/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-40.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 09:38:15,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 09:38:15,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 09:38:15,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 09:38:15,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 09:38:15,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 09:38:15,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 09:38:15,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 09:38:15,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 09:38:15,585 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 09:38:15,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 09:38:15,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 09:38:15,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 09:38:15,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 09:38:15,587 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 09:38:15,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 09:38:15,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 09:38:15,588 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 09:38:15,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 09:38:15,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 09:38:15,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 09:38:15,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 09:38:15,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 09:38:15,590 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 09:38:15,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 09:38:15,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 09:38:15,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:38:15,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 09:38:15,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 09:38:15,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 09:38:15,593 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 09:38:15,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 09:38:15,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 09:38:15,593 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 09:38:15,594 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 09:38:15,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 09:38:15,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 09:38:15,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 09:38:15,804 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 09:38:15,804 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 09:38:15,806 INFO L431 ainManager$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-40.i [2023-12-23 09:38:16,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 09:38:16,939 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 09:38:16,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-40.i [2023-12-23 09:38:16,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef311bb22/fcb675730b2947149217f44ed8bf1704/FLAGa82dee6c6 [2023-12-23 09:38:16,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef311bb22/fcb675730b2947149217f44ed8bf1704 [2023-12-23 09:38:16,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 09:38:16,972 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 09:38:16,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 09:38:16,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 09:38:16,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 09:38:16,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:38:16" (1/1) ... [2023-12-23 09:38:16,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a225a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:16, skipping insertion in model container [2023-12-23 09:38:16,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:38:16" (1/1) ... [2023-12-23 09:38:17,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 09:38:17,110 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-40.i[919,932] [2023-12-23 09:38:17,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:38:17,165 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 09:38:17,173 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-40.i[919,932] [2023-12-23 09:38:17,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:38:17,220 INFO L206 MainTranslator]: Completed translation [2023-12-23 09:38:17,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17 WrapperNode [2023-12-23 09:38:17,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 09:38:17,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 09:38:17,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 09:38:17,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 09:38:17,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,263 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 175 [2023-12-23 09:38:17,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 09:38:17,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 09:38:17,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 09:38:17,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 09:38:17,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,300 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 09:38:17,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 09:38:17,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 09:38:17,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 09:38:17,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 09:38:17,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (1/1) ... [2023-12-23 09:38:17,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:38:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 09:38:17,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 09:38:17,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 09:38:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 09:38:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 09:38:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 09:38:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 09:38:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 09:38:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 09:38:17,453 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 09:38:17,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 09:38:26,994 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 09:38:27,032 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 09:38:27,032 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 09:38:27,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:38:27 BoogieIcfgContainer [2023-12-23 09:38:27,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 09:38:27,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 09:38:27,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 09:38:27,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 09:38:27,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:38:16" (1/3) ... [2023-12-23 09:38:27,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea52b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:38:27, skipping insertion in model container [2023-12-23 09:38:27,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:38:17" (2/3) ... [2023-12-23 09:38:27,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea52b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:38:27, skipping insertion in model container [2023-12-23 09:38:27,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:38:27" (3/3) ... [2023-12-23 09:38:27,038 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-40.i [2023-12-23 09:38:27,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 09:38:27,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 09:38:27,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 09:38:27,087 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;@37c2b425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 09:38:27,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 09:38:27,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 46 states have (on average 1.5) internal successors, (69), 47 states have internal predecessors, (69), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-23 09:38:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-23 09:38:27,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:27,123 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:27,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:27,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1750146756, now seen corresponding path program 1 times [2023-12-23 09:38:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:27,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197865437] [2023-12-23 09:38:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:27,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:27,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:27,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:27,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 09:38:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:28,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 09:38:28,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:38:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-23 09:38:28,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:38:28,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:38:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197865437] [2023-12-23 09:38:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197865437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:38:28,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:38:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 09:38:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867812147] [2023-12-23 09:38:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:38:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 09:38:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:38:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 09:38:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 09:38:28,068 INFO L87 Difference]: Start difference. First operand has 71 states, 46 states have (on average 1.5) internal successors, (69), 47 states have internal predecessors, (69), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:38:28,278 INFO L93 Difference]: Finished difference Result 139 states and 246 transitions. [2023-12-23 09:38:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 09:38:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-12-23 09:38:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:38:28,297 INFO L225 Difference]: With dead ends: 139 [2023-12-23 09:38:28,298 INFO L226 Difference]: Without dead ends: 69 [2023-12-23 09:38:28,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 09:38:28,302 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 09:38:28,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 09:38:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-23 09:38:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-23 09:38:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-23 09:38:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 107 transitions. [2023-12-23 09:38:28,331 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 107 transitions. Word has length 146 [2023-12-23 09:38:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:38:28,332 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 107 transitions. [2023-12-23 09:38:28,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 107 transitions. [2023-12-23 09:38:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-23 09:38:28,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:28,335 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:28,357 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 [2023-12-23 09:38:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:28,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:28,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1457295697, now seen corresponding path program 1 times [2023-12-23 09:38:28,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:28,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780557316] [2023-12-23 09:38:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:28,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:28,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:28,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 09:38:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:29,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 09:38:29,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:38:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-23 09:38:29,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:38:29,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:38:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780557316] [2023-12-23 09:38:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780557316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:38:29,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:38:29,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 09:38:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502755245] [2023-12-23 09:38:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:38:29,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 09:38:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:38:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 09:38:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 09:38:29,498 INFO L87 Difference]: Start difference. First operand 69 states and 107 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:38:29,688 INFO L93 Difference]: Finished difference Result 137 states and 213 transitions. [2023-12-23 09:38:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 09:38:29,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2023-12-23 09:38:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:38:29,702 INFO L225 Difference]: With dead ends: 137 [2023-12-23 09:38:29,702 INFO L226 Difference]: Without dead ends: 69 [2023-12-23 09:38:29,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 09:38:29,704 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 09:38:29,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 176 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 09:38:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-23 09:38:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-23 09:38:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-23 09:38:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 106 transitions. [2023-12-23 09:38:29,711 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 106 transitions. Word has length 147 [2023-12-23 09:38:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:38:29,711 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 106 transitions. [2023-12-23 09:38:29,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 106 transitions. [2023-12-23 09:38:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-23 09:38:29,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:29,713 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:29,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 09:38:29,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:29,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash 436227343, now seen corresponding path program 1 times [2023-12-23 09:38:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222535985] [2023-12-23 09:38:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:29,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:29,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:29,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 09:38:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:30,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 09:38:30,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:38:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-23 09:38:31,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:38:31,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:38:31,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222535985] [2023-12-23 09:38:31,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222535985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:38:31,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:38:31,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-23 09:38:31,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890352091] [2023-12-23 09:38:31,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:38:31,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 09:38:31,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:38:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 09:38:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 09:38:31,114 INFO L87 Difference]: Start difference. First operand 69 states and 106 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:38:33,579 INFO L93 Difference]: Finished difference Result 288 states and 435 transitions. [2023-12-23 09:38:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 09:38:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2023-12-23 09:38:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:38:33,582 INFO L225 Difference]: With dead ends: 288 [2023-12-23 09:38:33,582 INFO L226 Difference]: Without dead ends: 220 [2023-12-23 09:38:33,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-23 09:38:33,584 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 295 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-23 09:38:33,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 368 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-23 09:38:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-23 09:38:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 136. [2023-12-23 09:38:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 89 states have internal predecessors, (118), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-23 09:38:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 206 transitions. [2023-12-23 09:38:33,608 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 206 transitions. Word has length 147 [2023-12-23 09:38:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:38:33,608 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 206 transitions. [2023-12-23 09:38:33,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 206 transitions. [2023-12-23 09:38:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-23 09:38:33,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:33,610 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:33,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-23 09:38:33,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:33,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:33,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash -959925297, now seen corresponding path program 1 times [2023-12-23 09:38:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:33,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206008166] [2023-12-23 09:38:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:33,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:33,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:33,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:33,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 09:38:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:34,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 09:38:34,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:38:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 441 proven. 21 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-23 09:38:36,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:38:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-23 09:38:36,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:38:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206008166] [2023-12-23 09:38:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206008166] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 09:38:36,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 09:38:36,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-23 09:38:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875165169] [2023-12-23 09:38:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:38:36,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 09:38:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:38:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 09:38:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-23 09:38:36,834 INFO L87 Difference]: Start difference. First operand 136 states and 206 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:38:38,329 INFO L93 Difference]: Finished difference Result 418 states and 626 transitions. [2023-12-23 09:38:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 09:38:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2023-12-23 09:38:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:38:38,337 INFO L225 Difference]: With dead ends: 418 [2023-12-23 09:38:38,337 INFO L226 Difference]: Without dead ends: 283 [2023-12-23 09:38:38,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-23 09:38:38,339 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 111 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 09:38:38,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 300 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 09:38:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-23 09:38:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 253. [2023-12-23 09:38:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.329268292682927) internal successors, (218), 168 states have internal predecessors, (218), 81 states have call successors, (81), 7 states have call predecessors, (81), 7 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-23 09:38:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 380 transitions. [2023-12-23 09:38:38,387 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 380 transitions. Word has length 147 [2023-12-23 09:38:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:38:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 380 transitions. [2023-12-23 09:38:38,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 380 transitions. [2023-12-23 09:38:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-23 09:38:38,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:38,393 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:38,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 09:38:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:38,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:38,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash -902666995, now seen corresponding path program 1 times [2023-12-23 09:38:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912564900] [2023-12-23 09:38:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:38,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:38,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:38,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:38,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 09:38:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:39,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 09:38:39,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:38:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 453 proven. 39 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-23 09:38:40,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:38:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-23 09:38:41,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:38:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912564900] [2023-12-23 09:38:41,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912564900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 09:38:41,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 09:38:41,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 09:38:41,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66368918] [2023-12-23 09:38:41,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 09:38:41,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 09:38:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:38:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 09:38:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 09:38:41,857 INFO L87 Difference]: Start difference. First operand 253 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-23 09:38:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:38:44,888 INFO L93 Difference]: Finished difference Result 473 states and 680 transitions. [2023-12-23 09:38:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 09:38:44,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 147 [2023-12-23 09:38:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:38:44,890 INFO L225 Difference]: With dead ends: 473 [2023-12-23 09:38:44,890 INFO L226 Difference]: Without dead ends: 221 [2023-12-23 09:38:44,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 09:38:44,893 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 198 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-23 09:38:44,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 275 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-23 09:38:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-23 09:38:44,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 199. [2023-12-23 09:38:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 123 states have internal predecessors, (142), 66 states have call successors, (66), 10 states have call predecessors, (66), 10 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 09:38:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 274 transitions. [2023-12-23 09:38:44,911 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 274 transitions. Word has length 147 [2023-12-23 09:38:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:38:44,911 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 274 transitions. [2023-12-23 09:38:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-23 09:38:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 274 transitions. [2023-12-23 09:38:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-23 09:38:44,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:44,912 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:44,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 09:38:45,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:45,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:45,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -900819953, now seen corresponding path program 1 times [2023-12-23 09:38:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582555216] [2023-12-23 09:38:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:45,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:45,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:45,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:45,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 09:38:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:45,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 09:38:45,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:38:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-23 09:38:46,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:38:46,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:38:46,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582555216] [2023-12-23 09:38:46,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582555216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:38:46,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:38:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 09:38:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034508937] [2023-12-23 09:38:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:38:46,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 09:38:46,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:38:46,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 09:38:46,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 09:38:46,553 INFO L87 Difference]: Start difference. First operand 199 states and 274 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:38:47,607 INFO L93 Difference]: Finished difference Result 361 states and 492 transitions. [2023-12-23 09:38:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 09:38:47,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2023-12-23 09:38:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:38:47,609 INFO L225 Difference]: With dead ends: 361 [2023-12-23 09:38:47,609 INFO L226 Difference]: Without dead ends: 205 [2023-12-23 09:38:47,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 09:38:47,610 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 83 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 09:38:47,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 269 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 09:38:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-23 09:38:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2023-12-23 09:38:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 123 states have internal predecessors, (140), 66 states have call successors, (66), 10 states have call predecessors, (66), 10 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 09:38:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 272 transitions. [2023-12-23 09:38:47,630 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 272 transitions. Word has length 147 [2023-12-23 09:38:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:38:47,631 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 272 transitions. [2023-12-23 09:38:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 09:38:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 272 transitions. [2023-12-23 09:38:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-23 09:38:47,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:38:47,632 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:38:47,653 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 [2023-12-23 09:38:47,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:47,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:38:47,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:38:47,846 INFO L85 PathProgramCache]: Analyzing trace with hash -900760371, now seen corresponding path program 1 times [2023-12-23 09:38:47,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:38:47,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100561959] [2023-12-23 09:38:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:38:47,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:38:47,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:38:47,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:38:47,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 09:38:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:38:48,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-23 09:38:48,695 INFO L285 TraceCheckSpWp]: Computing forward predicates...