/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-24.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:09:25,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:09:25,627 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 02:09:25,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:09:25,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:09:25,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:09:25,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:09:25,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:09:25,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:09:25,674 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:09:25,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:09:25,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:09:25,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:09:25,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:09:25,677 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:09:25,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:09:25,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:09:25,678 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:09:25,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:09:25,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:09:25,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:09:25,679 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:09:25,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:09:25,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:09:25,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:09:25,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:09:25,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:09:25,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:09:25,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:09:25,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:09:25,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:09:25,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:09:25,683 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:09:25,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:09:25,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:09:25,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:09:25,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:09:25,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:09:25,905 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:09:25,907 INFO L431 ainManager$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-24.i [2023-12-23 02:09:26,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:09:27,165 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:09:27,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-24.i [2023-12-23 02:09:27,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ce0a076/62fb6a9889df4efd938445d66a21b67b/FLAGad51c288a [2023-12-23 02:09:27,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ce0a076/62fb6a9889df4efd938445d66a21b67b [2023-12-23 02:09:27,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:09:27,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:09:27,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:09:27,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:09:27,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:09:27,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bebf4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27, skipping insertion in model container [2023-12-23 02:09:27,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:09:27,376 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-24.i[916,929] [2023-12-23 02:09:27,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:09:27,516 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:09:27,526 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-24.i[916,929] [2023-12-23 02:09:27,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:09:27,587 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:09:27,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27 WrapperNode [2023-12-23 02:09:27,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:09:27,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:09:27,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:09:27,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:09:27,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,646 INFO L138 Inliner]: procedures = 27, calls = 98, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 473 [2023-12-23 02:09:27,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:09:27,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:09:27,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:09:27,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:09:27,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,674 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 02:09:27,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:09:27,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:09:27,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:09:27,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:09:27,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (1/1) ... [2023-12-23 02:09:27,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:09:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:09:27,732 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 02:09:27,755 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 02:09:27,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:09:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:09:27,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:09:27,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:09:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:09:27,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:09:27,925 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:09:27,927 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:09:45,499 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:09:45,555 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:09:45,555 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:09:45,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:09:45 BoogieIcfgContainer [2023-12-23 02:09:45,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:09:45,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:09:45,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:09:45,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:09:45,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:09:27" (1/3) ... [2023-12-23 02:09:45,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef69d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:09:45, skipping insertion in model container [2023-12-23 02:09:45,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:09:27" (2/3) ... [2023-12-23 02:09:45,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef69d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:09:45, skipping insertion in model container [2023-12-23 02:09:45,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:09:45" (3/3) ... [2023-12-23 02:09:45,563 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-24.i [2023-12-23 02:09:45,576 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:09:45,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:09:45,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:09:45,630 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;@71b02fe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:09:45,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:09:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 120 states have internal predecessors, (180), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-23 02:09:45,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-23 02:09:45,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:09:45,656 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:45,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:09:45,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:09:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -444327973, now seen corresponding path program 1 times [2023-12-23 02:09:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:09:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856779444] [2023-12-23 02:09:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:09:45,674 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 02:09:45,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:09:45,676 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 02:09:45,681 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 02:09:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:09:46,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 02:09:46,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:09:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7124 proven. 0 refuted. 0 times theorem prover too weak. 7156 trivial. 