/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_operatoramount_amount500_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:44:14,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:44:14,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 09:44:14,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:44:14,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:44:14,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:44:14,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:44:14,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:44:14,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:44:14,972 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:44:14,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:44:14,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:44:14,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:44:14,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:44:14,973 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:44:14,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:44:14,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:44:14,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:44:14,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:44:14,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:44:14,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:44:14,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:44:14,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:44:14,980 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:44:14,984 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:44:14,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:44:14,984 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:44:14,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:44:14,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:44:14,986 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:44:14,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:44:14,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:44:14,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:44:14,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:44:14,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:44:14,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:44:14,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:44:14,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:44:14,988 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:44:14,988 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:44:14,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:44:14,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:44:14,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:44:14,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:44:14,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:44:14,989 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:44:14,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:44:15,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:44:15,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:44:15,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:44:15,257 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:44:15,257 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:44:15,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-5.i [2023-12-24 09:44:16,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:44:16,802 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:44:16,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-5.i [2023-12-24 09:44:16,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669a1783d/ed0af5fa23f04683a560aa5f10cc849a/FLAGf0743efd0 [2023-12-24 09:44:16,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669a1783d/ed0af5fa23f04683a560aa5f10cc849a [2023-12-24 09:44:16,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:44:16,854 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:44:16,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:44:16,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:44:16,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:44:16,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:44:16" (1/1) ... [2023-12-24 09:44:16,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34587cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:16, skipping insertion in model container [2023-12-24 09:44:16,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:44:16" (1/1) ... [2023-12-24 09:44:16,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:44:17,063 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_operatoramount_amount500_file-5.i[915,928] [2023-12-24 09:44:17,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:44:17,344 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:44:17,355 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_operatoramount_amount500_file-5.i[915,928] [2023-12-24 09:44:17,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:44:17,487 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:44:17,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17 WrapperNode [2023-12-24 09:44:17,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:44:17,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:44:17,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:44:17,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:44:17,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,619 INFO L138 Inliner]: procedures = 27, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 633 [2023-12-24 09:44:17,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:44:17,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:44:17,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:44:17,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:44:17,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,718 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]. [2023-12-24 09:44:17,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:44:17,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:44:17,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:44:17,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:44:17,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (1/1) ... [2023-12-24 09:44:17,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:44:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:44:17,862 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) [2023-12-24 09:44:17,886 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 [2023-12-24 09:44:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:44:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:44:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:44:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:44:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:44:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:44:18,070 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:44:18,072 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:45:00,151 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:45:00,221 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:45:00,221 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:45:00,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:45:00 BoogieIcfgContainer [2023-12-24 09:45:00,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:45:00,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:45:00,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:45:00,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:45:00,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:44:16" (1/3) ... [2023-12-24 09:45:00,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2545fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:45:00, skipping insertion in model container [2023-12-24 09:45:00,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:44:17" (2/3) ... [2023-12-24 09:45:00,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2545fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:45:00, skipping insertion in model container [2023-12-24 09:45:00,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:45:00" (3/3) ... [2023-12-24 09:45:00,229 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-5.i [2023-12-24 09:45:00,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:45:00,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:45:00,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:45:00,309 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;@69f87537, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:45:00,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:45:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 171 states have (on average 1.543859649122807) internal successors, (264), 172 states have internal predecessors, (264), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 09:45:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-12-24 09:45:00,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:45:00,361 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:45:00,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:45:00,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:45:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash -964193622, now seen corresponding path program 1 times [2023-12-24 09:45:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:45:00,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684740935] [2023-12-24 09:45:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:45:00,390 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 [2023-12-24 09:45:00,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:45:00,392 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) [2023-12-24 09:45:00,397 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 [2023-12-24 09:45:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:45:03,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:45:03,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:45:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7916 proven. 0 refuted. 0 times theorem prover too weak. 7748 trivial. 0 not checked. [2023-12-24 09:45:03,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:45:03,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:45:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684740935] [2023-12-24 09:45:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684740935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:45:03,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:45:03,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:45:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412460660] [2023-12-24 09:45:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:45:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:45:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:45:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:45:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:45:03,912 INFO L87 Difference]: Start difference. First operand has 263 states, 171 states have (on average 1.543859649122807) internal successors, (264), 172 states have internal predecessors, (264), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (89), 2 states have call predecessors, (89), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-24 09:45:10,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:45:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:45:10,018 INFO L93 Difference]: Finished difference Result 523 states and 971 transitions. [2023-12-24 09:45:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:45:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (89), 2 states have call predecessors, (89), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 569 [2023-12-24 09:45:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:45:10,764 INFO L225 Difference]: With dead ends: 523 [2023-12-24 09:45:10,764 INFO L226 Difference]: Without dead ends: 261 [2023-12-24 09:45:10,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:45:10,776 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:45:10,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 431 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-12-24 09:45:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-24 09:45:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-24 09:45:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 170 states have (on average 1.5058823529411764) internal successors, (256), 170 states have internal predecessors, (256), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 09:45:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 434 transitions. [2023-12-24 09:45:10,855 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 434 transitions. Word has length 569 [2023-12-24 09:45:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:45:10,855 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 434 transitions. [2023-12-24 09:45:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (89), 2 states have call predecessors, (89), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-24 09:45:10,858 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 434 transitions. [2023-12-24 09:45:10,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-24 09:45:10,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:45:10,874 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:45:10,965 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 [2023-12-24 09:45:11,100 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 [2023-12-24 09:45:11,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:45:11,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:45:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1478522940, now seen corresponding path program 1 times [2023-12-24 09:45:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:45:11,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439492388] [2023-12-24 09:45:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:45:11,103 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 [2023-12-24 09:45:11,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:45:11,104 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) [2023-12-24 09:45:11,106 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 [2023-12-24 09:45:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:45:14,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:45:14,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:45:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7614 proven. 105 refuted. 0 times theorem prover too weak. 7945 trivial. 0 not checked. [2023-12-24 09:45:26,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:45:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 159 proven. 105 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-24 09:45:32,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:45:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439492388] [2023-12-24 09:45:32,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439492388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:45:32,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:45:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 09:45:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007765015] [2023-12-24 09:45:32,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:45:32,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:45:32,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:45:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:45:32,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 09:45:32,101 INFO L87 Difference]: Start difference. First operand 261 states and 434 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-24 09:45:53,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:45:57,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:46:01,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:46:05,166 WARN L539 Checker$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 [] [2023-12-24 09:46:09,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:46:13,180 WARN L539 Checker$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 [] [2023-12-24 09:46:17,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:46:18,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:46:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:46:22,117 INFO L93 Difference]: Finished difference Result 797 states and 1314 transitions. [2023-12-24 09:46:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 09:46:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 570 [2023-12-24 09:46:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:46:22,127 INFO L225 Difference]: With dead ends: 797 [2023-12-24 09:46:22,128 INFO L226 Difference]: Without dead ends: 537 [2023-12-24 09:46:22,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 1132 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-24 09:46:22,132 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 762 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 305 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.2s IncrementalHoareTripleChecker+Time [2023-12-24 09:46:22,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1153 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 574 Invalid, 7 Unknown, 0 Unchecked, 47.2s Time] [2023-12-24 09:46:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-24 09:46:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 268. [2023-12-24 09:46:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 176 states have internal predecessors, (263), 89 states have call successors, (89), 2 states have call predecessors, (89), 2 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 09:46:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 441 transitions. [2023-12-24 09:46:22,215 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 441 transitions. Word has length 570 [2023-12-24 09:46:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:46:22,216 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 441 transitions. [2023-12-24 09:46:22,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-24 09:46:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 441 transitions. [2023-12-24 09:46:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-24 09:46:22,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:46:22,228 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:46:22,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 09:46:22,436 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 [2023-12-24 09:46:22,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:46:22,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:46:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1044793854, now seen corresponding path program 1 times [2023-12-24 09:46:22,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:46:22,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088699054] [2023-12-24 09:46:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:46:22,438 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 [2023-12-24 09:46:22,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:46:22,440 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) [2023-12-24 09:46:22,442 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 [2023-12-24 09:46:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:46:25,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:46:25,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:46:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7614 proven. 105 refuted. 0 times theorem prover too weak. 7945 trivial. 0 not checked. [2023-12-24 09:46:37,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:46:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 159 proven. 105 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-24 09:46:43,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:46:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088699054] [2023-12-24 09:46:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088699054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:46:43,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:46:43,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 09:46:43,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784139250] [2023-12-24 09:46:43,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:46:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:46:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:46:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:46:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 09:46:43,026 INFO L87 Difference]: Start difference. First operand 268 states and 441 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-24 09:47:04,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:47:08,392 WARN L539 Checker$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 [] [2023-12-24 09:47:12,409 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 [] [2023-12-24 09:47:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:47:12,413 INFO L93 Difference]: Finished difference Result 537 states and 881 transitions. [2023-12-24 09:47:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 09:47:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 570 [2023-12-24 09:47:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:47:13,307 INFO L225 Difference]: With dead ends: 537 [2023-12-24 09:47:13,307 INFO L226 Difference]: Without dead ends: 270 [2023-12-24 09:47:13,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1132 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-24 09:47:13,309 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 682 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 392 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:47:13,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 791 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 483 Invalid, 3 Unknown, 0 Unchecked, 27.6s Time] [2023-12-24 09:47:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-24 09:47:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2023-12-24 09:47:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 174 states have (on average 1.471264367816092) internal successors, (256), 174 states have internal predecessors, (256), 89 states have call successors, (89), 2 states have call predecessors, (89), 2 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 09:47:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 434 transitions. [2023-12-24 09:47:13,334 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 434 transitions. Word has length 570 [2023-12-24 09:47:13,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:47:13,336 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 434 transitions. [2023-12-24 09:47:13,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-24 09:47:13,337 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 434 transitions. [2023-12-24 09:47:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-24 09:47:13,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:47:13,341 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:47:13,427 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 [2023-12-24 09:47:13,564 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 [2023-12-24 09:47:13,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:47:13,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:47:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 216182978, now seen corresponding path program 1 times [2023-12-24 09:47:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:47:13,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061233592] [2023-12-24 09:47:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:47:13,567 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 [2023-12-24 09:47:13,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:47:13,569 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) [2023-12-24 09:47:13,571 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 [2023-12-24 09:47:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:47:17,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 09:47:17,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:47:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 9914 proven. 318 refuted. 0 times theorem prover too weak. 5432 trivial. 0 not checked. [2023-12-24 09:47:54,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:48:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 204 proven. 321 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2023-12-24 09:48:10,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:48:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061233592] [2023-12-24 09:48:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061233592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:48:10,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:48:10,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-24 09:48:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517094256] [2023-12-24 09:48:10,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:48:10,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 09:48:10,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:48:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 09:48:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:48:10,153 INFO L87 Difference]: Start difference. First operand 266 states and 434 transitions. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 3 states have call successors, (161), 3 states have call predecessors, (161), 7 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-12-24 09:48:46,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:48:50,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:48:54,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:48:58,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:49:02,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:49:09,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:49:13,406 WARN L539 Checker$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 [] [2023-12-24 09:49:17,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:49:21,455 WARN L539 Checker$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 [] [2023-12-24 09:49:25,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:49:26,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:49:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:49:55,211 INFO L93 Difference]: Finished difference Result 722 states and 1150 transitions. [2023-12-24 09:49:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 09:49:55,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 3 states have call successors, (161), 3 states have call predecessors, (161), 7 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) Word has length 570 [2023-12-24 09:49:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:49:55,216 INFO L225 Difference]: With dead ends: 722 [2023-12-24 09:49:55,216 INFO L226 Difference]: Without dead ends: 457 [2023-12-24 09:49:55,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1128 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 09:49:55,218 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1062 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 331 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.5s IncrementalHoareTripleChecker+Time [2023-12-24 09:49:55,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1807 Invalid, 2217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [331 Valid, 1876 Invalid, 10 Unknown, 0 Unchecked, 98.5s Time] [2023-12-24 09:49:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-24 09:49:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 274. [2023-12-24 09:49:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 180 states have (on average 1.4388888888888889) internal successors, (259), 180 states have internal predecessors, (259), 89 states have call successors, (89), 4 states have call predecessors, (89), 4 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 09:49:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 437 transitions. [2023-12-24 09:49:55,248 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 437 transitions. Word has length 570 [2023-12-24 09:49:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:49:55,249 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 437 transitions. [2023-12-24 09:49:55,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 3 states have call successors, (161), 3 states have call predecessors, (161), 7 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-12-24 09:49:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 437 transitions. [2023-12-24 09:49:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-24 09:49:55,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:49:55,254 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:49:55,329 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 [2023-12-24 09:49:55,464 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 [2023-12-24 09:49:55,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:49:55,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:49:55,465 INFO L85 PathProgramCache]: Analyzing trace with hash 639829700, now seen corresponding path program 1 times [2023-12-24 09:49:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:49:55,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803851013] [2023-12-24 09:49:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:49:55,467 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 [2023-12-24 09:49:55,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:49:55,468 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) [2023-12-24 09:49:55,468 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 [2023-12-24 09:49:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:49:59,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:49:59,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:50:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 4014 proven. 225 refuted. 0 times theorem prover too weak. 11425 trivial. 0 not checked. [2023-12-24 09:50:26,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:50:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 39 proven. 225 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2023-12-24 09:50:37,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:50:37,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803851013] [2023-12-24 09:50:37,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803851013] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:50:37,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:50:37,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 09:50:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013752292] [2023-12-24 09:50:37,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:50:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:50:37,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:50:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:50:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 09:50:37,571 INFO L87 Difference]: Start difference. First operand 274 states and 437 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 2 states have call predecessors, (165), 2 states have call successors, (165) [2023-12-24 09:50:58,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:02,628 WARN L539 Checker$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 [] [2023-12-24 09:51:06,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:11,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:19,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:23,474 WARN L539 Checker$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 [] [2023-12-24 09:51:27,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:34,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:38,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:42,577 WARN L539 Checker$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 [] [2023-12-24 09:51:46,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:48,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:09,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:13,534 WARN L539 Checker$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 [] [2023-12-24 09:52:15,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:20,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:52:20,107 INFO L93 Difference]: Finished difference Result 868 states and 1365 transitions. [2023-12-24 09:52:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 09:52:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 2 states have call predecessors, (165), 2 states have call successors, (165) Word has length 570 [2023-12-24 09:52:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:52:20,376 INFO L225 Difference]: With dead ends: 868 [2023-12-24 09:52:20,376 INFO L226 Difference]: Without dead ends: 595 [2023-12-24 09:52:20,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1132 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-24 09:52:20,378 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 730 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 270 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:52:20,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1660 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1026 Invalid, 14 Unknown, 0 Unchecked, 99.6s Time] [2023-12-24 09:52:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-24 09:52:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 574. [2023-12-24 09:52:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 372 states have (on average 1.4059139784946237) internal successors, (523), 373 states have internal predecessors, (523), 191 states have call successors, (191), 10 states have call predecessors, (191), 10 states have return successors, (191), 190 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-24 09:52:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 905 transitions. [2023-12-24 09:52:20,438 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 905 transitions. Word has length 570 [2023-12-24 09:52:20,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:52:20,439 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 905 transitions. [2023-12-24 09:52:20,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 2 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 2 states have call predecessors, (165), 2 states have call successors, (165) [2023-12-24 09:52:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 905 transitions. [2023-12-24 09:52:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-24 09:52:20,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:52:20,463 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:52:20,547 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 [2023-12-24 09:52:20,664 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 [2023-12-24 09:52:20,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:52:20,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:52:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1354315006, now seen corresponding path program 1 times [2023-12-24 09:52:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:52:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388986747] [2023-12-24 09:52:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:52:20,667 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 [2023-12-24 09:52:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:52:20,668 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) [2023-12-24 09:52:20,673 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 [2023-12-24 09:52:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:52:24,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:52:24,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:52:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7414 proven. 165 refuted. 0 times theorem prover too weak. 8085 trivial. 0 not checked. [2023-12-24 09:52:50,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:52:55,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:52:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388986747] [2023-12-24 09:52:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388986747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:52:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1380094376] [2023-12-24 09:52:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:52:55,790 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:52:55,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:52:55,821 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:52:55,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 09:52:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:52:57,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:52:57,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:52:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-24 09:52:59,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:52:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1380094376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:52:59,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:52:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-24 09:52:59,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518259206] [2023-12-24 09:52:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:52:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:52:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:52:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:52:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:52:59,040 INFO L87 Difference]: Start difference. First operand 574 states and 905 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-24 09:53:00,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:53:02,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:53:08,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:53:12,677 WARN L539 Checker$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 [] [2023-12-24 09:53:16,691 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 [] [2023-12-24 09:53:17,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:53:17,707 INFO L93 Difference]: Finished difference Result 1658 states and 2611 transitions. [2023-12-24 09:53:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:53:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 570 [2023-12-24 09:53:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:53:17,716 INFO L225 Difference]: With dead ends: 1658 [2023-12-24 09:53:17,716 INFO L226 Difference]: Without dead ends: 1109 [2023-12-24 09:53:17,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1201 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:53:17,719 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 393 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:53:17,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 811 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2023-12-24 09:53:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-12-24 09:53:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1105. [2023-12-24 09:53:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 715 states have (on average 1.386013986013986) internal successors, (991), 716 states have internal predecessors, (991), 369 states have call successors, (369), 20 states have call predecessors, (369), 20 states have return successors, (369), 368 states have call predecessors, (369), 369 states have call successors, (369) [2023-12-24 09:53:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1729 transitions. [2023-12-24 09:53:17,825 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1729 transitions. Word has length 570 [2023-12-24 09:53:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:53:17,827 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1729 transitions. [2023-12-24 09:53:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2023-12-24 09:53:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1729 transitions. [2023-12-24 09:53:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-24 09:53:17,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:53:17,857 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:53:17,975 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 (7)] Forceful destruction successful, exit code 0 [2023-12-24 09:53:18,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 09:53:18,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:53:18,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:53:18,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:53:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1794052262, now seen corresponding path program 1 times [2023-12-24 09:53:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:53:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392489410] [2023-12-24 09:53:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:53:18,260 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 [2023-12-24 09:53:18,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:53:18,261 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-24 09:53:18,262 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 (9)] Waiting until timeout for monitored process [2023-12-24 09:53:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:53:22,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:53:22,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:53:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7414 proven. 165 refuted. 0 times theorem prover too weak. 8085 trivial. 0 not checked. [2023-12-24 09:53:47,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:53:52,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:53:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392489410] [2023-12-24 09:53:52,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392489410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:53:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [882054195] [2023-12-24 09:53:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:53:52,288 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:53:52,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:53:52,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:53:52,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 09:54:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:54:03,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 09:54:03,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:55:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7414 proven. 165 refuted. 0 times theorem prover too weak. 8085 trivial. 0 not checked. [2023-12-24 09:55:33,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:56:07,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [882054195] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:56:07,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:56:07,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-24 09:56:07,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097212185] [2023-12-24 09:56:07,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:56:07,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 09:56:07,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:56:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 09:56:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-12-24 09:56:07,093 INFO L87 Difference]: Start difference. First operand 1105 states and 1729 transitions. Second operand has 16 states, 16 states have (on average 15.8125) internal successors, (253), 16 states have internal predecessors, (253), 4 states have call successors, (178), 4 states have call predecessors, (178), 6 states have return successors, (178), 4 states have call predecessors, (178), 4 states have call successors, (178) [2023-12-24 09:57:08,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:12,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:16,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:20,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:24,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:28,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:32,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:57:54,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:58,119 WARN L539 Checker$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 [] [2023-12-24 09:58:02,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:58:06,151 WARN L539 Checker$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 [] [2023-12-24 09:58:10,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:58:14,182 WARN L539 Checker$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 [] [2023-12-24 09:58:18,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:58:22,207 WARN L539 Checker$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] [2023-12-24 09:58:26,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-24 09:58:29,966 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:58:29,967 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:58:29,980 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:58:30,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:58:31,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-24 09:58:31,137 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 (9)] Forceful destruction successful, exit code 0 [2023-12-24 09:58:31,168 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 09:58:31,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-24 09:58:31,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1265 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 09:58:31,303 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1625 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 273 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 4929 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.5s IncrementalHoareTripleChecker+Time [2023-12-24 09:58:31,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1625 Valid, 4929 Invalid, 2169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [273 Valid, 1879 Invalid, 16 Unknown, 0 Unchecked, 131.5s Time] [2023-12-24 09:58:31,304 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 09:58:31,304 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-24 09:58:31,308 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:58:31,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 09:58:31,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 09:58:31 BoogieIcfgContainer [2023-12-24 09:58:31,311 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 09:58:31,312 INFO L158 Benchmark]: Toolchain (without parser) took 854457.98ms. Allocated memory is still 306.2MB. Free memory was 255.0MB in the beginning and 146.8MB in the end (delta: 108.2MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. [2023-12-24 09:58:31,312 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 177.2MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:58:31,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.57ms. Allocated memory is still 306.2MB. Free memory was 254.7MB in the beginning and 219.2MB in the end (delta: 35.5MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-24 09:58:31,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.85ms. Allocated memory is still 306.2MB. Free memory was 219.2MB in the beginning and 212.4MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-24 09:58:31,313 INFO L158 Benchmark]: Boogie Preprocessor took 192.44ms. Allocated memory is still 306.2MB. Free memory was 212.4MB in the beginning and 252.5MB in the end (delta: -40.1MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2023-12-24 09:58:31,313 INFO L158 Benchmark]: RCFGBuilder took 42407.66ms. Allocated memory is still 306.2MB. Free memory was 252.5MB in the beginning and 162.8MB in the end (delta: 89.7MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. [2023-12-24 09:58:31,313 INFO L158 Benchmark]: TraceAbstraction took 811087.28ms. Allocated memory is still 306.2MB. Free memory was 162.3MB in the beginning and 146.8MB in the end (delta: 15.5MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. [2023-12-24 09:58:31,314 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 177.2MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 633.57ms. Allocated memory is still 306.2MB. Free memory was 254.7MB in the beginning and 219.2MB in the end (delta: 35.5MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 129.85ms. Allocated memory is still 306.2MB. Free memory was 219.2MB in the beginning and 212.4MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 192.44ms. Allocated memory is still 306.2MB. Free memory was 212.4MB in the beginning and 252.5MB in the end (delta: -40.1MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * RCFGBuilder took 42407.66ms. Allocated memory is still 306.2MB. Free memory was 252.5MB in the beginning and 162.8MB in the end (delta: 89.7MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. * TraceAbstraction took 811087.28ms. Allocated memory is still 306.2MB. Free memory was 162.3MB in the beginning and 146.8MB in the end (delta: 15.5MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 263 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 811.0s, OverallIterations: 7, TraceHistogramMax: 89, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 458.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 mSolverCounterUnknown, 5341 SdHoareTripleChecker+Valid, 429.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5254 mSDsluCounter, 11582 SdHoareTripleChecker+Invalid, 420.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8452 mSDsCounter, 1578 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5859 IncrementalHoareTripleChecker+Invalid, 7492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1578 mSolverCounterUnsat, 3130 mSDtfsCounter, 5859 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7689 GetRequests, 7558 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 63.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1105occurred in iteration=6, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 481 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 36.5s SatisfiabilityAnalysisTime, 313.1s InterpolantComputationTime, 5129 NumberOfCodeBlocks, 5129 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 7396 ConstructedInterpolants, 100 QuantifiedInterpolants, 21187 SizeOfPredicates, 31 NumberOfNonLiveVariables, 8483 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 201628/203632 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown