/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-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:43:33,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:43:33,593 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 10:43:33,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:43:33,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:43:33,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:43:33,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:43:33,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:43:33,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:43:33,623 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:43:33,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:43:33,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:43:33,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:43:33,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:43:33,625 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:43:33,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:43:33,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:43:33,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:43:33,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:43:33,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:43:33,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:43:33,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:43:33,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:43:33,627 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:43:33,627 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:43:33,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:43:33,627 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:43:33,628 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:43:33,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:43:33,628 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:43:33,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:43:33,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:43:33,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:43:33,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:43:33,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:43:33,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:43:33,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:43:33,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:43:33,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:43:33,631 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:43:33,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:43:33,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:43:33,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:43:33,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:43:33,856 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:43:33,856 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:43:33,858 INFO L431 ainManager$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-11.i [2023-12-16 10:43:35,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:43:35,181 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:43:35,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-12-16 10:43:35,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f36871e/210caf95145f4d4cac7375895c2a6084/FLAG139d5fceb [2023-12-16 10:43:35,218 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f36871e/210caf95145f4d4cac7375895c2a6084 [2023-12-16 10:43:35,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:43:35,222 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:43:35,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:43:35,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:43:35,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:43:35,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61487140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35, skipping insertion in model container [2023-12-16 10:43:35,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,273 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:43:35,399 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-11.i[916,929] [2023-12-16 10:43:35,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:43:35,518 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:43:35,533 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-11.i[916,929] [2023-12-16 10:43:35,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:43:35,574 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:43:35,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35 WrapperNode [2023-12-16 10:43:35,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:43:35,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:43:35,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:43:35,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:43:35,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,631 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2023-12-16 10:43:35,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:43:35,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:43:35,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:43:35,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:43:35,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,675 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 10:43:35,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:43:35,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:43:35,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:43:35,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:43:35,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (1/1) ... [2023-12-16 10:43:35,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:43:35,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:43:35,750 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 10:43:35,772 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 10:43:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:43:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:43:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:43:35,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:43:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:43:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:43:35,878 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:43:35,879 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:43:36,654 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:43:36,726 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:43:36,727 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:43:36,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:43:36 BoogieIcfgContainer [2023-12-16 10:43:36,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:43:36,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:43:36,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:43:36,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:43:36,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:43:35" (1/3) ... [2023-12-16 10:43:36,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ac3daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:43:36, skipping insertion in model container [2023-12-16 10:43:36,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:43:35" (2/3) ... [2023-12-16 10:43:36,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ac3daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:43:36, skipping insertion in model container [2023-12-16 10:43:36,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:43:36" (3/3) ... [2023-12-16 10:43:36,734 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-11.i [2023-12-16 10:43:36,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:43:36,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:43:36,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:43:36,785 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;@32fb2284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:43:36,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:43:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-16 10:43:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-16 10:43:36,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:36,801 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:36,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash -34283185, now seen corresponding path program 1 times [2023-12-16 10:43:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:36,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357523581] [2023-12-16 10:43:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:36,816 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 10:43:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:36,818 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 10:43:36,819 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 10:43:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:37,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:43:37,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2023-12-16 10:43:37,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:37,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:37,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357523581] [2023-12-16 10:43:37,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357523581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:43:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157741564] [2023-12-16 10:43:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:37,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:43:37,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:43:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:43:37,247 INFO L87 Difference]: Start difference. First operand has 108 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-16 10:43:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:37,318 INFO L93 Difference]: Finished difference Result 213 states and 397 transitions. [2023-12-16 10:43:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:43:37,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 242 [2023-12-16 10:43:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:37,328 INFO L225 Difference]: With dead ends: 213 [2023-12-16 10:43:37,328 INFO L226 Difference]: Without dead ends: 106 [2023-12-16 10:43:37,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 241 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 10:43:37,336 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:37,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 10:43:37,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-16 10:43:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-16 10:43:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 65 states have internal predecessors, (95), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-16 10:43:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 173 transitions. [2023-12-16 10:43:37,379 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 173 transitions. Word has length 242 [2023-12-16 10:43:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:37,380 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 173 transitions. [2023-12-16 10:43:37,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-16 10:43:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 173 transitions. [2023-12-16 10:43:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-16 10:43:37,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:37,389 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:37,415 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 10:43:37,599 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 10:43:37,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:37,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -981239791, now seen corresponding path program 1 times [2023-12-16 10:43:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770029549] [2023-12-16 10:43:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:37,603 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 10:43:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:37,605 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 10:43:37,607 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 10:43:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:37,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 10:43:37,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-16 10:43:37,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:37,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770029549] [2023-12-16 10:43:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770029549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:37,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:37,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:43:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60418690] [2023-12-16 10:43:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 10:43:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:37,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 10:43:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:43:37,940 INFO L87 Difference]: Start difference. First operand 106 states and 173 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 10:43:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:38,001 INFO L93 Difference]: Finished difference Result 282 states and 461 transitions. [2023-12-16 10:43:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 10:43:38,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 242 [2023-12-16 10:43:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:38,004 INFO L225 Difference]: With dead ends: 282 [2023-12-16 10:43:38,004 INFO L226 Difference]: Without dead ends: 177 [2023-12-16 10:43:38,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 240 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 10:43:38,006 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 110 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:38,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 415 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 10:43:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-16 10:43:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2023-12-16 10:43:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 111 states have internal predecessors, (162), 61 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-16 10:43:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 284 transitions. [2023-12-16 10:43:38,022 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 284 transitions. Word has length 242 [2023-12-16 10:43:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:38,022 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 284 transitions. [2023-12-16 10:43:38,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 10:43:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 284 transitions. [2023-12-16 10:43:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-16 10:43:38,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:38,025 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:38,034 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 10:43:38,233 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 10:43:38,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:38,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -558537965, now seen corresponding path program 1 times [2023-12-16 10:43:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:38,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102718064] [2023-12-16 10:43:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:38,235 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 10:43:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:38,237 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 10:43:38,238 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 10:43:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:38,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 10:43:38,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-16 10:43:39,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:39,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:39,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102718064] [2023-12-16 10:43:39,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102718064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:39,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 10:43:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942020194] [2023-12-16 10:43:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:39,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 10:43:39,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 10:43:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:43:39,443 INFO L87 Difference]: Start difference. First operand 174 states and 284 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 10:43:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:39,760 INFO L93 Difference]: Finished difference Result 485 states and 794 transitions. [2023-12-16 10:43:39,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 10:43:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 242 [2023-12-16 10:43:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:39,765 INFO L225 Difference]: With dead ends: 485 [2023-12-16 10:43:39,765 INFO L226 Difference]: Without dead ends: 312 [2023-12-16 10:43:39,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 10:43:39,767 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 149 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:39,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 587 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 10:43:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-16 10:43:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 280. [2023-12-16 10:43:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 176 states have (on average 1.4772727272727273) internal successors, (260), 177 states have internal predecessors, (260), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 10:43:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 460 transitions. [2023-12-16 10:43:39,793 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 460 transitions. Word has length 242 [2023-12-16 10:43:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:39,793 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 460 transitions. [2023-12-16 10:43:39,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 10:43:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 460 transitions. [2023-12-16 10:43:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-16 10:43:39,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:39,795 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:39,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 10:43:40,007 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 10:43:40,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:40,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash 186491772, now seen corresponding path program 1 times [2023-12-16 10:43:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005283942] [2023-12-16 10:43:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:40,009 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 10:43:40,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:40,013 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 10:43:40,014 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 10:43:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:40,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 10:43:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 464 proven. 105 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2023-12-16 10:43:40,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:43:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 9 proven. 105 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-16 10:43:40,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005283942] [2023-12-16 10:43:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005283942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:43:40,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:43:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-16 10:43:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530762218] [2023-12-16 10:43:40,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:43:40,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 10:43:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 10:43:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 10:43:40,823 INFO L87 Difference]: Start difference. First operand 280 states and 460 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-16 10:43:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:41,305 INFO L93 Difference]: Finished difference Result 477 states and 764 transitions. [2023-12-16 10:43:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 10:43:41,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 243 [2023-12-16 10:43:41,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:41,313 INFO L225 Difference]: With dead ends: 477 [2023-12-16 10:43:41,313 INFO L226 Difference]: Without dead ends: 304 [2023-12-16 10:43:41,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 477 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-16 10:43:41,317 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 257 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:41,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 290 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 10:43:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-16 10:43:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 292. [2023-12-16 10:43:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 185 states have (on average 1.4324324324324325) internal successors, (265), 186 states have internal predecessors, (265), 100 states have call successors, (100), 6 states have call predecessors, (100), 6 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 10:43:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 465 transitions. [2023-12-16 10:43:41,351 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 465 transitions. Word has length 243 [2023-12-16 10:43:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:41,352 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 465 transitions. [2023-12-16 10:43:41,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-16 10:43:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 465 transitions. [2023-12-16 10:43:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 10:43:41,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:41,354 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:41,380 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 10:43:41,564 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 10:43:41,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:41,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 675536760, now seen corresponding path program 1 times [2023-12-16 10:43:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:41,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537155478] [2023-12-16 10:43:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:41,566 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 10:43:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:41,582 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 10:43:41,606 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 10:43:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:41,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 10:43:41,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:43:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-16 10:43:42,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:43:42,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:43:42,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537155478] [2023-12-16 10:43:42,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537155478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:43:42,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:43:42,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:43:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842649934] [2023-12-16 10:43:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:43:42,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 10:43:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:43:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 10:43:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 10:43:42,245 INFO L87 Difference]: Start difference. First operand 292 states and 465 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 10:43:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:43:43,076 INFO L93 Difference]: Finished difference Result 481 states and 762 transitions. [2023-12-16 10:43:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 10:43:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 244 [2023-12-16 10:43:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:43:43,079 INFO L225 Difference]: With dead ends: 481 [2023-12-16 10:43:43,079 INFO L226 Difference]: Without dead ends: 300 [2023-12-16 10:43:43,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:43:43,080 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 136 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 10:43:43,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 426 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 10:43:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-16 10:43:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2023-12-16 10:43:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 185 states have (on average 1.4108108108108108) internal successors, (261), 186 states have internal predecessors, (261), 100 states have call successors, (100), 6 states have call predecessors, (100), 6 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 10:43:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 461 transitions. [2023-12-16 10:43:43,136 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 461 transitions. Word has length 244 [2023-12-16 10:43:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:43:43,138 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 461 transitions. [2023-12-16 10:43:43,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-16 10:43:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 461 transitions. [2023-12-16 10:43:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-16 10:43:43,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:43:43,141 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:43,160 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 10:43:43,354 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 10:43:43,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:43:43,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:43:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash 620461943, now seen corresponding path program 1 times [2023-12-16 10:43:43,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:43:43,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943848801] [2023-12-16 10:43:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:43:43,355 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 10:43:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:43:43,357 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 10:43:43,358 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 10:43:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:43:43,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 10:43:43,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:44:29,669 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 10:44:29,704 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 10:44:30,696 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 0 [2023-12-16 10:44:30,725 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown