/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 15:01:18,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 15:01:18,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 15:01:18,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 15:01:18,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 15:01:18,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 15:01:18,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 15:01:18,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 15:01:18,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 15:01:18,822 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 15:01:18,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 15:01:18,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 15:01:18,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 15:01:18,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 15:01:18,825 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 15:01:18,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 15:01:18,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 15:01:18,826 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 15:01:18,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 15:01:18,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 15:01:18,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 15:01:18,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 15:01:18,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 15:01:18,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 15:01:18,828 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 15:01:18,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 15:01:18,828 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 15:01:18,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 15:01:18,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 15:01:18,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 15:01:18,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 15:01:18,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 15:01:18,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 15:01:18,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 15:01:18,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 15:01:18,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 15:01:18,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 15:01:18,830 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 15:01:18,831 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 15:01:18,831 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 15:01:18,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 15:01:18,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 15:01:18,831 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 15:01:18,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 15:01:18,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 15:01:18,832 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 15:01:18,832 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 15:01:19,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 15:01:19,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 15:01:19,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 15:01:19,076 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 15:01:19,076 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 15:01:19,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-19.i [2023-12-23 15:01:20,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 15:01:20,393 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 15:01:20,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-19.i [2023-12-23 15:01:20,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb54d5a9/f121b0a4f0994d4c80c55c322bb75a7a/FLAG023d29ce8 [2023-12-23 15:01:20,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb54d5a9/f121b0a4f0994d4c80c55c322bb75a7a [2023-12-23 15:01:20,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 15:01:20,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 15:01:20,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 15:01:20,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 15:01:20,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 15:01:20,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd4b172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20, skipping insertion in model container [2023-12-23 15:01:20,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 15:01:20,569 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-19.i[919,932] [2023-12-23 15:01:20,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 15:01:20,665 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 15:01:20,685 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-19.i[919,932] [2023-12-23 15:01:20,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 15:01:20,761 INFO L206 MainTranslator]: Completed translation [2023-12-23 15:01:20,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20 WrapperNode [2023-12-23 15:01:20,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 15:01:20,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 15:01:20,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 15:01:20,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 15:01:20,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,819 INFO L138 Inliner]: procedures = 27, calls = 59, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 245 [2023-12-23 15:01:20,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 15:01:20,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 15:01:20,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 15:01:20,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 15:01:20,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,850 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 15:01:20,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 15:01:20,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 15:01:20,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 15:01:20,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 15:01:20,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (1/1) ... [2023-12-23 15:01:20,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 15:01:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 15:01:20,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 15:01:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 15:01:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 15:01:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 15:01:20,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 15:01:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 15:01:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 15:01:20,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 15:01:21,070 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 15:01:21,072 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 15:01:36,933 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 15:01:36,986 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 15:01:36,987 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 15:01:36,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:01:36 BoogieIcfgContainer [2023-12-23 15:01:36,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 15:01:36,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 15:01:36,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 15:01:36,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 15:01:36,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:01:20" (1/3) ... [2023-12-23 15:01:36,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf5932a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:01:36, skipping insertion in model container [2023-12-23 15:01:36,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:01:20" (2/3) ... [2023-12-23 15:01:36,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf5932a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:01:36, skipping insertion in model container [2023-12-23 15:01:36,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:01:36" (3/3) ... [2023-12-23 15:01:36,996 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-19.i [2023-12-23 15:01:37,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 15:01:37,008 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 15:01:37,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 15:01:37,052 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;@4c99b02f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 15:01:37,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 15:01:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-23 15:01:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-23 15:01:37,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:01:37,077 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:01:37,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:01:37,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:01:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash 695530431, now seen corresponding path program 1 times [2023-12-23 15:01:37,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:01:37,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727086200] [2023-12-23 15:01:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:01:37,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:01:37,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:01:37,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:01:37,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 15:01:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:01:38,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 15:01:38,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:01:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 1674 proven. 0 refuted. 0 times theorem prover too weak. 2466 trivial. 0 not checked. [2023-12-23 15:01:38,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:01:38,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:01:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727086200] [2023-12-23 15:01:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727086200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:01:38,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:01:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 15:01:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248462101] [2023-12-23 15:01:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:01:38,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 15:01:38,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:01:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 15:01:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 15:01:38,376 INFO L87 Difference]: Start difference. First operand has 104 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-23 15:01:43,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:01:43,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:01:43,728 INFO L93 Difference]: Finished difference Result 205 states and 380 transitions. [2023-12-23 15:01:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 15:01:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 275 [2023-12-23 15:01:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:01:44,207 INFO L225 Difference]: With dead ends: 205 [2023-12-23 15:01:44,208 INFO L226 Difference]: Without dead ends: 102 [2023-12-23 15:01:44,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 15:01:44,214 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-23 15:01:44,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-23 15:01:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-23 15:01:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-23 15:01:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-23 15:01:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 162 transitions. [2023-12-23 15:01:44,263 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 162 transitions. Word has length 275 [2023-12-23 15:01:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:01:44,263 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 162 transitions. [2023-12-23 15:01:44,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-23 15:01:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 162 transitions. [2023-12-23 15:01:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-23 15:01:44,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:01:44,270 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:01:44,306 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 (2)] Forceful destruction successful, exit code 0 [2023-12-23 15:01:44,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:01:44,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:01:44,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:01:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1113663504, now seen corresponding path program 1 times [2023-12-23 15:01:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:01:44,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418570312] [2023-12-23 15:01:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:01:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:01:44,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:01:44,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:01:44,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 15:01:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:01:45,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 15:01:45,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:01:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-23 15:01:45,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:01:45,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:01:45,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418570312] [2023-12-23 15:01:45,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418570312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:01:45,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:01:45,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 15:01:45,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245748234] [2023-12-23 15:01:45,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:01:45,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 15:01:45,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:01:45,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 15:01:45,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:01:45,847 INFO L87 Difference]: Start difference. First operand 102 states and 162 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:01:51,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:01:55,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:01:59,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:01:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:01:59,943 INFO L93 Difference]: Finished difference Result 275 states and 435 transitions. [2023-12-23 15:01:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 15:01:59,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 276 [2023-12-23 15:01:59,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:01:59,950 INFO L225 Difference]: With dead ends: 275 [2023-12-23 15:01:59,950 INFO L226 Difference]: Without dead ends: 174 [2023-12-23 15:01:59,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:01:59,953 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 112 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-23 15:01:59,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 416 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2023-12-23 15:01:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-23 15:02:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2023-12-23 15:02:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 93 states have (on average 1.3010752688172043) internal successors, (121), 94 states have internal predecessors, (121), 75 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-23 15:02:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 271 transitions. [2023-12-23 15:02:00,003 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 271 transitions. Word has length 276 [2023-12-23 15:02:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:02:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 271 transitions. [2023-12-23 15:02:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:02:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 271 transitions. [2023-12-23 15:02:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-23 15:02:00,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:02:00,013 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:02:00,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 15:02:00,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:02:00,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:02:00,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:02:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash -521624731, now seen corresponding path program 1 times [2023-12-23 15:02:00,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:02:00,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437854767] [2023-12-23 15:02:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:02:00,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:02:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:02:00,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:02:00,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 15:02:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:02:01,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 15:02:01,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:02:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-23 15:02:09,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:02:09,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:02:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437854767] [2023-12-23 15:02:09,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437854767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:02:09,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:02:09,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 15:02:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455663407] [2023-12-23 15:02:09,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:02:09,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 15:02:09,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:02:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 15:02:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 15:02:09,076 INFO L87 Difference]: Start difference. First operand 171 states and 271 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:02:14,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:18,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:22,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:28,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:32,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:36,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:40,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:44,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:02:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:02:44,559 INFO L93 Difference]: Finished difference Result 555 states and 875 transitions. [2023-12-23 15:02:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 15:02:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 277 [2023-12-23 15:02:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:02:45,036 INFO L225 Difference]: With dead ends: 555 [2023-12-23 15:02:45,036 INFO L226 Difference]: Without dead ends: 385 [2023-12-23 15:02:45,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 15:02:45,039 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 118 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-23 15:02:45,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 483 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 35.4s Time] [2023-12-23 15:02:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-23 15:02:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 339. [2023-12-23 15:02:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 184 states have (on average 1.2826086956521738) internal successors, (236), 186 states have internal predecessors, (236), 150 states have call successors, (150), 4 states have call predecessors, (150), 4 states have return successors, (150), 148 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-23 15:02:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 536 transitions. [2023-12-23 15:02:45,105 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 536 transitions. Word has length 277 [2023-12-23 15:02:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:02:45,106 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 536 transitions. [2023-12-23 15:02:45,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:02:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 536 transitions. [2023-12-23 15:02:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-23 15:02:45,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:02:45,110 