/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_codestructure_dependencies_file-22.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-22 19:42:33,736 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-22 19:42:33,808 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-22 19:42:33,813 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-22 19:42:33,814 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-22 19:42:33,836 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-22 19:42:33,836 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-22 19:42:33,837 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-22 19:42:33,837 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-22 19:42:33,840 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-22 19:42:33,840 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-22 19:42:33,841 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-22 19:42:33,841 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-22 19:42:33,842 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-22 19:42:33,842 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-22 19:42:33,843 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-22 19:42:33,843 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-22 19:42:33,843 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-22 19:42:33,843 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-22 19:42:33,844 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-22 19:42:33,844 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-22 19:42:33,844 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-22 19:42:33,844 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-22 19:42:33,844 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-22 19:42:33,845 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-22 19:42:33,845 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-22 19:42:33,845 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-22 19:42:33,845 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-22 19:42:33,845 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-22 19:42:33,845 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-22 19:42:33,846 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-22 19:42:33,846 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-22 19:42:33,846 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 19:42:33,847 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-22 19:42:33,847 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-22 19:42:33,848 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-22 19:42:33,848 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-22 19:42:33,848 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-22 19:42:33,848 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-22 19:42:33,848 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-22 19:42:33,848 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-22 19:42:33,987 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-22 19:42:34,000 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-22 19:42:34,002 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-22 19:42:34,003 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-22 19:42:34,003 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-22 19:42:34,004 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-22.i
[2023-12-22 19:42:35,133 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-22 19:42:35,281 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-22 19:42:35,282 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-22.i
[2023-12-22 19:42:35,291 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4aba6f91/e37bc896a41245cd9f0b04b78090a013/FLAG0374abf57
[2023-12-22 19:42:35,301 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4aba6f91/e37bc896a41245cd9f0b04b78090a013
[2023-12-22 19:42:35,303 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-22 19:42:35,304 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-22 19:42:35,306 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-22 19:42:35,306 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-22 19:42:35,309 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-22 19:42:35,310 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,311 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60be183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35, skipping insertion in model container
[2023-12-22 19:42:35,311 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,341 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-22 19:42:35,456 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_codestructure_dependencies_file-22.i[919,932]
[2023-12-22 19:42:35,494 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 19:42:35,505 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-22 19:42:35,513 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_codestructure_dependencies_file-22.i[919,932]
[2023-12-22 19:42:35,532 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 19:42:35,545 INFO  L206         MainTranslator]: Completed translation
[2023-12-22 19:42:35,545 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35 WrapperNode
[2023-12-22 19:42:35,545 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-22 19:42:35,546 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-22 19:42:35,546 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-22 19:42:35,546 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-22 19:42:35,551 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,558 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,583 INFO  L138                Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 142
[2023-12-22 19:42:35,583 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-22 19:42:35,584 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-22 19:42:35,584 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-22 19:42:35,584 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-22 19:42:35,597 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,597 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,601 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,612 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].
[2023-12-22 19:42:35,612 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,613 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,627 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,629 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,631 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,632 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,634 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-22 19:42:35,635 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-22 19:42:35,635 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-22 19:42:35,635 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-22 19:42:35,635 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (1/1) ...
[2023-12-22 19:42:35,648 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 19:42:35,659 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-22 19:42:35,675 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)
[2023-12-22 19:42:35,692 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
[2023-12-22 19:42:35,712 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-22 19:42:35,712 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-22 19:42:35,712 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-22 19:42:35,713 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-22 19:42:35,714 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-22 19:42:35,714 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-22 19:42:35,784 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-22 19:42:35,785 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-22 19:42:48,831 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-22 19:42:48,895 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-22 19:42:48,895 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-22 19:42:48,895 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:48 BoogieIcfgContainer
[2023-12-22 19:42:48,895 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-22 19:42:48,897 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-22 19:42:48,897 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-22 19:42:48,899 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-22 19:42:48,899 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:42:35" (1/3) ...
[2023-12-22 19:42:48,899 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcdae8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:48, skipping insertion in model container
[2023-12-22 19:42:48,900 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:35" (2/3) ...
[2023-12-22 19:42:48,900 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcdae8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:48, skipping insertion in model container
[2023-12-22 19:42:48,900 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:48" (3/3) ...
