/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_fillercodestructure_filler-pe-co_file-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:06:47,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:06:47,645 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 12:06:47,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:06:47,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:06:47,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:06:47,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:06:47,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:06:47,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:06:47,670 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:06:47,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:06:47,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:06:47,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:06:47,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:06:47,672 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:06:47,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:06:47,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:06:47,673 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:06:47,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:06:47,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:06:47,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:06:47,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:06:47,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:06:47,675 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:06:47,675 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:06:47,676 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:06:47,676 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:06:47,676 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:06:47,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:06:47,677 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:06:47,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:06:47,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:06:47,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:06:47,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:06:47,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:06:47,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:06:47,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:06:47,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:06:47,679 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:06:47,679 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:06:47,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:06:47,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:06:47,680 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:06:47,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:06:47,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:06:47,680 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:06:47,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:06:47,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:06:47,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:06:47,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:06:47,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:06:47,901 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:06:47,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i [2023-12-16 12:06:49,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:06:49,257 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:06:49,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i [2023-12-16 12:06:49,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5c081d0/4c4d43bc168547b99529efed70dcd51b/FLAG269bb82ec [2023-12-16 12:06:49,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5c081d0/4c4d43bc168547b99529efed70dcd51b [2023-12-16 12:06:49,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:06:49,282 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:06:49,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:06:49,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:06:49,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:06:49,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de60fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49, skipping insertion in model container [2023-12-16 12:06:49,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:06:49,438 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_fillercodestructure_filler-pe-co_file-96.i[919,932] [2023-12-16 12:06:49,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:06:49,513 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:06:49,521 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_fillercodestructure_filler-pe-co_file-96.i[919,932] [2023-12-16 12:06:49,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:06:49,574 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:06:49,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49 WrapperNode [2023-12-16 12:06:49,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:06:49,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:06:49,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:06:49,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:06:49,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,627 INFO L138 Inliner]: procedures = 27, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 227 [2023-12-16 12:06:49,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:06:49,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:06:49,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:06:49,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:06:49,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,660 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 12:06:49,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:06:49,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:06:49,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:06:49,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:06:49,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (1/1) ... [2023-12-16 12:06:49,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:06:49,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:06:49,722 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 12:06:49,738 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 12:06:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:06:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:06:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:06:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:06:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:06:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:06:49,845 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:06:49,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:06:51,570 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:06:51,616 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:06:51,616 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:06:51,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:06:51 BoogieIcfgContainer [2023-12-16 12:06:51,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:06:51,619 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:06:51,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:06:51,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:06:51,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:06:49" (1/3) ... [2023-12-16 12:06:51,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1a32c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:06:51, skipping insertion in model container [2023-12-16 12:06:51,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:06:49" (2/3) ... [2023-12-16 12:06:51,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1a32c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:06:51, skipping insertion in model container [2023-12-16 12:06:51,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:06:51" (3/3) ... [2023-12-16 12:06:51,624 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i [2023-12-16 12:06:51,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:06:51,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:06:51,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:06:51,679 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;@37113697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:06:51,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:06:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 12:06:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-16 12:06:51,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:06:51,710 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:51,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:06:51,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:06:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash -749488843, now seen corresponding path program 1 times [2023-12-16 12:06:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:06:51,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984722991] [2023-12-16 12:06:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:06:51,729 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 12:06:51,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:06:51,732 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 12:06:51,736 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 12:06:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:06:52,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:06:52,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:06:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-16 12:06:52,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:06:52,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:06:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984722991] [2023-12-16 12:06:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984722991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:06:52,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:06:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:06:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456873070] [2023-12-16 12:06:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:06:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:06:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:06:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:06:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:06:52,920 INFO L87 Difference]: Start difference. First operand has 102 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 12:06:54,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:06:56,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:06:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:06:56,859 INFO L93 Difference]: Finished difference Result 295 states and 573 transitions. [2023-12-16 12:06:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:06:56,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 262 [2023-12-16 12:06:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:06:56,893 INFO L225 Difference]: With dead ends: 295 [2023-12-16 12:06:56,893 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 12:06:56,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:06:56,900 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 71 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 12:06:56,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 437 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 12:06:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 12:06:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2023-12-16 12:06:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 states have internal predecessors, (93), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-16 12:06:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 269 transitions. [2023-12-16 12:06:56,973 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 269 transitions. Word has length 262 [2023-12-16 12:06:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:06:56,974 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 269 transitions. [2023-12-16 12:06:56,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 12:06:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 269 transitions. [2023-12-16 12:06:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-16 12:06:56,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:06:56,983 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:56,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 12:06:57,197 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 12:06:57,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:06:57,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:06:57,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1957130551, now seen corresponding path program 1 times [2023-12-16 12:06:57,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:06:57,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836555836] [2023-12-16 12:06:57,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:06:57,199 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 12:06:57,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:06:57,201 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 12:06:57,204 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 12:06:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:06:57,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 12:06:57,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:06:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2067 proven. 261 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2023-12-16 12:06:59,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:06:59,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:06:59,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836555836] [2023-12-16 12:06:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836555836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:06:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1821034507] [2023-12-16 12:06:59,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:06:59,700 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:06:59,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:06:59,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:06:59,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 12:07:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:07:00,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:07:00,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:07:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1383 proven. 99 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2023-12-16 12:07:00,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:07:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1821034507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:07:01,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:07:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2023-12-16 12:07:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763551853] [2023-12-16 12:07:01,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:07:01,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 12:07:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:07:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 12:07:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-16 12:07:01,216 INFO L87 Difference]: Start difference. First operand 170 states and 269 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) [2023-12-16 12:07:04,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:07:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:07:05,961 INFO L93 Difference]: Finished difference Result 410 states and 611 transitions. [2023-12-16 12:07:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 12:07:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) Word has length 262 [2023-12-16 12:07:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:07:05,972 INFO L225 Difference]: With dead ends: 410 [2023-12-16 12:07:05,972 INFO L226 Difference]: Without dead ends: 314 [2023-12-16 12:07:05,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 12:07:05,975 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 212 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:07:05,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 614 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 12:07:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-16 12:07:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 295. [2023-12-16 12:07:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 150 states have internal predecessors, (170), 132 states have call successors, (132), 13 states have call predecessors, (132), 13 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-16 12:07:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 434 transitions. [2023-12-16 12:07:06,020 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 434 transitions. Word has length 262 [2023-12-16 12:07:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:07:06,021 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 434 transitions. [2023-12-16 12:07:06,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) [2023-12-16 12:07:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 434 transitions. [2023-12-16 12:07:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-16 12:07:06,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:07:06,025 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:06,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-16 12:07:06,240 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 12:07:06,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:07:06,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:07:06,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:07:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -474432893, now seen corresponding path program 1 times [2023-12-16 12:07:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:07:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060568084] [2023-12-16 12:07:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:07:06,435 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 12:07:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:07:06,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:07:06,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 12:07:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:07:06,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 12:07:06,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:07:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-16 12:07:07,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:07:07,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:07:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060568084] [2023-12-16 12:07:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060568084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:07:07,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:07:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:07:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372871829] [2023-12-16 12:07:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:07:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 12:07:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:07:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 12:07:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:07:07,203 INFO L87 Difference]: Start difference. First operand 295 states and 434 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 12:07:09,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:07:10,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:07:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:07:10,994 INFO L93 Difference]: Finished difference Result 709 states and 1042 transitions. [2023-12-16 12:07:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 12:07:10,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 263 [2023-12-16 12:07:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:07:11,000 INFO L225 Difference]: With dead ends: 709 [2023-12-16 12:07:11,000 INFO L226 Difference]: Without dead ends: 500 [2023-12-16 12:07:11,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:07:11,003 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 21 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-16 12:07:11,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 267 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-16 12:07:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-16 12:07:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2023-12-16 12:07:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 255 states have (on average 1.1333333333333333) internal successors, (289), 257 states have internal predecessors, (289), 220 states have call successors, (220), 22 states have call predecessors, (220), 22 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-16 12:07:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 729 transitions. [2023-12-16 12:07:11,068 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 729 transitions. Word has length 263 [2023-12-16 12:07:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:07:11,069 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 729 transitions. [2023-12-16 12:07:11,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-16 12:07:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 729 transitions. [2023-12-16 12:07:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-16 12:07:11,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:07:11,073 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:11,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:07:11,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:07:11,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:07:11,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:07:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1073927755, now seen corresponding path program 1 times [2023-12-16 12:07:11,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:07:11,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051350284] [2023-12-16 12:07:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:07:11,286 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 12:07:11,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:07:11,287 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) [2023-12-16 12:07:11,289 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 [2023-12-16 12:07:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:07:11,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:07:11,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:07:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1929 proven. 60 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2023-12-16 12:07:11,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:07:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 69 proven. 60 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-16 12:07:12,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:07:12,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051350284] [2023-12-16 12:07:12,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051350284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:07:12,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:07:12,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-16 12:07:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699156603] [2023-12-16 12:07:12,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:07:12,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 12:07:12,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:07:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 12:07:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:07:12,188 INFO L87 Difference]: Start difference. First operand 498 states and 729 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-16 12:07:14,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:07:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:07:15,192 INFO L93 Difference]: Finished difference Result 1832 states and 2616 transitions. [2023-12-16 12:07:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 12:07:15,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 263 [2023-12-16 12:07:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:07:15,244 INFO L225 Difference]: With dead ends: 1832 [2023-12-16 12:07:15,245 INFO L226 Difference]: Without dead ends: 1420 [2023-12-16 12:07:15,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 518 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-12-16 12:07:15,260 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 246 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 12:07:15,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 438 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 12:07:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-12-16 12:07:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 544. [2023-12-16 12:07:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 296 states have (on average 1.135135135135135) internal successors, (336), 298 states have internal predecessors, (336), 220 states have call successors, (220), 27 states have call predecessors, (220), 27 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-16 12:07:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 776 transitions. [2023-12-16 12:07:15,396 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 776 transitions. Word has length 263 [2023-12-16 12:07:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:07:15,400 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 776 transitions. [2023-12-16 12:07:15,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-16 12:07:15,400 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 776 transitions. [2023-12-16 12:07:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-16 12:07:15,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:07:15,403 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:15,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 12:07:15,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:07:15,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:07:15,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:07:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash 753923979, now seen corresponding path program 1 times [2023-12-16 12:07:15,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:07:15,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987707417] [2023-12-16 12:07:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:07:15,615 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 12:07:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:07:15,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:07:15,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 12:07:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:07:15,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 12:07:15,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:07:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2040 proven. 357 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2023-12-16 12:07:18,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:07:18,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:07:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987707417] [2023-12-16 12:07:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987707417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:07:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [242358497] [2023-12-16 12:07:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:07:18,780 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:07:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:07:18,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:07:18,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-16 12:07:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:07:19,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 12:07:19,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:07:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1339 proven. 393 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2023-12-16 12:07:24,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:07:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [242358497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:07:25,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:07:25,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2023-12-16 12:07:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818625978] [2023-12-16 12:07:25,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:07:25,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 12:07:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:07:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 12:07:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=947, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 12:07:25,846 INFO L87 Difference]: Start difference. First operand 544 states and 776 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (81), 9 states have call predecessors, (81), 14 states have return successors, (82), 9 states have call predecessors, (82), 9 states have call successors, (82) [2023-12-16 12:07:31,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:07:36,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:07:48,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:07:50,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:07:52,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:07:56,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-16 12:07:58,133 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:07:58,133 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:07:58,134 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 12:07:59,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-16 12:07:59,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 12:07:59,342 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 12:07:59,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 12:07:59,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 711 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=546, Invalid=1707, Unknown=3, NotChecked=0, Total=2256 [2023-12-16 12:07:59,356 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 109 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 93 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-12-16 12:07:59,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 338 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 994 Invalid, 3 Unknown, 0 Unchecked, 20.5s Time] [2023-12-16 12:07:59,359 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 12:07:59,359 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 12:07:59,364 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 12:07:59,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 12:07:59,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:07:59 BoogieIcfgContainer [2023-12-16 12:07:59,369 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 12:07:59,369 INFO L158 Benchmark]: Toolchain (without parser) took 70086.66ms. Allocated memory was 199.2MB in the beginning and 252.7MB in the end (delta: 53.5MB). Free memory was 161.7MB in the beginning and 175.7MB in the end (delta: -14.0MB). Peak memory consumption was 40.5MB. Max. memory is 8.0GB. [2023-12-16 12:07:59,369 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 199.2MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 12:07:59,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.02ms. Allocated memory is still 199.2MB. Free memory was 161.7MB in the beginning and 144.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 12:07:59,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.72ms. Allocated memory is still 199.2MB. Free memory was 144.9MB in the beginning and 141.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 12:07:59,370 INFO L158 Benchmark]: Boogie Preprocessor took 68.75ms. Allocated memory is still 199.2MB. Free memory was 141.8MB in the beginning and 138.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 12:07:59,370 INFO L158 Benchmark]: RCFGBuilder took 1919.46ms. Allocated memory is still 199.2MB. Free memory was 138.1MB in the beginning and 108.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-16 12:07:59,370 INFO L158 Benchmark]: TraceAbstraction took 67749.84ms. Allocated memory was 199.2MB in the beginning and 252.7MB in the end (delta: 53.5MB). Free memory was 107.7MB in the beginning and 175.7MB in the end (delta: -68.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 12:07:59,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 199.2MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 292.02ms. Allocated memory is still 199.2MB. Free memory was 161.7MB in the beginning and 144.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.72ms. Allocated memory is still 199.2MB. Free memory was 144.9MB in the beginning and 141.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.75ms. Allocated memory is still 199.2MB. Free memory was 141.8MB in the beginning and 138.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1919.46ms. Allocated memory is still 199.2MB. Free memory was 138.1MB in the beginning and 108.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 67749.84ms. Allocated memory was 199.2MB in the beginning and 252.7MB in the end (delta: 53.5MB). Free memory was 107.7MB in the beginning and 175.7MB in the end (delta: -68.0MB). There was no memory consumed. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.7s, OverallIterations: 5, TraceHistogramMax: 44, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 49.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 697 SdHoareTripleChecker+Valid, 34.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 659 mSDsluCounter, 2094 SdHoareTripleChecker+Invalid, 34.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1452 mSDsCounter, 579 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2409 IncrementalHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 579 mSolverCounterUnsat, 642 mSDtfsCounter, 2409 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2411 GetRequests, 2296 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=544occurred in iteration=4, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 921 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 1838 NumberOfCodeBlocks, 1838 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2093 ConstructedInterpolants, 2 QuantifiedInterpolants, 13975 SizeOfPredicates, 35 NumberOfNonLiveVariables, 2894 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 29042/30272 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