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:02:45,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 15:02:45,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:02:45,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:02:45,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:02:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1108430745, now seen corresponding path program 1 times [2023-12-23 15:02:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:02:45,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229874710] [2023-12-23 15:02:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:02:45,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:02:45,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:02:45,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:02:45,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 15:02:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:02:46,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 15:02:46,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:02:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-23 15:02:53,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:02:53,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:02:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229874710] [2023-12-23 15:02:53,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229874710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:02:53,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:02:53,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 15:02:53,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087999731] [2023-12-23 15:02:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:02:53,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 15:02:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:02:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 15:02:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:02:53,647 INFO L87 Difference]: Start difference. First operand 339 states and 536 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:02:59,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:03:04,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:03:08,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:03:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:03:09,470 INFO L93 Difference]: Finished difference Result 1015 states and 1606 transitions. [2023-12-23 15:03:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 15:03:09,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 277 [2023-12-23 15:03:09,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:03:09,478 INFO L225 Difference]: With dead ends: 1015 [2023-12-23 15:03:09,478 INFO L226 Difference]: Without dead ends: 677 [2023-12-23 15:03:09,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:03:09,484 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 29 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-23 15:03:09,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 311 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-12-23 15:03:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-23 15:03:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 675. [2023-12-23 15:03:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 366 states have (on average 1.2622950819672132) internal successors, (462), 370 states have internal predecessors, (462), 300 states have call successors, (300), 8 states have call predecessors, (300), 8 states have return successors, (300), 296 states have call predecessors, (300), 300 states have call successors, (300) [2023-12-23 15:03:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1062 transitions. [2023-12-23 15:03:09,584 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1062 transitions. Word has length 277 [2023-12-23 15:03:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:03:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1062 transitions. [2023-12-23 15:03:09,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:03:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1062 transitions. [2023-12-23 15:03:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-23 15:03:09,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:03:09,590 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:03:09,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 15:03:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:03:09,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:03:09,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:03:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash -850265307, now seen corresponding path program 1 times [2023-12-23 15:03:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:03:09,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746877530] [2023-12-23 15:03:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:03:09,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:03:09,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:03:09,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:03:09,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 15:03:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:03:10,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 15:03:10,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:03:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-23 15:03:11,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:03:11,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:03:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746877530] [2023-12-23 15:03:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746877530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:03:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:03:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 15:03:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720740558] [2023-12-23 15:03:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:03:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 15:03:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:03:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 15:03:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:03:11,194 INFO L87 Difference]: Start difference. First operand 675 states and 1062 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:03:14,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 15:03:20,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 15:03:25,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 15:03:31,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 15:03:37,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 15:03:41,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:03:45,264 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 [0] [2023-12-23 15:03:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:03:45,980 INFO L93 Difference]: Finished difference Result 1987 states and 3124 transitions. [2023-12-23 15:03:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 15:03:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 277 [2023-12-23 15:03:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:03:45,997 INFO L225 Difference]: With dead ends: 1987 [2023-12-23 15:03:45,997 INFO L226 Difference]: Without dead ends: 1313 [2023-12-23 15:03:46,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 15:03:46,001 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 152 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2023-12-23 15:03:46,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 446 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 6 Unknown, 0 Unchecked, 34.7s Time] [2023-12-23 15:03:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-12-23 15:03:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 683. [2023-12-23 15:03:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 374 states have (on average 1.2566844919786095) internal successors, (470), 378 states have internal predecessors, (470), 300 states have call successors, (300), 8 states have call predecessors, (300), 8 states have return successors, (300), 296 states have call predecessors, (300), 300 states have call successors, (300) [2023-12-23 15:03:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1070 transitions. [2023-12-23 15:03:46,135 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1070 transitions. Word has length 277 [2023-12-23 15:03:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:03:46,137 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1070 transitions. [2023-12-23 15:03:46,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2023-12-23 15:03:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1070 transitions. [2023-12-23 15:03:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-23 15:03:46,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:03:46,141 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:03:46,176 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 [2023-12-23 15:03:46,369 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 [2023-12-23 15:03:46,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:03:46,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:03:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash -170206937, now seen corresponding path program 1 times [2023-12-23 15:03:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:03:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991129173] [2023-12-23 15:03:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:03:46,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:03:46,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:03:46,372 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) [2023-12-23 15:03:46,372 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 [2023-12-23 15:03:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:03:47,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-23 15:03:47,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:04:38,788 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:04:48,589 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:04:54,010 WARN L293 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:05:02,236 WARN L293 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:05:08,686 WARN L293 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:05:22,943 WARN L293 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:05:49,094 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:06:16,413 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 47 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)