0 not checked. [2023-12-23 02:09:46,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:09:46,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:09:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856779444] [2023-12-23 02:09:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856779444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:09:46,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:09:46,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:09:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518350884] [2023-12-23 02:09:46,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:09:46,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 02:09:46,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:09:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 02:09:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:09:46,875 INFO L87 Difference]: Start difference. First operand has 207 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 120 states have internal predecessors, (180), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-23 02:09:49,773 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 02:09:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:09:49,774 INFO L93 Difference]: Finished difference Result 411 states and 783 transitions. [2023-12-23 02:09:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 02:09:49,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 520 [2023-12-23 02:09:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:09:49,821 INFO L225 Difference]: With dead ends: 411 [2023-12-23 02:09:49,822 INFO L226 Difference]: Without dead ends: 205 [2023-12-23 02:09:49,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 519 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 02:09:49,829 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:09:49,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-23 02:09:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-23 02:09:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-12-23 02:09:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-23 02:09:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 344 transitions. [2023-12-23 02:09:49,907 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 344 transitions. Word has length 520 [2023-12-23 02:09:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:09:49,907 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 344 transitions. [2023-12-23 02:09:49,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-23 02:09:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 344 transitions. [2023-12-23 02:09:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-23 02:09:49,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:09:49,916 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:49,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 02:09:50,117 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 02:09:50,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:09:50,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:09:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -904821427, now seen corresponding path program 1 times [2023-12-23 02:09:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:09:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072063785] [2023-12-23 02:09:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:09:50,120 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 02:09:50,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:09:50,121 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 02:09:50,122 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 02:09:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:09:51,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:09:51,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:09:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 02:09:51,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:09:51,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:09:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072063785] [2023-12-23 02:09:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072063785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:09:51,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:09:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:09:51,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126647465] [2023-12-23 02:09:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:09:51,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:09:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:09:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:09:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:09:51,299 INFO L87 Difference]: Start difference. First operand 205 states and 344 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 02:09:54,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:09:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:09:54,147 INFO L93 Difference]: Finished difference Result 509 states and 856 transitions. [2023-12-23 02:09:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:09:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 520 [2023-12-23 02:09:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:09:54,152 INFO L225 Difference]: With dead ends: 509 [2023-12-23 02:09:54,152 INFO L226 Difference]: Without dead ends: 305 [2023-12-23 02:09:54,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:09:54,154 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 159 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:09:54,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 670 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-23 02:09:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-23 02:09:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2023-12-23 02:09:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 192 states have (on average 1.5364583333333333) internal successors, (295), 193 states have internal predecessors, (295), 107 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-23 02:09:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 509 transitions. [2023-12-23 02:09:54,183 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 509 transitions. Word has length 520 [2023-12-23 02:09:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:09:54,184 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 509 transitions. [2023-12-23 02:09:54,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 02:09:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 509 transitions. [2023-12-23 02:09:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-23 02:09:54,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:09:54,189 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:54,217 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 02:09:54,414 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 02:09:54,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:09:54,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:09:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash 328514121, now seen corresponding path program 1 times [2023-12-23 02:09:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:09:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440493727] [2023-12-23 02:09:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:09:54,417 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 02:09:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:09:54,419 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 02:09:54,449 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 02:09:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:09:55,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:09:55,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:09:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 3918 proven. 39 refuted. 0 times theorem prover too weak. 10323 trivial. 0 not checked. [2023-12-23 02:09:56,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:09:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 213 proven. 39 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-23 02:09:57,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:09:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440493727] [2023-12-23 02:09:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440493727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:09:57,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:09:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 02:09:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354853783] [2023-12-23 02:09:57,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:09:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:09:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:09:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:09:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:09:57,478 INFO L87 Difference]: Start difference. First operand 302 states and 509 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-23 02:10:02,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:10:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:10:05,029 INFO L93 Difference]: Finished difference Result 809 states and 1342 transitions. [2023-12-23 02:10:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 02:10:05,042 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), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 520 [2023-12-23 02:10:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:10:05,047 INFO L225 Difference]: With dead ends: 809 [2023-12-23 02:10:05,047 INFO L226 Difference]: Without dead ends: 508 [2023-12-23 02:10:05,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1032 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:10:05,049 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 529 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-23 02:10:05,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1134 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-23 02:10:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-23 02:10:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 450. [2023-12-23 02:10:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 251 states have (on average 1.402390438247012) internal successors, (352), 253 states have internal predecessors, (352), 192 states have call successors, (192), 6 states have call predecessors, (192), 6 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-23 02:10:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 736 transitions. [2023-12-23 02:10:05,132 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 736 transitions. Word has length 520 [2023-12-23 02:10:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:10:05,133 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 736 transitions. [2023-12-23 02:10:05,133 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), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-23 02:10:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 736 transitions. [2023-12-23 02:10:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-23 