/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 03:06:24,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 03:06:24,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 03:06:24,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 03:06:24,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 03:06:25,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 03:06:25,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 03:06:25,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 03:06:25,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 03:06:25,018 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 03:06:25,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 03:06:25,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 03:06:25,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 03:06:25,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 03:06:25,020 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 03:06:25,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 03:06:25,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 03:06:25,021 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 03:06:25,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 03:06:25,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 03:06:25,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 03:06:25,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 03:06:25,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 03:06:25,022 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 03:06:25,022 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 03:06:25,022 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 03:06:25,022 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 03:06:25,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 03:06:25,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 03:06:25,023 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 03:06:25,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 03:06:25,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 03:06:25,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 03:06:25,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 03:06:25,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:06:25,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 03:06:25,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 03:06:25,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 03:06:25,025 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 03:06:25,025 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 03:06:25,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 03:06:25,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 03:06:25,026 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 03:06:25,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 03:06:25,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 03:06:25,026 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 03:06:25,026 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 03:06:25,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 03:06:25,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 03:06:25,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 03:06:25,209 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 03:06:25,209 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 03:06:25,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-90.i [2023-12-23 03:06:26,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 03:06:26,422 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 03:06:26,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-90.i [2023-12-23 03:06:26,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfd63865/3fd3459ce5304bd98fcf82e88734b9ed/FLAGbab841163 [2023-12-23 03:06:26,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfd63865/3fd3459ce5304bd98fcf82e88734b9ed [2023-12-23 03:06:26,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 03:06:26,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 03:06:26,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 03:06:26,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 03:06:26,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 03:06:26,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da2dac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26, skipping insertion in model container [2023-12-23 03:06:26,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,470 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 03:06:26,570 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-90.i[916,929] [2023-12-23 03:06:26,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:06:26,662 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 03:06:26,670 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-90.i[916,929] [2023-12-23 03:06:26,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:06:26,722 INFO L206 MainTranslator]: Completed translation [2023-12-23 03:06:26,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26 WrapperNode [2023-12-23 03:06:26,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 03:06:26,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 03:06:26,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 03:06:26,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 03:06:26,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,772 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 374 [2023-12-23 03:06:26,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 03:06:26,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 03:06:26,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 03:06:26,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 03:06:26,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,799 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 03:06:26,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 03:06:26,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 03:06:26,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 03:06:26,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 03:06:26,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (1/1) ... [2023-12-23 03:06:26,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:06:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 03:06:26,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 03:06:26,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 03:06:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 03:06:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 03:06:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 03:06:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 03:06:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 03:06:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 03:06:27,029 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 03:06:27,034 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 03:06:39,090 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 03:06:39,151 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 03:06:39,151 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 03:06:39,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:06:39 BoogieIcfgContainer [2023-12-23 03:06:39,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 03:06:39,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 03:06:39,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 03:06:39,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 03:06:39,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:06:26" (1/3) ... [2023-12-23 03:06:39,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f1a769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:06:39, skipping insertion in model container [2023-12-23 03:06:39,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:06:26" (2/3) ... [2023-12-23 03:06:39,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f1a769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:06:39, skipping insertion in model container [2023-12-23 03:06:39,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:06:39" (3/3) ... [2023-12-23 03:06:39,157 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-90.i [2023-12-23 03:06:39,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 03:06:39,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 03:06:39,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 03:06:39,230 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;@16b6b566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 03:06:39,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 03:06:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 102 states have (on average 1.6372549019607843) internal successors, (167), 103 states have internal predecessors, (167), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-23 03:06:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:06:39,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:06:39,262 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:06:39,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:06:39,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:06:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash -854788461, now seen corresponding path program 1 times [2023-12-23 03:06:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:06:39,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286225984] [2023-12-23 03:06:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:39,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:06:39,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:06:39,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 03:06:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:40,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 03:06:40,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2240 proven. 0 refuted. 0 times theorem prover too weak. 3700 trivial. 