[2023-12-22 19:42:48,901 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-22.i
[2023-12-22 19:42:48,913 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-22 19:42:48,913 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-22 19:42:48,947 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-22 19:42:48,952 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;@7579a2b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-22 19:42:48,952 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-22 19:42:48,955 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 57 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 32 states have internal predecessors, (44), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-22 19:42:48,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2023-12-22 19:42:48,964 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:42:48,965 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:42:48,965 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:42:48,969 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:42:48,969 INFO  L85        PathProgramCache]: Analyzing trace with hash 773246236, now seen corresponding path program 1 times
[2023-12-22 19:42:48,978 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:42:48,978 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396739878]
[2023-12-22 19:42:48,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:42:48,979 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
[2023-12-22 19:42:48,979 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:42:49,012 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)
[2023-12-22 19:42:49,073 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
[2023-12-22 19:42:49,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:42:49,895 INFO  L262         TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-22 19:42:49,901 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:42:49,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked.
[2023-12-22 19:42:49,978 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 19:42:49,978 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 19:42:49,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396739878]
[2023-12-22 19:42:49,979 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396739878] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 19:42:49,979 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 19:42:49,979 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-22 19:42:49,980 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558155778]
[2023-12-22 19:42:49,981 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 19:42:49,986 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-22 19:42:49,986 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 19:42:50,020 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-22 19:42:50,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 19:42:50,022 INFO  L87              Difference]: Start difference. First operand  has 57 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 32 states have internal predecessors, (44), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand  has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)
[2023-12-22 19:42:54,692 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:42:54,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 19:42:54,693 INFO  L93              Difference]: Finished difference Result 111 states and 201 transitions.
[2023-12-22 19:42:54,926 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-22 19:42:54,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141
[2023-12-22 19:42:54,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 19:42:54,932 INFO  L225             Difference]: With dead ends: 111
[2023-12-22 19:42:54,932 INFO  L226             Difference]: Without dead ends: 55
[2023-12-22 19:42:54,935 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 19:42:54,938 INFO  L413           NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2023-12-22 19:42:54,938 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time]
[2023-12-22 19:42:54,948 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2023-12-22 19:42:54,963 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2023-12-22 19:42:54,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-22 19:42:54,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 83 transitions.
[2023-12-22 19:42:54,966 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 83 transitions. Word has length 141
[2023-12-22 19:42:54,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 19:42:54,967 INFO  L495      AbstractCegarLoop]: Abstraction has 55 states and 83 transitions.
[2023-12-22 19:42:54,967 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)
[2023-12-22 19:42:54,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions.
[2023-12-22 19:42:54,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2023-12-22 19:42:54,970 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:42:54,970 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:42:54,988 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-22 19:42:55,184 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
[2023-12-22 19:42:55,185 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:42:55,185 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:42:55,186 INFO  L85        PathProgramCache]: Analyzing trace with hash -1840200872, now seen corresponding path program 1 times
[2023-12-22 19:42:55,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:42:55,186 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705824519]
[2023-12-22 19:42:55,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:42:55,186 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
[2023-12-22 19:42:55,187 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:42:55,188 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)
[2023-12-22 19:42:55,210 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
[2023-12-22 19:42:55,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:42:55,948 INFO  L262         TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-22 19:42:55,953 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:42:57,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked.
[2023-12-22 19:42:57,744 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 19:42:57,745 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 19:42:57,745 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705824519]
[2023-12-22 19:42:57,745 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [705824519] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 19:42:57,745 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 19:42:57,745 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-22 19:42:57,745 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125693438]
[2023-12-22 19:42:57,745 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 19:42:57,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-22 19:42:57,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 19:42:57,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-22 19:42:57,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-22 19:42:57,747 INFO  L87              Difference]: Start difference. First operand 55 states and 83 transitions. Second operand  has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)
[2023-12-22 19:43:02,595 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:02,599 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 19:43:02,599 INFO  L93              Difference]: Finished difference Result 109 states and 165 transitions.
[2023-12-22 19:43:02,831 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-22 19:43:02,832 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 141
[2023-12-22 19:43:02,833 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 19:43:02,833 INFO  L225             Difference]: With dead ends: 109
[2023-12-22 19:43:02,833 INFO  L226             Difference]: Without dead ends: 55
[2023-12-22 19:43:02,834 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-22 19:43:02,835 INFO  L413           NwaCegarLoop]: 77 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2023-12-22 19:43:02,835 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 77 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time]
[2023-12-22 19:43:02,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2023-12-22 19:43:02,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2023-12-22 19:43:02,845 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-22 19:43:02,846 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions.
[2023-12-22 19:43:02,846 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 141
[2023-12-22 19:43:02,847 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 19:43:02,847 INFO  L495      AbstractCegarLoop]: Abstraction has 55 states and 82 transitions.
[2023-12-22 19:43:02,848 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)
[2023-12-22 19:43:02,848 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions.
[2023-12-22 19:43:02,850 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2023-12-22 19:43:02,850 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:43:02,850 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:43:02,877 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
[2023-12-22 19:43:03,066 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
[2023-12-22 19:43:03,067 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:43:03,067 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:43:03,067 INFO  L85        PathProgramCache]: Analyzing trace with hash -1139136294, now seen corresponding path program 1 times
[2023-12-22 19:43:03,067 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:43:03,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788554168]
[2023-12-22 19:43:03,068 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:43:03,068 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
[2023-12-22 19:43:03,068 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:43:03,069 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)
[2023-12-22 19:43:03,084 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
[2023-12-22 19:43:03,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:43:03,816 INFO  L262         TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-22 19:43:03,820 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:43:07,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 620 proven. 114 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-12-22 19:43:07,781 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-22 19:43:08,109 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 19:43:08,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788554168]
[2023-12-22 19:43:08,112 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [788554168] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-22 19:43:08,114 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2059006540]
[2023-12-22 19:43:08,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:43:08,114 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-22 19:43:08,114 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-22 19:43:08,141 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-22 19:43:08,144 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2023-12-22 19:43:09,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:43:09,603 INFO  L262         TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-22 19:43:09,606 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 19:43:12,848 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 620 proven. 114 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-12-22 19:43:12,848 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-22 19:43:13,001 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2059006540] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-22 19:43:13,001 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-22 19:43:13,001 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11
[2023-12-22 19:43:13,002 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935160643]
[2023-12-22 19:43:13,002 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-22 19:43:13,002 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-22 19:43:13,002 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 19:43:13,003 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-22 19:43:13,003 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2023-12-22 19:43:13,003 INFO  L87              Difference]: Start difference. First operand 55 states and 82 transitions. Second operand  has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23)
[2023-12-22 19:43:19,915 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:23,922 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:27,925 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:31,934 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:35,939 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:39,952 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:43,957 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:48,813 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:43:52,840 WARN  L539   Checker$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 []
[2023-12-22 19:43:56,862 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:44:00,874 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:44:04,877 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:44:08,883 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 19:44:12,888 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 []
[2023-12-22 19:44:12,890 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 19:44:12,890 INFO  L93              Difference]: Finished difference Result 125 states and 176 transitions.
[2023-12-22 19:44:13,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-22 19:44:13,127 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 141
[2023-12-22 19:44:13,127 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 19:44:13,128 INFO  L225             Difference]: With dead ends: 125
[2023-12-22 19:44:13,128 INFO  L226             Difference]: Without dead ends: 71
[2023-12-22 19:44:13,129 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306
[2023-12-22 19:44:13,129 INFO  L413           NwaCegarLoop]: 48 mSDtfsCounter, 35 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 11 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time
[2023-12-22 19:44:13,130 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 277 Invalid, 14 Unknown, 0 Unchecked, 59.4s Time]
[2023-12-22 19:44:13,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2023-12-22 19:44:13,140 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67.
[2023-12-22 19:44:13,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-22 19:44:13,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions.
[2023-12-22 19:44:13,142 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 141
[2023-12-22 19:44:13,142 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 19:44:13,142 INFO  L495      AbstractCegarLoop]: Abstraction has 67 states and 90 transitions.
[2023-12-22 19:44:13,143 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23)
[2023-12-22 19:44:13,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions.
[2023-12-22 19:44:13,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2023-12-22 19:44:13,144 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 19:44:13,144 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 19:44:13,163 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-12-22 19:44:13,375 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2023-12-22 19:44:13,560 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-22 19:44:13,560 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 19:44:13,561 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 19:44:13,561 INFO  L85        PathProgramCache]: Analyzing trace with hash -1081877992, now seen corresponding path program 1 times
[2023-12-22 19:44:13,561 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 19:44:13,561 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269859157]
[2023-12-22 19:44:13,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 19:44:13,562 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
[2023-12-22 19:44:13,562 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 19:44:13,564 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)
[2023-12-22 19:44:13,565 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 (6)] Waiting until timeout for monitored process
[2023-12-22 19:44:15,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 19:44:15,339 INFO  L262         TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 50 conjunts are in the unsatisfiable core
[2023-12-22 19:44:15,344 INFO  L285         TraceCheckSpWp]: Computing forward predicates...