02:10:05,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:10:05,138 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:05,170 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 02:10:05,352 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 02:10:05,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:10:05,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:10:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash -951349557, now seen corresponding path program 1 times [2023-12-23 02:10:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:10:05,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251993892] [2023-12-23 02:10:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:10:05,354 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 02:10:05,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:10:05,360 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 02:10:05,364 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 02:10:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:10:06,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:10:06,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:10:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-23 02:10:14,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:10:14,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:10:14,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251993892] [2023-12-23 02:10:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251993892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:10:14,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:10:14,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:10:14,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215748116] [2023-12-23 02:10:14,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:10:14,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:10:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:10:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:10:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 02:10:14,264 INFO L87 Difference]: Start difference. First operand 450 states and 736 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 02:10:17,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:10:18,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:10:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:10:18,284 INFO L93 Difference]: Finished difference Result 1092 states and 1805 transitions. [2023-12-23 02:10:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:10:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 520 [2023-12-23 02:10:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:10:18,330 INFO L225 Difference]: With dead ends: 1092 [2023-12-23 02:10:18,330 INFO L226 Difference]: Without dead ends: 787 [2023-12-23 02:10:18,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 02:10:18,332 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 250 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:10:18,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1020 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-23 02:10:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-23 02:10:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 751. [2023-12-23 02:10:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 442 states have (on average 1.4434389140271493) internal successors, (638), 445 states have internal predecessors, (638), 299 states have call successors, (299), 9 states have call predecessors, (299), 9 states have return successors, (299), 296 states have call predecessors, (299), 299 states have call successors, (299) [2023-12-23 02:10:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1236 transitions. [2023-12-23 02:10:18,442 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1236 transitions. Word has length 520 [2023-12-23 02:10:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:10:18,443 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1236 transitions. [2023-12-23 02:10:18,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-23 02:10:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1236 transitions. [2023-12-23 02:10:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-23 02:10:18,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:10:18,449 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:18,475 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 02:10:18,660 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 02:10:18,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:10:18,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:10:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash 764857511, now seen corresponding path program 1 times [2023-12-23 02:10:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:10:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505790828] [2023-12-23 02:10:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:10:18,662 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 02:10:18,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:10:18,663 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 02:10:18,664 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 02:10:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:10:19,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:10:19,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:10:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 5062 proven. 195 refuted. 0 times theorem prover too weak. 9023 trivial. 0 not checked. [2023-12-23 02:10:22,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:10:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 57 proven. 195 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-23 02:10:24,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:10:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505790828] [2023-12-23 02:10:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505790828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:10:24,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:10:24,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 02:10:24,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97648271] [2023-12-23 02:10:24,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:10:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:10:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:10:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:10:24,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:10:24,129 INFO L87 Difference]: Start difference. First operand 751 states and 1236 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-23 02:10:29,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:10:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:10:31,451 INFO L93 Difference]: Finished difference Result 1503 states and 2463 transitions. [2023-12-23 02:10:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 02:10:31,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 521 [2023-12-23 02:10:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:10:31,456 INFO L225 Difference]: With dead ends: 1503 [2023-12-23 02:10:31,456 INFO L226 Difference]: Without dead ends: 897 [2023-12-23 02:10:31,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1034 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:10:31,459 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 383 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:10:31,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1290 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-23 02:10:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-23 02:10:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 771. [2023-12-23 02:10:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 457 states have (on average 1.4070021881838075) internal successors, (643), 460 states have internal predecessors, (643), 299 states have call successors, (299), 14 states have call predecessors, (299), 14 states have return successors, (299), 296 states have call predecessors, (299), 299 states have call successors, (299) [2023-12-23 02:10:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1241 transitions. [2023-12-23 02:10:31,544 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1241 transitions. Word has length 521 [2023-12-23 02:10:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:10:31,545 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1241 transitions. [2023-12-23 02:10:31,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-23 02:10:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1241 transitions. [2023-12-23 02:10:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-23 02:10:31,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:10:31,549 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:31,580 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 02:10:31,764 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 02:10:31,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:10:31,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:10:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -44489115, now seen corresponding path program 1 times [2023-12-23 02:10:31,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:10:31,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744813669] [2023-12-23 02:10:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:10:31,766 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 02:10:31,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:10:31,769 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 02:10:31,784 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 02:10:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:10:32,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-23 02:10:32,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:12:55,777 WARN L293 SmtUtils]: Spent 13.39s on a formula simplification that was a NOOP. DAG size: 116 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)