/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-100_file-87.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:51:22,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:51:22,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 10:51:22,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:51:22,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:51:22,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:51:22,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:51:22,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:51:22,398 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:51:22,398 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:51:22,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:51:22,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:51:22,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:51:22,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:51:22,400 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:51:22,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:51:22,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:51:22,404 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:51:22,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:51:22,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:51:22,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:51:22,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:51:22,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:51:22,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:51:22,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:51:22,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:51:22,409 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:51:22,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:51:22,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:51:22,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:51:22,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:51:22,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:51:22,410 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:51:22,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:51:22,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:51:22,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:51:22,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:51:22,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:51:22,615 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:51:22,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-87.i [2023-12-16 10:51:23,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:51:23,950 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:51:23,950 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-87.i [2023-12-16 10:51:23,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d369ee2/7a531b2121bb473bb29c5e46f4ec3647/FLAG841cd6c42 [2023-12-16 10:51:23,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d369ee2/7a531b2121bb473bb29c5e46f4ec3647 [2023-12-16 10:51:23,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:51:23,981 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:51:23,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:51:23,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:51:23,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:51:23,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:51:23" (1/1) ... [2023-12-16 10:51:23,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4401aa63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:23, skipping insertion in model container [2023-12-16 10:51:23,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:51:23" (1/1) ... [2023-12-16 10:51:24,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:51:24,154 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-100_file-87.i[916,929] [2023-12-16 10:51:24,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:51:24,250 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:51:24,264 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-100_file-87.i[916,929] [2023-12-16 10:51:24,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:51:24,345 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:51:24,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24 WrapperNode [2023-12-16 10:51:24,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:51:24,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:51:24,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:51:24,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:51:24,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,408 INFO L138 Inliner]: procedures = 27, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 364 [2023-12-16 10:51:24,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:51:24,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:51:24,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:51:24,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:51:24,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,460 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]. [2023-12-16 10:51:24,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:51:24,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:51:24,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:51:24,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:51:24,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (1/1) ... [2023-12-16 10:51:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:51:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:51:24,579 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) [2023-12-16 10:51:24,613 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 [2023-12-16 10:51:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:51:24,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:51:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:51:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:51:24,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:51:24,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:51:24,731 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:51:24,733 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:51:44,286 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:51:44,324 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:51:44,324 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:51:44,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:51:44 BoogieIcfgContainer [2023-12-16 10:51:44,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:51:44,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:51:44,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:51:44,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:51:44,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:51:23" (1/3) ... [2023-12-16 10:51:44,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f1a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:51:44, skipping insertion in model container [2023-12-16 10:51:44,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:51:24" (2/3) ... [2023-12-16 10:51:44,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f1a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:51:44, skipping insertion in model container [2023-12-16 10:51:44,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:51:44" (3/3) ... [2023-12-16 10:51:44,329 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-87.i [2023-12-16 10:51:44,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:51:44,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:51:44,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:51:44,396 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;@466037d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:51:44,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:51:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 83 states have internal predecessors, (112), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-16 10:51:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-16 10:51:44,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:51:44,419 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:51:44,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:51:44,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:51:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 923768617, now seen corresponding path program 1 times [2023-12-16 10:51:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:51:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269120373] [2023-12-16 10:51:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:44,435 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 [2023-12-16 10:51:44,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:51:44,437 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) [2023-12-16 10:51:44,458 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 [2023-12-16 10:51:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:45,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:51:45,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:51:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5150 proven. 0 refuted. 0 times theorem prover too weak. 6250 trivial. 0 not checked. [2023-12-16 10:51:45,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:51:45,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:51:45,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269120373] [2023-12-16 10:51:45,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269120373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:51:45,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:51:45,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:51:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937330534] [2023-12-16 10:51:45,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:51:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:51:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:51:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:51:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:51:45,369 INFO L87 Difference]: Start difference. First operand has 161 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 83 states have internal predecessors, (112), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 10:51:49,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:51:49,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:51:49,647 INFO L93 Difference]: Finished difference Result 319 states and 602 transitions. [2023-12-16 10:51:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:51:49,724 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 449 [2023-12-16 10:51:49,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:51:49,731 INFO L225 Difference]: With dead ends: 319 [2023-12-16 10:51:49,731 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 10:51:49,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:51:49,738 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 10:51:49,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 256 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 10:51:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 10:51:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-16 10:51:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 81 states have internal predecessors, (107), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-16 10:51:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 259 transitions. [2023-12-16 10:51:49,855 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 259 transitions. Word has length 449 [2023-12-16 10:51:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:51:49,856 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 259 transitions. [2023-12-16 10:51:49,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 10:51:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 259 transitions. [2023-12-16 10:51:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-16 10:51:49,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:51:49,864 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:51:49,891 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 [2023-12-16 10:51:50,085 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 [2023-12-16 10:51:50,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:51:50,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:51:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 423930093, now seen corresponding path program 1 times [2023-12-16 10:51:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:51:50,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043389717] [2023-12-16 10:51:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:51:50,088 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 [2023-12-16 10:51:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:51:50,089 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) [2023-12-16 10:51:50,097 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 [2023-12-16 10:51:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:51:51,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 10:51:51,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:51:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4845 proven. 