0 not checked. [2023-12-23 03:06:40,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:06:40,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:06:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286225984] [2023-12-23 03:06:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286225984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:06:40,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:06:40,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 03:06:40,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890224617] [2023-12-23 03:06:40,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:06:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 03:06:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:06:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 03:06:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 03:06:40,114 INFO L87 Difference]: Start difference. First operand has 160 states, 102 states have (on average 1.6372549019607843) internal successors, (167), 103 states have internal predecessors, (167), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 03:06:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:06:40,475 INFO L93 Difference]: Finished difference Result 317 states and 607 transitions. [2023-12-23 03:06:40,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 03:06:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 346 [2023-12-23 03:06:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:06:40,500 INFO L225 Difference]: With dead ends: 317 [2023-12-23 03:06:40,501 INFO L226 Difference]: Without dead ends: 158 [2023-12-23 03:06:40,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 03:06:40,515 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 03:06:40,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 03:06:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-23 03:06:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-23 03:06:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 101 states have (on average 1.603960396039604) internal successors, (162), 101 states have internal predecessors, (162), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-23 03:06:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 272 transitions. [2023-12-23 03:06:40,632 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 272 transitions. Word has length 346 [2023-12-23 03:06:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:06:40,633 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 272 transitions. [2023-12-23 03:06:40,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 03:06:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 272 transitions. [2023-12-23 03:06:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:06:40,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:06:40,657 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:06:40,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 03:06:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:40,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:06:40,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:06:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 783614925, now seen corresponding path program 1 times [2023-12-23 03:06:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:06:40,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668584105] [2023-12-23 03:06:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:40,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:06:40,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:06:40,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 03:06:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:41,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:06:41,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:06:43,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:06:43,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:06:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668584105] [2023-12-23 03:06:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668584105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:06:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [602442243] [2023-12-23 03:06:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:43,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:06:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:06:43,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:06:43,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 03:06:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:44,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 03:06:44,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:06:44,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:06:44,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [602442243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:06:44,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:06:44,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 03:06:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762161419] [2023-12-23 03:06:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:06:44,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:06:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:06:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:06:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:06:44,240 INFO L87 Difference]: Start difference. First operand 158 states and 272 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:06:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:06:44,769 INFO L93 Difference]: Finished difference Result 413 states and 715 transitions. [2023-12-23 03:06:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:06:44,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:06:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:06:44,774 INFO L225 Difference]: With dead ends: 413 [2023-12-23 03:06:44,774 INFO L226 Difference]: Without dead ends: 256 [2023-12-23 03:06:44,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:06:44,776 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 157 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 03:06:44,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 588 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 03:06:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-23 03:06:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 253. [2023-12-23 03:06:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 177 states have (on average 1.6610169491525424) internal successors, (294), 178 states have internal predecessors, (294), 73 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-23 03:06:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 440 transitions. [2023-12-23 03:06:44,812 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 440 transitions. Word has length 346 [2023-12-23 03:06:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:06:44,813 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 440 transitions. [2023-12-23 03:06:44,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:06:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 440 transitions. [2023-12-23 03:06:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:06:44,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:06:44,820 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:06:44,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-23 03:06:45,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 03:06:45,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:45,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:06:45,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:06:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash 196808911, now seen corresponding path program 1 times [2023-12-23 03:06:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:06:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080230880] [2023-12-23 03:06:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:45,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:06:45,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:06:45,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 03:06:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:45,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:06:46,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:06:47,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:06:47,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:06:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080230880] [2023-12-23 03:06:47,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080230880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:06:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1103042528] [2023-12-23 03:06:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:06:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:06:47,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:06:47,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 03:06:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:48,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 03:06:48,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:06:48,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:06:48,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1103042528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:06:48,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:06:48,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 03:06:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991153070] [2023-12-23 03:06:48,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:06:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:06:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:06:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:06:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:06:48,438 INFO L87 Difference]: Start difference. First operand 253 states and 440 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:06:49,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:06:49,237 INFO L93 Difference]: Finished difference Result 512 states and 884 transitions. [2023-12-23 03:06:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:06:49,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:06:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:06:49,249 INFO L225 Difference]: With dead ends: 512 [2023-12-23 03:06:49,249 INFO L226 Difference]: Without dead ends: 260 [2023-12-23 03:06:49,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:06:49,251 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 146 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-23 03:06:49,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 613 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-23 03:06:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-23 03:06:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 209. [2023-12-23 03:06:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 151 states have (on average 1.6622516556291391) internal successors, (251), 151 states have internal predecessors, (251), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-23 03:06:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 361 transitions. [2023-12-23 03:06:49,263 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 361 transitions. Word has length 346 [2023-12-23 03:06:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:06:49,264 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 361 transitions. [2023-12-23 03:06:49,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:06:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 361 transitions. [2023-12-23 03:06:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:06:49,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:06:49,267 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:06:49,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 03:06:49,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 03:06:49,700 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 03:06:49,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:06:49,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:06:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash 620455633, now seen corresponding path program 1 times [2023-12-23 03:06:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:06:49,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137423882] [2023-12-23 03:06:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:49,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:49,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:06:49,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:06:49,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 03:06:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:50,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:06:50,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:06:52,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:06:52,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:06:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137423882] [2023-12-23 03:06:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137423882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:06:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1721323196] [2023-12-23 03:06:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:52,197 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:06:52,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:06:52,198 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) [2023-12-23 03:06:52,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 03:06:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:52,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 03:06:52,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:06:52,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:06:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1721323196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:06:52,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:06:52,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 03:06:52,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499408785] [2023-12-23 03:06:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:06:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:06:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:06:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:06:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:06:52,997 INFO L87 Difference]: Start difference. First operand 209 states and 361 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:06:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:06:53,416 INFO L93 Difference]: Finished difference Result 544 states and 935 transitions. [2023-12-23 03:06:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:06:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:06:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:06:53,425 INFO L225 Difference]: With dead ends: 544 [2023-12-23 03:06:53,426 INFO L226 Difference]: Without dead ends: 336 [2023-12-23 03:06:53,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:06:53,427 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 164 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 03:06:53,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 638 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 03:06:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-23 03:06:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2023-12-23 03:06:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 243 states have (on average 1.6502057613168724) internal successors, (401), 244 states have internal predecessors, (401), 85 states have call successors, (85), 4 states have call predecessors, (85), 4 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-23 03:06:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 571 transitions. [2023-12-23 03:06:53,442 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 571 transitions. Word has length 346 [2023-12-23 03:06:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:06:53,443 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 571 transitions. [2023-12-23 03:06:53,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:06:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 571 transitions. [2023-12-23 03:06:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:06:53,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:06:53,446 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:06:53,469 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 [2023-12-23 03:06:53,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 03:06:53,869 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 [2023-12-23 03:06:53,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:06:53,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:06:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1043157459, now seen corresponding path program 1 times [2023-12-23 03:06:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:06:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417847725] [2023-12-23 03:06:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:53,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:06:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:06:53,872 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) [2023-12-23 03:06:53,874 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 [2023-12-23 03:06:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:54,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:06:54,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:06:56,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:06:56,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:06:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417847725] [2023-12-23 03:06:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417847725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:06:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1247763750] [2023-12-23 03:06:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:06:56,166 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:06:56,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:06:56,168 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) [2023-12-23 03:06:56,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 03:06:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:06:57,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:06:57,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:06:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:06:58,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:06:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1247763750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:06:58,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:06:58,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-23 03:06:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104702104] [2023-12-23 03:06:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:06:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 03:06:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:06:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 03:06:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-23 03:06:58,934 INFO L87 Difference]: Start difference. First operand 333 states and 571 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:07:02,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:05,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:07,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:07:09,138 INFO L93 Difference]: Finished difference Result 1328 states and 2265 transitions. [2023-12-23 03:07:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 03:07:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:07:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:07:09,144 INFO L225 Difference]: With dead ends: 1328 [2023-12-23 03:07:09,144 INFO L226 Difference]: Without dead ends: 996 [2023-12-23 03:07:09,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-23 03:07:09,146 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 633 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-23 03:07:09,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 858 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-23 03:07:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-23 03:07:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 719. [2023-12-23 03:07:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 509 states have (on average 1.612966601178782) internal successors, (821), 512 states have internal predecessors, (821), 198 states have call successors, (198), 11 states have call predecessors, (198), 11 states have return successors, (198), 195 states have call predecessors, (198), 198 states have call successors, (198) [2023-12-23 03:07:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1217 transitions. [2023-12-23 03:07:09,185 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1217 transitions. Word has length 346 [2023-12-23 03:07:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:07:09,185 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 1217 transitions. [2023-12-23 03:07:09,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:07:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1217 transitions. [2023-12-23 03:07:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:07:09,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:07:09,187 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:07:09,211 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 [2023-12-23 03:07:09,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-23 03:07:09,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 03:07:09,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:07:09,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:07:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1702688981, now seen corresponding path program 1 times [2023-12-23 03:07:09,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:07:09,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274326413] [2023-12-23 03:07:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:07:09,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:07:09,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:07:09,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:07:09,613 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 (11)] Waiting until timeout for monitored process [2023-12-23 03:07:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:07:10,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:07:10,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:07:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:07:11,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:07:11,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:07:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274326413] [2023-12-23 03:07:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274326413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:07:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255410517] [2023-12-23 03:07:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:07:11,966 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:07:11,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:07:11,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:07:11,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-23 03:07:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:07:13,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:07:13,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:07:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:07:14,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:07:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [255410517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:07:14,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:07:14,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-12-23 03:07:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968599286] [2023-12-23 03:07:14,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:07:14,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 03:07:14,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:07:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 03:07:14,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-23 03:07:14,847 INFO L87 Difference]: Start difference. First operand 719 states and 1217 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:07:22,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:26,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:28,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:31,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:35,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:07:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:07:40,434 INFO L93 Difference]: Finished difference Result 1965 states and 3322 transitions. [2023-12-23 03:07:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 03:07:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:07:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:07:40,439 INFO L225 Difference]: With dead ends: 1965 [2023-12-23 03:07:40,439 INFO L226 Difference]: Without dead ends: 1293 [2023-12-23 03:07:40,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-23 03:07:40,441 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 856 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 312 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-12-23 03:07:40,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1465 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 523 Invalid, 1 Unknown, 0 Unchecked, 25.1s Time] [2023-12-23 03:07:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2023-12-23 03:07:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1023. [2023-12-23 03:07:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 733 states have (on average 1.6125511596180082) internal successors, (1182), 738 states have internal predecessors, (1182), 272 states have call successors, (272), 17 states have call predecessors, (272), 17 states have return successors, (272), 267 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-23 03:07:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1726 transitions. [2023-12-23 03:07:40,507 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1726 transitions. Word has length 346 [2023-12-23 03:07:40,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:07:40,511 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1726 transitions. [2023-12-23 03:07:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:07:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1726 transitions. [2023-12-23 03:07:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:07:40,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:07:40,515 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:07:40,537 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 (11)] Forceful destruction successful, exit code 0 [2023-12-23 03:07:40,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-23 03:07:40,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 03:07:40,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:07:40,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:07:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1630302423, now seen corresponding path program 1 times [2023-12-23 03:07:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:07:40,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145486495] [2023-12-23 03:07:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:07:40,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:07:40,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:07:40,945 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:07:40,946 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 (13)] Waiting until timeout for monitored process [2023-12-23 03:07:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:07:41,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:07:41,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:07:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:07:43,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:07:43,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:07:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145486495] [2023-12-23 03:07:43,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145486495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:07:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397244609] [2023-12-23 03:07:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:07:43,878 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:07:43,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:07:43,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:07:43,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-23 03:07:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:07:45,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 03:07:45,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:07:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:07:47,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:07:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [397244609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:07:47,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:07:47,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-12-23 03:07:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880851776] [2023-12-23 03:07:47,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:07:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 03:07:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:07:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 03:07:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-23 03:07:47,363 INFO L87 Difference]: Start difference. First operand 1023 states and 1726 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 03:07:54,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:07:58,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:08:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:08:03,306 INFO L93 Difference]: Finished difference Result 1784 states and 2985 transitions. [2023-12-23 03:08:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-23 03:08:03,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 346 [2023-12-23 03:08:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:08:03,313 INFO L225 Difference]: With dead ends: 1784 [2023-12-23 03:08:03,313 INFO L226 Difference]: Without dead ends: 808 [2023-12-23 03:08:03,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2023-12-23 03:08:03,316 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 336 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-23 03:08:03,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1499 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2023-12-23 03:08:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-12-23 03:08:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 547. [2023-12-23 03:08:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 398 states have (on average 1.6231155778894473) internal successors, (646), 399 states have internal predecessors, (646), 140 states have call successors, (140), 8 states have call predecessors, (140), 8 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-23 03:08:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 926 transitions. [2023-12-23 03:08:03,346 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 926 transitions. Word has length 346 [2023-12-23 03:08:03,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:08:03,346 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 926 transitions. [2023-12-23 03:08:03,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 03:08:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 926 transitions. [2023-12-23 03:08:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:08:03,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:08:03,350 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:08:03,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-23 03:08:03,579 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 (13)] Ended with exit code 0 [2023-12-23 03:08:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:03,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:08:03,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:08:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2072516757, now seen corresponding path program 1 times [2023-12-23 03:08:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:08:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409166473] [2023-12-23 03:08:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:03,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:03,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:08:03,779 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:08:03,780 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 (15)] Waiting until timeout for monitored process [2023-12-23 03:08:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:04,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:08:04,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:08:05,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:08:05,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:08:05,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409166473] [2023-12-23 03:08:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409166473] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 03:08:05,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:08:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-23 03:08:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522430191] [2023-12-23 03:08:05,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:08:05,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:08:05,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:08:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:08:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:08:05,353 INFO L87 Difference]: Start difference. First operand 547 states and 926 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:08:10,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:08:14,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:08:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:08:15,747 INFO L93 Difference]: Finished difference Result 1318 states and 2229 transitions. [2023-12-23 03:08:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:08:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:08:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:08:15,753 INFO L225 Difference]: With dead ends: 1318 [2023-12-23 03:08:15,753 INFO L226 Difference]: Without dead ends: 986 [2023-12-23 03:08:15,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:08:15,755 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 266 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-23 03:08:15,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 491 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-23 03:08:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-12-23 03:08:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 549. [2023-12-23 03:08:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 400 states have (on average 1.62) internal successors, (648), 401 states have internal predecessors, (648), 140 states have call successors, (140), 8 states have call predecessors, (140), 8 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-23 03:08:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 928 transitions. [2023-12-23 03:08:15,802 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 928 transitions. Word has length 346 [2023-12-23 03:08:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:08:15,802 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 928 transitions. [2023-12-23 03:08:15,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:08:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 928 transitions. [2023-12-23 03:08:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:08:15,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:08:15,804 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:08:15,827 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 (15)] Forceful destruction successful, exit code 0 [2023-12-23 03:08:16,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:16,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:08:16,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:08:16,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1562919017, now seen corresponding path program 1 times [2023-12-23 03:08:16,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:08:16,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190634424] [2023-12-23 03:08:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:16,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:16,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:08:16,030 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:08:16,036 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 (16)] Waiting until timeout for monitored process [2023-12-23 03:08:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:16,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:08:16,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:08:17,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:17,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:08:17,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190634424] [2023-12-23 03:08:17,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190634424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:08:17,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907073800] [2023-12-23 03:08:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:17,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:08:17,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:08:17,764 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:08:17,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-23 03:08:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:19,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 03:08:19,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:08:20,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:08:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [907073800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:08:20,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:08:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-23 03:08:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822687473] [2023-12-23 03:08:20,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:08:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 03:08:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:08:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 03:08:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-23 03:08:20,413 INFO L87 Difference]: Start difference. First operand 549 states and 928 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:08:24,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:08:28,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:08:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:08:28,848 INFO L93 Difference]: Finished difference Result 1973 states and 3344 transitions. [2023-12-23 03:08:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 03:08:28,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:08:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:08:28,854 INFO L225 Difference]: With dead ends: 1973 [2023-12-23 03:08:28,854 INFO L226 Difference]: Without dead ends: 1425 [2023-12-23 03:08:28,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-23 03:08:28,857 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 458 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-23 03:08:28,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 833 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-23 03:08:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2023-12-23 03:08:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1095. [2023-12-23 03:08:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 798 states have (on average 1.6140350877192982) internal successors, (1288), 800 states have internal predecessors, (1288), 280 states have call successors, (280), 16 states have call predecessors, (280), 16 states have return successors, (280), 278 states have call predecessors, (280), 280 states have call successors, (280) [2023-12-23 03:08:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1848 transitions. [2023-12-23 03:08:28,919 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1848 transitions. Word has length 346 [2023-12-23 03:08:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:08:28,919 INFO L495 AbstractCegarLoop]: Abstraction has 1095 states and 1848 transitions. [2023-12-23 03:08:28,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:08:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1848 transitions. [2023-12-23 03:08:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:08:28,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:08:28,921 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:08:28,944 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 (16)] Forceful destruction successful, exit code 0 [2023-12-23 03:08:29,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-23 03:08:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 03:08:29,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:08:29,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:08:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash -256879723, now seen corresponding path program 1 times [2023-12-23 03:08:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:08:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462081943] [2023-12-23 03:08:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:29,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:08:29,337 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:08:29,339 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 (18)] Waiting until timeout for monitored process [2023-12-23 03:08:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:29,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:08:30,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:08:30,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:31,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:08:31,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462081943] [2023-12-23 03:08:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462081943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:08:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373076607] [2023-12-23 03:08:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:31,985 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:08:31,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:08:31,986 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:08:31,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-23 03:08:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:32,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 03:08:32,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 03:08:32,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:08:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373076607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:08:32,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:08:32,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-23 03:08:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670233976] [2023-12-23 03:08:32,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:08:32,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:08:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:08:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:08:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-23 03:08:32,632 INFO L87 Difference]: Start difference. First operand 1095 states and 1848 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:08:33,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:08:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:08:34,572 INFO L93 Difference]: Finished difference Result 2975 states and 4972 transitions. [2023-12-23 03:08:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:08:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 346 [2023-12-23 03:08:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:08:34,579 INFO L225 Difference]: With dead ends: 2975 [2023-12-23 03:08:34,579 INFO L226 Difference]: Without dead ends: 1881 [2023-12-23 03:08:34,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-23 03:08:34,582 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 193 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-23 03:08:34,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 679 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-23 03:08:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2023-12-23 03:08:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1869. [2023-12-23 03:08:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1300 states have (on average 1.5538461538461539) internal successors, (2020), 1308 states have internal predecessors, (2020), 536 states have call successors, (536), 32 states have call predecessors, (536), 32 states have return successors, (536), 528 states have call predecessors, (536), 536 states have call successors, (536) [2023-12-23 03:08:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 3092 transitions. [2023-12-23 03:08:34,709 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 3092 transitions. Word has length 346 [2023-12-23 03:08:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:08:34,710 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 3092 transitions. [2023-12-23 03:08:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 03:08:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 3092 transitions. [2023-12-23 03:08:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-23 03:08:34,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:08:34,716 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:08:34,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-23 03:08:34,943 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 (18)] Forceful destruction successful, exit code 0 [2023-12-23 03:08:35,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:35,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:08:35,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:08:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1737264983, now seen corresponding path program 1 times [2023-12-23 03:08:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:08:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941962097] [2023-12-23 03:08:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:08:35,132 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:08:35,137 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 (20)] Waiting until timeout for monitored process [2023-12-23 03:08:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:35,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:08:35,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:08:36,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:36,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:08:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941962097] [2023-12-23 03:08:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941962097] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:08:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [423886813] [2023-12-23 03:08:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:36,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:08:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:08:36,719 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:08:36,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-23 03:08:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:38,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:08:38,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 1902 proven. 30 refuted. 0 times theorem prover too weak. 4008 trivial. 0 not checked. [2023-12-23 03:08:38,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:38,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [423886813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:08:38,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:08:38,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2023-12-23 03:08:38,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514256617] [2023-12-23 03:08:38,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:08:38,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 03:08:38,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:08:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 03:08:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-23 03:08:38,688 INFO L87 Difference]: Start difference. First operand 1869 states and 3092 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 3 states have call successors, (80), 3 states have call predecessors, (80), 4 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-12-23 03:08:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:08:43,935 INFO L93 Difference]: Finished difference Result 4958 states and 8061 transitions. [2023-12-23 03:08:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-23 03:08:43,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 3 states have call successors, (80), 3 states have call predecessors, (80), 4 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 346 [2023-12-23 03:08:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:08:43,947 INFO L225 Difference]: With dead ends: 4958 [2023-12-23 03:08:43,947 INFO L226 Difference]: Without dead ends: 3090 [2023-12-23 03:08:43,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2023-12-23 03:08:43,952 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 549 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-23 03:08:43,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 925 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-23 03:08:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2023-12-23 03:08:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 1543. [2023-12-23 03:08:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1086 states have (on average 1.5082872928176796) internal successors, (1638), 1090 states have internal predecessors, (1638), 416 states have call successors, (416), 40 states have call predecessors, (416), 40 states have return successors, (416), 412 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-23 03:08:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2470 transitions. [2023-12-23 03:08:44,079 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2470 transitions. Word has length 346 [2023-12-23 03:08:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:08:44,080 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2470 transitions. [2023-12-23 03:08:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 3 states have call successors, (80), 3 states have call predecessors, (80), 4 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-12-23 03:08:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2470 transitions. [2023-12-23 03:08:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-23 03:08:44,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:08:44,082 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:08:44,122 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 (20)] Ended with exit code 0 [2023-12-23 03:08:44,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-23 03:08:44,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 03:08:44,532 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:08:44,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:08:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash 565009200, now seen corresponding path program 1 times [2023-12-23 03:08:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:08:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380285154] [2023-12-23 03:08:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:44,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:08:44,535 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:08:44,556 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 (22)] Waiting until timeout for monitored process [2023-12-23 03:08:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:45,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:08:45,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3024 proven. 81 refuted. 0 times theorem prover too weak. 2835 trivial. 0 not checked. [2023-12-23 03:08:45,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-12-23 03:08:46,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:08:46,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380285154] [2023-12-23 03:08:46,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380285154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 03:08:46,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:08:46,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 03:08:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970191218] [2023-12-23 03:08:46,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:08:46,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 03:08:46,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:08:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 03:08:46,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:08:46,061 INFO L87 Difference]: Start difference. First operand 1543 states and 2470 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-23 03:08:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:08:47,781 INFO L93 Difference]: Finished difference Result 3197 states and 5043 transitions. [2023-12-23 03:08:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 03:08:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 348 [2023-12-23 03:08:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:08:47,802 INFO L225 Difference]: With dead ends: 3197 [2023-12-23 03:08:47,802 INFO L226 Difference]: Without dead ends: 1655 [2023-12-23 03:08:47,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 688 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-23 03:08:47,806 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 388 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-23 03:08:47,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 494 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-23 03:08:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2023-12-23 03:08:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1575. [2023-12-23 03:08:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1110 states have (on average 1.4900900900900902) internal successors, (1654), 1114 states have internal predecessors, (1654), 416 states have call successors, (416), 48 states have call predecessors, (416), 48 states have return successors, (416), 412 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-23 03:08:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2486 transitions. [2023-12-23 03:08:47,920 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2486 transitions. Word has length 348 [2023-12-23 03:08:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:08:47,920 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2486 transitions. [2023-12-23 03:08:47,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-23 03:08:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2486 transitions. [2023-12-23 03:08:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-23 03:08:47,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:08:47,922 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:08:47,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-23 03:08:48,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:48,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:08:48,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:08:48,144 INFO L85 PathProgramCache]: Analyzing trace with hash 823174638, now seen corresponding path program 1 times [2023-12-23 03:08:48,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:08:48,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687156193] [2023-12-23 03:08:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:48,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:08:48,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:08:48,146 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:08:48,148 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 (23)] Waiting until timeout for monitored process [2023-12-23 03:08:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:48,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 03:08:48,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 1789 proven. 270 refuted. 0 times theorem prover too weak. 3881 trivial. 0 not checked. [2023-12-23 03:08:51,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:08:52,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:08:52,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687156193] [2023-12-23 03:08:52,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687156193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:08:52,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1422956983] [2023-12-23 03:08:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:08:52,827 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:08:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:08:52,841 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:08:52,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-23 03:08:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:08:56,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-23 03:08:56,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:08:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3627 proven. 102 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2023-12-23 03:08:59,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:09:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1422956983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:09:01,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:09:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-23 03:09:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833726999] [2023-12-23 03:09:01,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:09:01,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-23 03:09:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:09:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-23 03:09:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2023-12-23 03:09:01,978 INFO L87 Difference]: Start difference. First operand 1575 states and 2486 transitions. Second operand has 20 states, 20 states have (on average 8.45) internal successors, (169), 19 states have internal predecessors, (169), 6 states have call successors, (110), 6 states have call predecessors, (110), 10 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) [2023-12-23 03:09:08,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:09:09,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:09:14,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:09:17,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:09:33,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:09:38,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:09:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:09:41,997 INFO L93 Difference]: Finished difference Result 6911 states and 10571 transitions. [2023-12-23 03:09:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-23 03:09:42,028 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 19 states have internal predecessors, (169), 6 states have call successors, (110), 6 states have call predecessors, (110), 10 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) Word has length 348 [2023-12-23 03:09:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:09:42,058 INFO L225 Difference]: With dead ends: 6911 [2023-12-23 03:09:42,059 INFO L226 Difference]: Without dead ends: 5337 [2023-12-23 03:09:42,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1054 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2220, Invalid=8700, Unknown=0, NotChecked=0, Total=10920 [2023-12-23 03:09:42,067 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1101 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 856 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2023-12-23 03:09:42,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 2714 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 2703 Invalid, 2 Unknown, 0 Unchecked, 33.1s Time] [2023-12-23 03:09:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2023-12-23 03:09:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 4773. [2023-12-23 03:09:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 3264 states have (on average 1.446078431372549) internal successors, (4720), 3288 states have internal predecessors, (4720), 1320 states have call successors, (1320), 188 states have call predecessors, (1320), 188 states have return successors, (1320), 1296 states have call predecessors, (1320), 1320 states have call successors, (1320) [2023-12-23 03:09:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7360 transitions. [2023-12-23 03:09:42,599 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7360 transitions. Word has length 348 [2023-12-23 03:09:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:09:42,599 INFO L495 AbstractCegarLoop]: Abstraction has 4773 states and 7360 transitions. [2023-12-23 03:09:42,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 19 states have internal predecessors, (169), 6 states have call successors, (110), 6 states have call predecessors, (110), 10 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) [2023-12-23 03:09:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7360 transitions. [2023-12-23 03:09:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-23 03:09:42,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:09:42,603 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:09:42,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-12-23 03:09:42,833 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 (23)] Forceful destruction successful, exit code 0 [2023-12-23 03:09:43,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:09:43,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:09:43,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:09:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash -459731856, now seen corresponding path program 1 times [2023-12-23 03:09:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:09:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142098271] [2023-12-23 03:09:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:09:43,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:09:43,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:09:43,015 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:09:43,036 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 (25)] Waiting until timeout for monitored process [2023-12-23 03:09:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:09:43,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 03:09:43,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:09:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:09:44,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:10:03,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:10:03,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142098271] [2023-12-23 03:10:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142098271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:10:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [515801210] [2023-12-23 03:10:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:10:03,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:10:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:10:03,162 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:10:03,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-23 03:10:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:10:05,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 03:10:05,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:10:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3012 proven. 75 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-12-23 03:10:06,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:10:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [515801210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:10:17,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:10:17,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-23 03:10:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624443643] [2023-12-23 03:10:17,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:10:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 03:10:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:10:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 03:10:17,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-23 03:10:17,991 INFO L87 Difference]: Start difference. First operand 4773 states and 7360 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 03:10:25,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:10:29,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:10:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:10:34,002 INFO L93 Difference]: Finished difference Result 8530 states and 12934 transitions. [2023-12-23 03:10:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-23 03:10:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 348 [2023-12-23 03:10:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:10:34,024 INFO L225 Difference]: With dead ends: 8530 [2023-12-23 03:10:34,024 INFO L226 Difference]: Without dead ends: 6764 [2023-12-23 03:10:34,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2023-12-23 03:10:34,028 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 368 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-23 03:10:34,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1144 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-23 03:10:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2023-12-23 03:10:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 4773. [2023-12-23 03:10:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 3264 states have (on average 1.4436274509803921) internal successors, (4712), 3288 states have internal predecessors, (4712), 1320 states have call successors, (1320), 188 states have call predecessors, (1320), 188 states have return successors, (1320), 1296 states have call predecessors, (1320), 1320 states have call successors, (1320) [2023-12-23 03:10:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7352 transitions. [2023-12-23 03:10:34,610 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7352 transitions. Word has length 348 [2023-12-23 03:10:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:10:34,610 INFO L495 AbstractCegarLoop]: Abstraction has 4773 states and 7352 transitions. [2023-12-23 03:10:34,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 03:10:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7352 transitions. [2023-12-23 03:10:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-23 03:10:34,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:10:34,613 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:10:34,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-12-23 03:10:34,859 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 (25)] Forceful destruction successful, exit code 0 [2023-12-23 03:10:35,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:10:35,052 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:10:35,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:10:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash -165619742, now seen corresponding path program 1 times [2023-12-23 03:10:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:10:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896437496] [2023-12-23 03:10:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:10:35,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:10:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:10:35,068 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:10:35,108 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 (27)] Waiting until timeout for monitored process [2023-12-23 03:10:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:10:37,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-23 03:10:37,060 INFO L285 TraceCheckSpWp]: Computing forward predicates...