/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-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:36:56,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:36:56,435 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 02:36:56,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:36:56,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:36:56,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:36:56,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:36:56,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:36:56,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:36:56,466 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:36:56,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:36:56,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:36:56,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:36:56,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:36:56,468 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:36:56,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:36:56,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:36:56,469 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:36:56,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:36:56,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:36:56,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:36:56,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:36:56,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:36:56,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:36:56,470 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:36:56,471 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:36:56,471 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:36:56,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:36:56,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:36:56,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:36:56,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:36:56,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:36:56,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:36:56,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:36:56,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:36:56,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:36:56,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:36:56,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:36:56,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:36:56,474 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:36:56,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:36:56,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:36:56,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:36:56,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:36:56,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:36:56,695 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:36:56,696 INFO L431 ainManager$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-56.i [2023-12-23 02:36:57,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:36:57,997 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:36:57,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2023-12-23 02:36:58,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d665c899f/c1ac9865fde944eca941a2df49728ff1/FLAG1a57172e7 [2023-12-23 02:36:58,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d665c899f/c1ac9865fde944eca941a2df49728ff1 [2023-12-23 02:36:58,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:36:58,023 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:36:58,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:36:58,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:36:58,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:36:58,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293eb459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58, skipping insertion in model container [2023-12-23 02:36:58,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,080 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:36:58,210 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-56.i[916,929] [2023-12-23 02:36:58,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:36:58,363 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:36:58,371 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-56.i[916,929] [2023-12-23 02:36:58,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:36:58,461 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:36:58,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58 WrapperNode [2023-12-23 02:36:58,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:36:58,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:36:58,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:36:58,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:36:58,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,513 INFO L138 Inliner]: procedures = 27, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 453 [2023-12-23 02:36:58,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:36:58,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:36:58,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:36:58,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:36:58,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,568 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 02:36:58,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:36:58,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:36:58,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:36:58,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:36:58,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (1/1) ... [2023-12-23 02:36:58,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:36:58,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:36:58,674 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 02:36:58,724 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 02:36:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:36:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:36:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:36:58,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:36:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:36:58,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:36:58,864 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:36:58,865 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:37:31,435 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:37:31,496 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:37:31,497 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:37:31,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:37:31 BoogieIcfgContainer [2023-12-23 02:37:31,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:37:31,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:37:31,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:37:31,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:37:31,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:36:58" (1/3) ... [2023-12-23 02:37:31,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b778a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:37:31, skipping insertion in model container [2023-12-23 02:37:31,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:36:58" (2/3) ... [2023-12-23 02:37:31,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b778a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:37:31, skipping insertion in model container [2023-12-23 02:37:31,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:37:31" (3/3) ... [2023-12-23 02:37:31,511 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2023-12-23 02:37:31,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:37:31,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:37:31,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:37:31,587 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;@787b0256, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:37:31,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:37:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 114 states have (on average 1.4912280701754386) internal successors, (170), 115 states have internal predecessors, (170), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 02:37:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-23 02:37:31,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:37:31,619 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:31,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:37:31,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:37:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1757321936, now seen corresponding path program 1 times [2023-12-23 02:37:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:37:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037536229] [2023-12-23 02:37:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:37:31,639 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 02:37:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:37:31,641 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 02:37:31,648 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 02:37:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:37:33,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 02:37:33,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:37:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5310 proven. 0 refuted. 0 times theorem prover too weak. 7330 trivial. 0 not checked. [2023-12-23 02:37:33,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:37:33,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:37:33,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037536229] [2023-12-23 02:37:33,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037536229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:37:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:37:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:37:33,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585365966] [2023-12-23 02:37:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:37:33,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 02:37:33,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:37:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 02:37:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:37:33,433 INFO L87 Difference]: Start difference. First operand has 197 states, 114 states have (on average 1.4912280701754386) internal successors, (170), 115 states have internal predecessors, (170), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:37:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:37:33,587 INFO L93 Difference]: Finished difference Result 391 states and 738 transitions. [2023-12-23 02:37:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 02:37:33,596 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 491 [2023-12-23 02:37:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:37:33,603 INFO L225 Difference]: With dead ends: 391 [2023-12-23 02:37:33,604 INFO L226 Difference]: Without dead ends: 195 [2023-12-23 02:37:33,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 490 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 02:37:33,610 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:37:33,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 02:37:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-23 02:37:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-12-23 02:37:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 113 states have (on average 1.4601769911504425) internal successors, (165), 113 states have internal predecessors, (165), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 02:37:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 325 transitions. [2023-12-23 02:37:33,664 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 325 transitions. Word has length 491 [2023-12-23 02:37:33,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:37:33,664 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 325 transitions. [2023-12-23 02:37:33,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:37:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 325 transitions. [2023-12-23 02:37:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-23 02:37:33,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:37:33,674 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:33,711 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 02:37:33,900 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 02:37:33,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:37:33,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:37:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1412064696, now seen corresponding path program 1 times [2023-12-23 02:37:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:37:33,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730001344] [2023-12-23 02:37:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:37:33,903 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 02:37:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:37:33,905 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 02:37:33,907 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 02:37:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:37:35,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:37:35,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:37:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:37:36,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:37:36,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:37:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730001344] [2023-12-23 02:37:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730001344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:37:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:37:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:37:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162580499] [2023-12-23 02:37:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:37:36,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:37:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:37:36,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:37:36,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:37:36,102 INFO L87 Difference]: Start difference. First operand 195 states and 325 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:37:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:37:38,082 INFO L93 Difference]: Finished difference Result 504 states and 842 transitions. [2023-12-23 02:37:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:37:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 491 [2023-12-23 02:37:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:37:38,094 INFO L225 Difference]: With dead ends: 504 [2023-12-23 02:37:38,094 INFO L226 Difference]: Without dead ends: 310 [2023-12-23 02:37:38,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 489 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 02:37:38,097 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 180 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:37:38,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 631 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-23 02:37:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-23 02:37:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 307. [2023-12-23 02:37:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 186 states have (on average 1.4731182795698925) internal successors, (274), 187 states have internal predecessors, (274), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-23 02:37:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 510 transitions. [2023-12-23 02:37:38,140 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 510 transitions. Word has length 491 [2023-12-23 02:37:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:37:38,141 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 510 transitions. [2023-12-23 02:37:38,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:37:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 510 transitions. [2023-12-23 02:37:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-23 02:37:38,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:37:38,150 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:38,188 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 (3)] Ended with exit code 0 [2023-12-23 02:37:38,372 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 02:37:38,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:37:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:37:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1957094233, now seen corresponding path program 1 times [2023-12-23 02:37:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:37:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132909607] [2023-12-23 02:37:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:37:38,375 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 02:37:38,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:37:38,377 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 02:37:38,380 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 02:37:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:37:39,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 02:37:39,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:37:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6312 proven. 255 refuted. 0 times theorem prover too weak. 6073 trivial. 0 not checked. [2023-12-23 02:37:54,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:37:58,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:37:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132909607] [2023-12-23 02:37:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132909607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:37:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569270044] [2023-12-23 02:37:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:37:58,435 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:37:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:37:58,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:37:58,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 02:37:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:37:59,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:37:59,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:37:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:37:59,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:37:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1569270044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:37:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 02:37:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-12-23 02:37:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288253442] [2023-12-23 02:37:59,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:37:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:37:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:37:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:37:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:37:59,977 INFO L87 Difference]: Start difference. First operand 307 states and 510 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:38:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:38:01,382 INFO L93 Difference]: Finished difference Result 620 states and 