66 refuted. 0 times theorem prover too weak. 6489 trivial. 0 not checked. [2023-12-16 10:51:54,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:51:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 159 proven. 66 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-16 10:51:56,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:51:56,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043389717] [2023-12-16 10:51:56,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043389717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:51:56,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:51:56,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 10:51:56,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016879677] [2023-12-16 10:51:56,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:51:56,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 10:51:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:51:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 10:51:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 10:51:56,161 INFO L87 Difference]: Start difference. First operand 159 states and 259 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2023-12-16 10:52:06,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:52:10,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:52:14,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:52:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:52:18,088 INFO L93 Difference]: Finished difference Result 410 states and 662 transitions. [2023-12-16 10:52:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 10:52:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 449 [2023-12-16 10:52:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:52:18,093 INFO L225 Difference]: With dead ends: 410 [2023-12-16 10:52:18,093 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 10:52:18,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 890 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 10:52:18,100 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 293 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 204 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2023-12-16 10:52:18,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 567 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 727 Invalid, 3 Unknown, 0 Unchecked, 21.4s Time] [2023-12-16 10:52:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 10:52:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2023-12-16 10:52:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 116 states have internal predecessors, (140), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 128 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-16 10:52:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 398 transitions. [2023-12-16 10:52:18,160 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 398 transitions. Word has length 449 [2023-12-16 10:52:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:52:18,161 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 398 transitions. [2023-12-16 10:52:18,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2023-12-16 10:52:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 398 transitions. [2023-12-16 10:52:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-16 10:52:18,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:52:18,164 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:52:18,191 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 [2023-12-16 10:52:18,387 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 [2023-12-16 10:52:18,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:52:18,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:52:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1266471216, now seen corresponding path program 1 times [2023-12-16 10:52:18,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:52:18,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333374674] [2023-12-16 10:52:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:52:18,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:52:18,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:52:18,392 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) [2023-12-16 10:52:18,393 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 [2023-12-16 10:52:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:52:19,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 10:52:19,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:52:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5269 proven. 78 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2023-12-16 10:52:23,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:52:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 147 proven. 78 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-16 10:52:25,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:52:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333374674] [2023-12-16 10:52:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333374674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:52:25,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:52:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 10:52:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402520633] [2023-12-16 10:52:25,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:52:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 10:52:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:52:25,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 10:52:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 10:52:25,142 INFO L87 Difference]: Start difference. First operand 247 states and 398 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-16 10:52:34,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:52:38,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-16 10:52:42,546 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:52:42,547 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:52:42,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:52:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 10:52:42,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 892 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 10:52:42,643 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 125 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 25 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:52:42,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 359 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 380 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2023-12-16 10:52:42,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 10:52:42,666 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 [2023-12-16 10:52:42,845 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 [2023-12-16 10:52:42,846 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (247states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). [2023-12-16 10:52:42,849 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 10:52:42,851 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 10:52:42,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 10:52:42 BoogieIcfgContainer [2023-12-16 10:52:42,852 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 10:52:42,853 INFO L158 Benchmark]: Toolchain (without parser) took 78872.41ms. Allocated memory was 194.0MB in the beginning and 265.3MB in the end (delta: 71.3MB). Free memory was 147.2MB in the beginning and 107.3MB in the end (delta: 39.8MB). Peak memory consumption was 112.2MB. Max. memory is 8.0GB. [2023-12-16 10:52:42,853 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory was 150.4MB in the beginning and 150.4MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 10:52:42,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.52ms. Allocated memory is still 194.0MB. Free memory was 147.2MB in the beginning and 126.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 10:52:42,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.05ms. Allocated memory is still 194.0MB. Free memory was 126.9MB in the beginning and 123.4MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 10:52:42,854 INFO L158 Benchmark]: Boogie Preprocessor took 123.99ms. Allocated memory is still 194.0MB. Free memory was 123.4MB in the beginning and 118.5MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 10:52:42,854 INFO L158 Benchmark]: RCFGBuilder took 19790.85ms. Allocated memory is still 194.0MB. Free memory was 118.2MB in the beginning and 138.7MB in the end (delta: -20.5MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. [2023-12-16 10:52:42,854 INFO L158 Benchmark]: TraceAbstraction took 58526.72ms. Allocated memory was 194.0MB in the beginning and 265.3MB in the end (delta: 71.3MB). Free memory was 138.2MB in the beginning and 107.3MB in the end (delta: 30.8MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. [2023-12-16 10:52:42,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory was 150.4MB in the beginning and 150.4MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 362.52ms. Allocated memory is still 194.0MB. Free memory was 147.2MB in the beginning and 126.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.05ms. Allocated memory is still 194.0MB. Free memory was 126.9MB in the beginning and 123.4MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 123.99ms. Allocated memory is still 194.0MB. Free memory was 123.4MB in the beginning and 118.5MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 19790.85ms. Allocated memory is still 194.0MB. Free memory was 118.2MB in the beginning and 138.7MB in the end (delta: -20.5MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. * TraceAbstraction took 58526.72ms. Allocated memory was 194.0MB in the beginning and 265.3MB in the end (delta: 71.3MB). Free memory was 138.2MB in the beginning and 107.3MB in the end (delta: 30.8MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (247states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (182 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 161 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.5s, OverallIterations: 3, TraceHistogramMax: 76, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 43.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 520 SdHoareTripleChecker+Valid, 42.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 418 mSDsluCounter, 1182 SdHoareTripleChecker+Invalid, 42.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 493 mSDsCounter, 229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1109 IncrementalHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 229 mSolverCounterUnsat, 689 mSDtfsCounter, 1109 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2250 GetRequests, 2230 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 1348 NumberOfCodeBlocks, 1348 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 2242 ConstructedInterpolants, 0 QuantifiedInterpolants, 3470 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2104 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 56712/57000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown