/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy WOLF -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/water_pid.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 00:25:32,288 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 00:25:32,368 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 00:25:32,377 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 00:25:32,378 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 00:25:32,403 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 00:25:32,404 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 00:25:32,404 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 00:25:32,405 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 00:25:32,405 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 00:25:32,406 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 00:25:32,406 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 00:25:32,407 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 00:25:32,407 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 00:25:32,407 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 00:25:32,408 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 00:25:32,409 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 00:25:32,409 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 00:25:32,410 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 00:25:32,410 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 00:25:32,410 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 00:25:32,411 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 00:25:32,411 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 00:25:32,412 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 00:25:32,412 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 00:25:32,412 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 00:25:32,413 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 00:25:32,413 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 00:25:32,416 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 00:25:32,417 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 00:25:32,417 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 00:25:32,417 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 00:25:32,418 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 00:25:32,418 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 00:25:32,418 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 00:25:32,419 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 00:25:32,419 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 00:25:32,419 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 00:25:32,420 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 00:25:32,420 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 00:25:32,423 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 00:25:32,424 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 00:25:32,424 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 00:25:32,424 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 00:25:32,425 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> WOLF
[2024-11-06 00:25:32,688 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 00:25:32,719 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 00:25:32,724 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 00:25:32,725 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 00:25:32,726 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 00:25:32,728 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/water_pid.c
[2024-11-06 00:25:34,393 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 00:25:34,579 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 00:25:34,580 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/water_pid.c
[2024-11-06 00:25:34,586 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39620c87e/174486e15d6c4f7f828ec2c9d6c83729/FLAGfb9e7c9c1
[2024-11-06 00:25:34,601 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39620c87e/174486e15d6c4f7f828ec2c9d6c83729
[2024-11-06 00:25:34,604 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 00:25:34,606 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 00:25:34,607 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 00:25:34,607 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 00:25:34,612 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 00:25:34,614 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,615 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151fd40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34, skipping insertion in model container
[2024-11-06 00:25:34,615 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,637 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 00:25:34,815 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/water_pid.c[452,465]
[2024-11-06 00:25:34,834 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 00:25:34,850 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 00:25:34,863 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/water_pid.c[452,465]
[2024-11-06 00:25:34,875 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 00:25:34,896 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 00:25:34,896 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34 WrapperNode
[2024-11-06 00:25:34,897 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 00:25:34,898 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 00:25:34,898 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 00:25:34,898 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 00:25:34,905 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,914 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,931 INFO  L138                Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56
[2024-11-06 00:25:34,932 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 00:25:34,932 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 00:25:34,933 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 00:25:34,933 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 00:25:34,942 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,942 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,946 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,959 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].
[2024-11-06 00:25:34,960 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,960 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,966 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,969 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,974 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,975 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,979 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 00:25:34,980 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 00:25:34,981 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 00:25:34,981 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 00:25:34,985 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (1/1) ...
[2024-11-06 00:25:34,991 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 00:25:35,008 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 00:25:35,023 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)
[2024-11-06 00:25:35,026 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
[2024-11-06 00:25:35,049 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 00:25:35,049 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 00:25:35,049 INFO  L130     BoogieDeclarations]: Found specification of procedure y
[2024-11-06 00:25:35,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure y
[2024-11-06 00:25:35,050 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 00:25:35,050 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 00:25:35,120 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 00:25:35,122 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 00:25:40,408 INFO  L?                        ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-06 00:25:40,409 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 00:25:40,423 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 00:25:40,423 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 00:25:40,423 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:25:40 BoogieIcfgContainer
[2024-11-06 00:25:40,424 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 00:25:40,426 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 00:25:40,426 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 00:25:40,429 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 00:25:40,429 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:25:34" (1/3) ...
[2024-11-06 00:25:40,430 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f17fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:25:40, skipping insertion in model container
[2024-11-06 00:25:40,430 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:25:34" (2/3) ...
[2024-11-06 00:25:40,430 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f17fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:25:40, skipping insertion in model container
[2024-11-06 00:25:40,430 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:25:40" (3/3) ...
[2024-11-06 00:25:40,431 INFO  L112   eAbstractionObserver]: Analyzing ICFG water_pid.c
[2024-11-06 00:25:40,448 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 00:25:40,449 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 00:25:40,502 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 00:25:40,508 INFO  L333      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, 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;@63917848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 00:25:40,508 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 00:25:40,514 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-06 00:25:40,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2024-11-06 00:25:40,523 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 00:25:40,524 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 00:25:40,525 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 00:25:40,531 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 00:25:40,533 INFO  L85        PathProgramCache]: Analyzing trace with hash -1533419321, now seen corresponding path program 1 times
[2024-11-06 00:25:40,550 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 00:25:40,550 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371246788]
[2024-11-06 00:25:40,551 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 00:25:40,551 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
[2024-11-06 00:25:40,556 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 00:25:40,560 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)
[2024-11-06 00:25:40,562 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
[2024-11-06 00:25:43,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 00:25:43,265 INFO  L255         TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-06 00:25:43,272 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 00:26:01,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-06 00:26:01,012 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 00:26:01,013 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 00:26:01,013 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371246788]
[2024-11-06 00:26:01,013 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371246788] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 00:26:01,013 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 00:26:01,014 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-06 00:26:01,015 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705876119]
[2024-11-06 00:26:01,016 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 00:26:01,038 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-06 00:26:01,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 00:26:01,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-06 00:26:01,068 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2024-11-06 00:26:01,071 INFO  L87              Difference]: Start difference. First operand  has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-06 00:26:11,296 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:15,300 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:19,310 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:23,320 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:27,332 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:31,341 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:35,368 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:42,301 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:46,311 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:50,316 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:54,331 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:26:58,343 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:27:02,350 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:27:06,365 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 00:27:06,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 00:27:06,977 INFO  L93              Difference]: Finished difference Result 45 states and 52 transitions.
[2024-11-06 00:27:06,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-06 00:27:06,980 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15
[2024-11-06 00:27:06,980 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 00:27:06,984 INFO  L225             Difference]: With dead ends: 45
[2024-11-06 00:27:06,985 INFO  L226             Difference]: Without dead ends: 22
[2024-11-06 00:27:06,987 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2024-11-06 00:27:06,990 INFO  L432           NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.3s IncrementalHoareTripleChecker+Time
[2024-11-06 00:27:06,990 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 14 Unknown, 0 Unchecked, 63.3s Time]
[2024-11-06 00:27:07,003 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-06 00:27:07,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-11-06 00:27:07,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-06 00:27:07,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2024-11-06 00:27:07,031 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15
[2024-11-06 00:27:07,033 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 00:27:07,033 INFO  L471      AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2024-11-06 00:27:07,034 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-06 00:27:07,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2024-11-06 00:27:07,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-11-06 00:27:07,036 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 00:27:07,036 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 00:27:07,136 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
[2024-11-06 00:27:07,238 WARN  L453      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
[2024-11-06 00:27:07,239 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 00:27:07,239 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 00:27:07,239 INFO  L85        PathProgramCache]: Analyzing trace with hash -888289639, now seen corresponding path program 1 times
[2024-11-06 00:27:07,240 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 00:27:07,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822824459]
[2024-11-06 00:27:07,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 00:27:07,240 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
[2024-11-06 00:27:07,240 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 00:27:07,246 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)
[2024-11-06 00:27:07,249 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
[2024-11-06 00:27:11,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 00:27:11,462 WARN  L253         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-11-06 00:27:11,467 INFO  L278         TraceCheckSpWp]: Computing forward predicates...