-16 11:18:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:18:26,916 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 142 transitions. [2023-12-16 11:18:26,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 4 states have call successors, (82), 3 states have call predecessors, (82), 4 states have return successors, (82), 2 states have call predecessors, (82), 4 states have call successors, (82) [2023-12-16 11:18:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 142 transitions. [2023-12-16 11:18:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-16 11:18:26,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:18:26,919 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:18:26,945 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 [2023-12-16 11:18:27,128 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 [2023-12-16 11:18:27,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:18:27,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:18:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1932818356, now seen corresponding path program 1 times [2023-12-16 11:18:27,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:18:27,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320999478] [2023-12-16 11:18:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:18:27,130 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 [2023-12-16 11:18:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:18:27,148 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) [2023-12-16 11:18:27,149 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 [2023-12-16 11:18:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:18:27,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:18:27,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:18:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1080 proven. 96 refuted. 0 times theorem prover too weak. 2104 trivial. 0 not checked. [2023-12-16 11:18:27,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:18:27,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:18:27,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320999478] [2023-12-16 11:18:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320999478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:18:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108975473] [2023-12-16 11:18:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:18:27,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:18:27,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:18:27,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:18:27,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 11:18:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:18:27,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:18:27,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:18:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1080 proven. 96 refuted. 0 times theorem prover too weak. 2104 trivial. 0 not checked. [2023-12-16 11:18:28,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:18:28,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [108975473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:18:28,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:18:28,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-16 11:18:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738953952] [2023-12-16 11:18:28,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:18:28,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 11:18:28,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:18:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 11:18:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:18:28,216 INFO L87 Difference]: Start difference. First operand 92 states and 142 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-16 11:18:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:18:28,903 INFO L93 Difference]: Finished difference Result 279 states and 425 transitions. [2023-12-16 11:18:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 11:18:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 243 [2023-12-16 11:18:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:18:28,906 INFO L225 Difference]: With dead ends: 279 [2023-12-16 11:18:28,906 INFO L226 Difference]: Without dead ends: 188 [2023-12-16 11:18:28,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-16 11:18:28,907 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 95 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:18:28,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 437 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 11:18:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-16 11:18:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 96. [2023-12-16 11:18:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 11:18:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 144 transitions. [2023-12-16 11:18:28,929 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 144 transitions. Word has length 243 [2023-12-16 11:18:28,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:18:28,929 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 144 transitions. [2023-12-16 11:18:28,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-16 11:18:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 144 transitions. [2023-12-16 11:18:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 11:18:28,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:18:28,931 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:18:28,952 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 (4)] Ended with exit code 0 [2023-12-16 11:18:29,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:18:29,342 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:18:29,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:18:29,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:18:29,343 INFO L85 PathProgramCache]: Analyzing trace with hash 210551998, now seen corresponding path program 1 times [2023-12-16 11:18:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:18:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890725750] [2023-12-16 11:18:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:18:29,344 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 [2023-12-16 11:18:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:18:29,345 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) [2023-12-16 11:18:29,354 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 [2023-12-16 11:18:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:18:29,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:18:29,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:18:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 750 proven. 105 refuted. 0 times theorem prover too weak. 2425 trivial. 0 not checked. [2023-12-16 11:18:29,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:18:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-16 11:18:29,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:18:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890725750] [2023-12-16 11:18:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890725750] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 11:18:29,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:18:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-16 11:18:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211852324] [2023-12-16 11:18:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:18:29,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:18:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:18:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:18:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:18:29,790 INFO L87 Difference]: Start difference. First operand 96 states and 144 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-16 11:18:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:18:29,907 INFO L93 Difference]: Finished difference Result 219 states and 321 transitions. [2023-12-16 11:18:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:18:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 244 [2023-12-16 11:18:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:18:29,909 INFO L225 Difference]: With dead ends: 219 [2023-12-16 11:18:29,909 INFO L226 Difference]: Without dead ends: 124 [2023-12-16 11:18:29,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:18:29,910 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 49 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 11:18:29,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 266 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 11:18:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-16 11:18:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2023-12-16 11:18:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 70 states have (on average 1.2) internal successors, (84), 71 states have internal predecessors, (84), 45 states have call successors, (45), 5 states have call predecessors, (45), 5 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 11:18:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2023-12-16 11:18:29,926 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 244 [2023-12-16 11:18:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:18:29,940 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 174 transitions. [2023-12-16 11:18:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-16 11:18:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 174 transitions. [2023-12-16 11:18:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 11:18:29,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:18:29,942 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:18:29,969 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 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:18:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2023-12-16 11:18:30,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:18:30,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:18:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash 210611580, now seen corresponding path program 1 times [2023-12-16 11:18:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:18:30,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340164309] [2023-12-16 11:18:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:18:30,150 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 [2023-12-16 11:18:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:18:30,151 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-16 11:18:30,152 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 (7)] Waiting until timeout for monitored process [2023-12-16 11:18:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:18:30,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 11:18:30,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:19:21,917 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:19:21,917 WARN L340 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:19:22,939 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 (7)] Ended with exit code 0 [2023-12-16 11:19:22,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown