/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-70.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:48:25,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:48:25,142 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 02:48:25,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:48:25,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:48:25,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:48:25,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:48:25,186 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:48:25,186 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:48:25,186 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:48:25,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:48:25,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:48:25,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:48:25,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:48:25,188 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:48:25,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:48:25,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:48:25,188 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:48:25,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:48:25,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:48:25,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:48:25,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:48:25,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:48:25,190 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:48:25,190 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:48:25,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:48:25,191 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:48:25,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:48:25,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:48:25,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:48:25,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:48:25,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:48:25,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:48:25,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:48:25,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:48:25,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:48:25,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:48:25,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:48:25,193 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:48:25,193 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:48:25,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:48:25,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:48:25,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:48:25,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:48:25,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:48:25,194 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:48:25,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:48:25,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:48:25,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:48:25,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:48:25,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:48:25,397 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:48:25,398 INFO L431 ainManager$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-70.i [2023-12-23 02:48:26,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:48:26,688 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:48:26,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-70.i [2023-12-23 02:48:26,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46d050d12/a05b26ed8f47430b8d5b9c0cec64e2d3/FLAG82054485c [2023-12-23 02:48:26,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46d050d12/a05b26ed8f47430b8d5b9c0cec64e2d3 [2023-12-23 02:48:26,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:48:26,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:48:26,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:48:26,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:48:26,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:48:26,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:48:26" (1/1) ... [2023-12-23 02:48:26,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3925778e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:26, skipping insertion in model container [2023-12-23 02:48:26,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:48:26" (1/1) ... [2023-12-23 02:48:26,752 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:48:26,844 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-70.i[916,929] [2023-12-23 02:48:26,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:48:26,949 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:48:26,960 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-70.i[916,929] [2023-12-23 02:48:27,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:48:27,046 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:48:27,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27 WrapperNode [2023-12-23 02:48:27,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:48:27,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:48:27,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:48:27,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:48:27,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,127 INFO L138 Inliner]: procedures = 27, calls = 104, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 491 [2023-12-23 02:48:27,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:48:27,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:48:27,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:48:27,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:48:27,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,189 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 02:48:27,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:48:27,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:48:27,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:48:27,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:48:27,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (1/1) ... [2023-12-23 02:48:27,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:48:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:48:27,268 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 02:48:27,275 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 02:48:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:48:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:48:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:48:27,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:48:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:48:27,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:48:27,380 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:48:27,382 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:48:45,401 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:48:45,439 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:48:45,439 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:48:45,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:48:45 BoogieIcfgContainer [2023-12-23 02:48:45,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:48:45,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:48:45,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:48:45,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:48:45,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:48:26" (1/3) ... [2023-12-23 02:48:45,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6010e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:48:45, skipping insertion in model container [2023-12-23 02:48:45,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:48:27" (2/3) ... [2023-12-23 02:48:45,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6010e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:48:45, skipping insertion in model container [2023-12-23 02:48:45,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:48:45" (3/3) ... [2023-12-23 02:48:45,445 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-70.i [2023-12-23 02:48:45,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:48:45,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:48:45,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:48:45,498 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;@425e9ae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:48:45,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:48:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 117 states have (on average 1.4786324786324787) internal successors, (173), 118 states have internal predecessors, (173), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-23 02:48:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:48:45,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:48:45,532 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:45,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:48:45,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:48:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash -81309354, now seen corresponding path program 1 times [2023-12-23 02:48:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:48:45,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732647437] [2023-12-23 02:48:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:48:45,549 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 02:48:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:48:45,557 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 02:48:45,558 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 02:48:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:48:47,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 02:48:47,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:48:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 7496 proven. 0 refuted. 0 times theorem prover too weak. 8884 trivial. 0 not checked. [2023-12-23 02:48:47,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:48:47,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:48:47,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732647437] [2023-12-23 02:48:47,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732647437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:48:47,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:48:47,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:48:47,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528934607] [2023-12-23 02:48:47,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:48:47,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 02:48:47,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:48:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 02:48:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:48:47,485 INFO L87 Difference]: Start difference. First operand has 211 states, 117 states have (on average 1.4786324786324787) internal successors, (173), 118 states have internal predecessors, (173), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-23 02:48:51,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:48:51,712 INFO L93 Difference]: Finished difference Result 419 states and 799 transitions. [2023-12-23 02:48:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 02:48:51,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 548 [2023-12-23 02:48:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:48:51,764 INFO L225 Difference]: With dead ends: 419 [2023-12-23 02:48:51,764 INFO L226 Difference]: Without dead ends: 209 [2023-12-23 02:48:51,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 547 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 02:48:51,777 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:48:51,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-23 02:48:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-23 02:48:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-12-23 02:48:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 116 states have (on average 1.4310344827586208) internal successors, (166), 116 states have internal predecessors, (166), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-23 02:48:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 348 transitions. [2023-12-23 02:48:51,910 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 348 transitions. Word has length 548 [2023-12-23 02:48:51,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:48:51,911 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 348 transitions. [2023-12-23 02:48:51,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-23 02:48:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 348 transitions. [2023-12-23 02:48:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:48:51,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:48:51,928 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:51,987 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 02:48:52,152 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 02:48:52,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:48:52,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:48:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -29326138, now seen corresponding path program 1 times [2023-12-23 02:48:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:48:52,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355222440] [2023-12-23 02:48:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:48:52,156 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 02:48:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:48:52,158 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 02:48:52,162 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 02:48:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:48:53,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:48:53,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:49:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16380 trivial. 0 not checked. [2023-12-23 02:49:08,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:49:08,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:49:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355222440] [2023-12-23 02:49:08,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355222440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:49:08,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:49:08,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:49:08,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381498573] [2023-12-23 02:49:08,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:49:08,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:49:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:49:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:49:08,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:49:08,910 INFO L87 Difference]: Start difference. First operand 209 states and 348 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 1 states have call predecessors, (91), 1 states have call successors, (91) [2023-12-23 02:49:12,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:49:12,831 INFO L93 Difference]: Finished difference Result 625 states and 1042 transitions. [2023-12-23 02:49:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:49:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 1 states have call predecessors, (91), 1 states have call successors, (91) Word has length 548 [2023-12-23 02:49:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:49:12,848 INFO L225 Difference]: With dead ends: 625 [2023-12-23 02:49:12,848 INFO L226 Difference]: Without dead ends: 417 [2023-12-23 02:49:12,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:49:12,853 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 85 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:49:12,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 681 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-23 02:49:12,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-23 02:49:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 413. [2023-12-23 02:49:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 228 states have (on average 1.4210526315789473) internal successors, (324), 228 states have internal predecessors, (324), 182 states have call successors, (182), 2 states have call predecessors, (182), 2 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-23 02:49:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 688 transitions. [2023-12-23 02:49:12,908 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 688 transitions. Word has length 548 [2023-12-23 02:49:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:49:12,909 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 688 transitions. [2023-12-23 02:49:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 1 states have call predecessors, (91), 1 states have call successors, (91) [2023-12-23 02:49:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 688 transitions. [2023-12-23 02:49:12,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:49:12,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:49:12,913 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:12,954 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 02:49:13,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:49:13,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:49:13,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:49:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash -846974588, now seen corresponding path program 1 times [2023-12-23 02:49:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:49:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616926427] [2023-12-23 02:49:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:49:13,144 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 02:49:13,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:49:13,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:49:13,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 02:49:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:49:14,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:49:14,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:49:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 6948 proven. 189 refuted. 0 times theorem prover too weak. 9243 trivial. 0 not checked. [2023-12-23 02:49:25,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:49:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 81 proven. 189 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2023-12-23 02:49:29,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:49:29,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616926427] [2023-12-23 02:49:29,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616926427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:49:29,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:49:29,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:49:29,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812550688] [2023-12-23 02:49:29,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:49:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:49:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:49:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:49:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:49:29,939 INFO L87 Difference]: Start difference. First operand 413 states and 688 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-23 02:49:39,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:49:39,783 INFO L93 Difference]: Finished difference Result 835 states and 1381 transitions. [2023-12-23 02:49:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 02:49:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 548 [2023-12-23 02:49:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:49:39,829 INFO L225 Difference]: With dead ends: 835 [2023-12-23 02:49:39,829 INFO L226 Difference]: Without dead ends: 423 [2023-12-23 02:49:39,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:49:39,831 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 127 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:49:39,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 532 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-23 02:49:39,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-23 02:49:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2023-12-23 02:49:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 232 states have (on average 1.375) internal successors, (319), 232 states have internal predecessors, (319), 182 states have call successors, (182), 4 states have call predecessors, (182), 4 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-23 02:49:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 683 transitions. [2023-12-23 02:49:39,869 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 683 transitions. Word has length 548 [2023-12-23 02:49:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:49:39,870 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 683 transitions. [2023-12-23 02:49:39,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-23 02:49:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 683 transitions. [2023-12-23 02:49:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:49:39,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:49:39,873 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:39,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 02:49:40,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:49:40,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:49:40,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:49:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash 174093766, now seen corresponding path program 1 times [2023-12-23 02:49:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:49:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893232006] [2023-12-23 02:49:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:49:40,091 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 02:49:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:49:40,092 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 02:49:40,093 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 02:49:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:49:41,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:49:41,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:49:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 1638 proven. 12 refuted. 0 times theorem prover too weak. 14730 trivial. 0 not checked. [2023-12-23 02:49:43,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:49:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 258 proven. 12 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2023-12-23 02:49:45,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:49:45,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893232006] [2023-12-23 02:49:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893232006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:49:45,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:49:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 02:49:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223726451] [2023-12-23 02:49:45,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:49:45,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:49:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:49:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:49:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:49:45,816 INFO L87 Difference]: Start difference. First operand 419 states and 683 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-23 02:49:57,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:50:05,426 INFO L93 Difference]: Finished difference Result 1287 states and 2075 transitions. [2023-12-23 02:50:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 02:50:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 548 [2023-12-23 02:50:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:50:05,431 INFO L225 Difference]: With dead ends: 1287 [2023-12-23 02:50:05,431 INFO L226 Difference]: Without dead ends: 869 [2023-12-23 02:50:05,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:50:05,436 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 407 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:50:05,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1269 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-12-23 02:50:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2023-12-23 02:50:05,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 851. [2023-12-23 02:50:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 474 states have (on average 1.3628691983122363) internal successors, (646), 474 states have internal predecessors, (646), 364 states have call successors, (364), 12 states have call predecessors, (364), 12 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2023-12-23 02:50:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1374 transitions. [2023-12-23 02:50:05,540 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1374 transitions. Word has length 548 [2023-12-23 02:50:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:50:05,541 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1374 transitions. [2023-12-23 02:50:05,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-23 02:50:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1374 transitions. [2023-12-23 02:50:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:50:05,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:50:05,544 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:05,590 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 02:50:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:50:05,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:50:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:50:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 432259204, now seen corresponding path program 1 times [2023-12-23 02:50:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:50:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228937695] [2023-12-23 02:50:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:50:05,774 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 02:50:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:50:05,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:50:05,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 02:50:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:50:07,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:50:07,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:50:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 1140 proven. 261 refuted. 0 times theorem prover too weak. 14979 trivial. 0 not checked. [2023-12-23 02:50:22,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:50:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 9 proven. 261 refuted. 0 times theorem prover too weak. 16110 trivial. 0 not checked. [2023-12-23 02:50:28,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:50:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228937695] [2023-12-23 02:50:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228937695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:50:28,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:50:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:50:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872508521] [2023-12-23 02:50:28,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:50:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:50:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:50:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:50:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:50:28,236 INFO L87 Difference]: Start difference. First operand 851 states and 1374 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-23 02:50:39,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:50:39,482 INFO L93 Difference]: Finished difference Result 1733 states and 2775 transitions. [2023-12-23 02:50:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 02:50:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) Word has length 548 [2023-12-23 02:50:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:50:39,531 INFO L225 Difference]: With dead ends: 1733 [2023-12-23 02:50:39,531 INFO L226 Difference]: Without dead ends: 883 [2023-12-23 02:50:39,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:50:39,534 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 84 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:50:39,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 543 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-23 02:50:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-23 02:50:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 867. [2023-12-23 02:50:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 486 states have (on average 1.345679012345679) internal successors, (654), 486 states have internal predecessors, (654), 364 states have call successors, (364), 16 states have call predecessors, (364), 16 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2023-12-23 02:50:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1382 transitions. [2023-12-23 02:50:39,613 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1382 transitions. Word has length 548 [2023-12-23 02:50:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:50:39,614 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1382 transitions. [2023-12-23 02:50:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-23 02:50:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1382 transitions. [2023-12-23 02:50:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:50:39,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:50:39,636 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:39,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 02:50:39,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:50:39,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:50:39,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:50:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash 825286214, now seen corresponding path program 1 times [2023-12-23 02:50:39,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:50:39,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071061807] [2023-12-23 02:50:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:50:39,839 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 02:50:39,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:50:39,849 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 02:50:39,881 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 02:50:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:50:41,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 02:50:41,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:51:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 3588 proven. 237 refuted. 0 times theorem prover too weak. 12555 trivial. 0 not checked. [2023-12-23 02:51:43,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:51:50,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:51:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071061807] [2023-12-23 02:51:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071061807] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:51:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839443605] [2023-12-23 02:51:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:51:50,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:51:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:51:50,637 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 02:51:50,638 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 02:51:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:51:56,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 02:51:56,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:52:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 3588 proven. 237 refuted. 0 times theorem prover too weak. 12555 trivial. 0 not checked. [2023-12-23 02:52:56,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:53:02,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839443605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:53:02,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:53:02,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-23 02:53:02,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354664865] [2023-12-23 02:53:02,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:53:02,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 02:53:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:53:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 02:53:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-23 02:53:02,387 INFO L87 Difference]: Start difference. First operand 867 states and 1382 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (91), 2 states have call predecessors, (91), 3 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-23 02:53:21,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:53:25,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:53:27,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:53:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:53:45,442 INFO L93 Difference]: Finished difference Result 2866 states and 4568 transitions. [2023-12-23 02:53:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-23 02:53:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (91), 2 states have call predecessors, (91), 3 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 548 [2023-12-23 02:53:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:53:45,455 INFO L225 Difference]: With dead ends: 2866 [2023-12-23 02:53:45,456 INFO L226 Difference]: Without dead ends: 2000 [2023-12-23 02:53:45,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2064 GetRequests, 2043 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-12-23 02:53:45,460 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 569 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2023-12-23 02:53:45,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 2096 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 40.0s Time] [2023-12-23 02:53:45,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-12-23 02:53:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1158. [2023-12-23 02:53:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 681 states have (on average 1.368575624082232) internal successors, (932), 681 states have internal predecessors, (932), 455 states have call successors, (455), 21 states have call predecessors, (455), 21 states have return successors, (455), 455 states have call predecessors, (455), 455 states have call successors, (455) [2023-12-23 02:53:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1842 transitions. [2023-12-23 02:53:45,651 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1842 transitions. Word has length 548 [2023-12-23 02:53:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:53:45,652 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 1842 transitions. [2023-12-23 02:53:45,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (91), 2 states have call predecessors, (91), 3 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-23 02:53:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1842 transitions. [2023-12-23 02:53:45,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2023-12-23 02:53:45,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:53:45,655 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:45,703 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 02:53:45,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-23 02:53:46,080 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 02:53:46,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:53:46,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:53:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash 882544516, now seen corresponding path program 1 times [2023-12-23 02:53:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:53:46,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182050402] [2023-12-23 02:53:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:53:46,082 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 02:53:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:53:46,083 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 02:53:46,090 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 02:53:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:53:47,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-23 02:53:47,984 INFO L285 TraceCheckSpWp]: Computing forward predicates...