1024 transitions. [2023-12-23 02:38:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:38:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 492 [2023-12-23 02:38:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:38:01,395 INFO L225 Difference]: With dead ends: 620 [2023-12-23 02:38:01,395 INFO L226 Difference]: Without dead ends: 314 [2023-12-23 02:38:01,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:38:01,397 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 183 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 02:38:01,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 727 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 02:38:01,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-23 02:38:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 234. [2023-12-23 02:38:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 151 states have (on average 1.4768211920529801) internal successors, (223), 151 states have internal predecessors, (223), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 02:38:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 383 transitions. [2023-12-23 02:38:01,414 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 383 transitions. Word has length 492 [2023-12-23 02:38:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:38:01,415 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 383 transitions. [2023-12-23 02:38:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:38:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 383 transitions. [2023-12-23 02:38:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-23 02:38:01,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:38:01,418 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:01,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-23 02:38:01,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-23 02:38:01,833 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 02:38:01,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:38:01,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:38:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1316804709, now seen corresponding path program 1 times [2023-12-23 02:38:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:38:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820634823] [2023-12-23 02:38:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:38:01,854 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 02:38:01,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:38:01,855 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 02:38:01,856 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 02:38:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:38:03,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 02:38:03,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:38:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6312 proven. 255 refuted. 0 times theorem prover too weak. 6073 trivial. 0 not checked. [2023-12-23 02:38:17,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:38:20,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:38:20,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820634823] [2023-12-23 02:38:20,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820634823] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:38:20,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2051905071] [2023-12-23 02:38:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:38:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:38:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:38:20,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:38:20,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 02:38:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:38:25,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 02:38:25,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:38:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:38:37,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:38:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2051905071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:38:37,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 02:38:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2023-12-23 02:38:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291205926] [2023-12-23 02:38:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:38:37,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:38:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:38:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:38:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-23 02:38:37,158 INFO L87 Difference]: Start difference. First operand 234 states and 383 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:38:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:38:39,849 INFO L93 Difference]: Finished difference Result 886 states and 1450 transitions. [2023-12-23 02:38:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:38:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 492 [2023-12-23 02:38:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:38:39,854 INFO L225 Difference]: With dead ends: 886 [2023-12-23 02:38:39,854 INFO L226 Difference]: Without dead ends: 653 [2023-12-23 02:38:39,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1174 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-23 02:38:39,856 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 352 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-23 02:38:39,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1061 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-23 02:38:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-12-23 02:38:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 463. [2023-12-23 02:38:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 298 states have (on average 1.4731543624161074) internal successors, (439), 298 states have internal predecessors, (439), 160 states have call successors, (160), 4 states have call predecessors, (160), 4 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-23 02:38:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 759 transitions. [2023-12-23 02:38:39,899 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 759 transitions. Word has length 492 [2023-12-23 02:38:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:38:39,904 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 759 transitions. [2023-12-23 02:38:39,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:38:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 759 transitions. [2023-12-23 02:38:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-23 02:38:39,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:38:39,909 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:39,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-23 02:38:40,160 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 (6)] Ended with exit code 0 [2023-12-23 02:38:40,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 02:38:40,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:38:40,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:38:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash -984017881, now seen corresponding path program 1 times [2023-12-23 02:38:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:38:40,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660799337] [2023-12-23 02:38:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:38:40,329 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 02:38:40,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:38:40,331 INFO L229 MonitoredProcess]: Starting monitored process 8 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 02:38:40,332 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 (8)] Waiting until timeout for monitored process [2023-12-23 02:38:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:38:41,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 02:38:41,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:38:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6312 proven. 255 refuted. 0 times theorem prover too weak. 6073 trivial. 0 not checked. [2023-12-23 02:38:55,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:38:59,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:38:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660799337] [2023-12-23 02:38:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660799337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:38:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1810120824] [2023-12-23 02:38:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:38:59,206 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:38:59,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:38:59,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:38:59,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 02:39:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:39:04,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:39:04,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:39:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:39:04,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:39:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1810120824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:39:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 02:39:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-12-23 02:39:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693467161] [2023-12-23 02:39:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:39:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:39:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:39:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:39:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:39:04,780 INFO L87 Difference]: Start difference. First operand 463 states and 759 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:39:06,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:39:08,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:39:12,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:39:17,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:39:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:39:17,324 INFO L93 Difference]: Finished difference Result 1195 states and 1967 transitions. [2023-12-23 02:39:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:39:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 492 [2023-12-23 02:39:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:39:17,328 INFO L225 Difference]: With dead ends: 1195 [2023-12-23 02:39:17,329 INFO L226 Difference]: Without dead ends: 733 [2023-12-23 02:39:17,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:39:17,330 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 161 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-23 02:39:17,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 617 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2023-12-23 02:39:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-23 02:39:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 729. [2023-12-23 02:39:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 510 states have (on average 1.5254901960784313) internal successors, (778), 512 states have internal predecessors, (778), 212 states have call successors, (212), 6 states have call predecessors, (212), 6 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-23 02:39:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1202 transitions. [2023-12-23 02:39:17,374 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1202 transitions. Word has length 492 [2023-12-23 02:39:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:39:17,375 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1202 transitions. [2023-12-23 02:39:17,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:39:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1202 transitions. [2023-12-23 02:39:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-23 02:39:17,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:39:17,379 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:17,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 02:39:17,636 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 (8)] Forceful destruction successful, exit code 0 [2023-12-23 02:39:17,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /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 02:39:17,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:39:17,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:39:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1606203695, now seen corresponding path program 1 times [2023-12-23 02:39:17,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:39:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66114252] [2023-12-23 02:39:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:39:17,783 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 02:39:17,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:39:17,784 INFO L229 MonitoredProcess]: Starting monitored process 10 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 02:39:17,813 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 (10)] Waiting until timeout for monitored process [2023-12-23 02:39:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:39:18,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 02:39:18,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:39:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6312 proven. 255 refuted. 0 times theorem prover too weak. 6073 trivial. 0 not checked. [2023-12-23 02:39:32,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:39:35,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:39:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66114252] [2023-12-23 02:39:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66114252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:39:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1763456560] [2023-12-23 02:39:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:39:35,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:39:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:39:35,687 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:39:35,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 02:39:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:39:40,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 02:39:40,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:39:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6127 proven. 93 refuted. 0 times theorem prover too weak. 6420 trivial. 0 not checked. [2023-12-23 02:39:45,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:39:46,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1763456560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:39:46,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:39:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2023-12-23 02:39:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412028374] [2023-12-23 02:39:46,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:39:46,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 02:39:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:39:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 02:39:46,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2023-12-23 02:39:46,758 INFO L87 Difference]: Start difference. First operand 729 states and 1202 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 4 states have call successors, (109), 4 states have call predecessors, (109), 6 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2023-12-23 02:40:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:40:03,601 INFO L93 Difference]: Finished difference Result 1354 states and 2210 transitions. [2023-12-23 02:40:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-23 02:40:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 4 states have call successors, (109), 4 states have call predecessors, (109), 6 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) Word has length 492 [2023-12-23 02:40:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:40:03,606 INFO L225 Difference]: With dead ends: 1354 [2023-12-23 02:40:03,607 INFO L226 Difference]: Without dead ends: 626 [2023-12-23 02:40:03,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1220 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2023-12-23 02:40:03,609 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 739 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:40:03,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 954 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-23 02:40:03,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-23 02:40:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 612. [2023-12-23 02:40:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 449 states have (on average 1.4966592427616927) internal successors, (672), 452 states have internal predecessors, (672), 154 states have call successors, (154), 8 states have call predecessors, (154), 8 states have return successors, (154), 151 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-23 02:40:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 980 transitions. [2023-12-23 02:40:03,638 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 980 transitions. Word has length 492 [2023-12-23 02:40:03,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:40:03,638 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 980 transitions. [2023-12-23 02:40:03,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 4 states have call successors, (109), 4 states have call predecessors, (109), 6 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2023-12-23 02:40:03,639 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 980 transitions. [2023-12-23 02:40:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-23 02:40:03,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:40:03,642 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:03,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 02:40:03,887 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 (10)] Forceful destruction successful, exit code 0 [2023-12-23 02:40:04,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /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 02:40:04,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:40:04,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:40:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1566272843, now seen corresponding path program 1 times [2023-12-23 02:40:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:40:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424662203] [2023-12-23 02:40:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:40:04,058 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 02:40:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:40:04,061 INFO L229 MonitoredProcess]: Starting monitored process 12 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 02:40:04,094 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 (12)] Waiting until timeout for monitored process [2023-12-23 02:40:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:40:05,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-23 02:40:05,202 INFO L285 TraceCheckSpWp]: Computing forward predicates...