/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-53.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 17:36:34,827 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 17:36:34,868 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-23 17:36:34,871 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 17:36:34,872 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 17:36:34,886 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 17:36:34,886 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 17:36:34,887 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 17:36:34,887 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 17:36:34,887 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 17:36:34,887 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 17:36:34,888 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 17:36:34,888 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 17:36:34,888 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 17:36:34,888 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 17:36:34,889 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 17:36:34,889 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 17:36:34,889 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 17:36:34,889 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 17:36:34,889 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 17:36:34,889 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 17:36:34,890 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 17:36:34,890 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 17:36:34,890 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 17:36:34,890 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 17:36:34,890 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 17:36:34,891 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 17:36:34,891 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 17:36:34,891 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 17:36:34,891 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 17:36:34,891 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 17:36:34,892 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 17:36:34,892 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 17:36:34,892 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 17:36:34,892 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 17:36:34,892 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 17:36:34,892 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 17:36:34,892 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 17:36:34,893 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 17:36:34,893 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 17:36:34,893 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 17:36:34,893 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 17:36:34,893 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 17:36:34,893 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 17:36:34,894 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 17:36:34,894 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 17:36:34,894 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 17:36:35,060 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 17:36:35,087 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 17:36:35,089 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 17:36:35,090 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 17:36:35,090 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 17:36:35,091 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-53.i
[2023-12-23 17:36:36,134 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 17:36:36,282 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 17:36:36,282 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-53.i
[2023-12-23 17:36:36,289 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36619b3d/01b17a078a0b4cc8ab3d7ded01186c76/FLAG833a40284
[2023-12-23 17:36:36,299 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36619b3d/01b17a078a0b4cc8ab3d7ded01186c76
[2023-12-23 17:36:36,300 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 17:36:36,301 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 17:36:36,302 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 17:36:36,302 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 17:36:36,305 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 17:36:36,306 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,307 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5715ec2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36, skipping insertion in model container
[2023-12-23 17:36:36,307 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,326 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 17:36:36,441 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-53.i[913,926]
[2023-12-23 17:36:36,485 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 17:36:36,496 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 17:36:36,505 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-53.i[913,926]
[2023-12-23 17:36:36,526 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 17:36:36,541 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 17:36:36,541 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36 WrapperNode
[2023-12-23 17:36:36,541 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 17:36:36,542 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 17:36:36,542 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 17:36:36,542 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 17:36:36,547 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,555 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,573 INFO  L138                Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133
[2023-12-23 17:36:36,574 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 17:36:36,574 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 17:36:36,574 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 17:36:36,574 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 17:36:36,588 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,588 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,591 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,600 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-23 17:36:36,600 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,600 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,611 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,614 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,616 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,617 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,619 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 17:36:36,620 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 17:36:36,620 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 17:36:36,620 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 17:36:36,620 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (1/1) ...
[2023-12-23 17:36:36,625 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 17:36:36,644 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 17:36:36,656 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:36,664 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-23 17:36:36,678 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 17:36:36,679 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 17:36:36,679 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 17:36:36,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 17:36:36,679 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 17:36:36,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 17:36:36,732 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 17:36:36,734 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 17:36:37,333 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 17:36:37,370 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 17:36:37,370 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 17:36:37,370 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:37 BoogieIcfgContainer
[2023-12-23 17:36:37,371 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 17:36:37,372 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 17:36:37,372 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 17:36:37,374 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 17:36:37,375 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:36:36" (1/3) ...
[2023-12-23 17:36:37,375 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2be51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:37, skipping insertion in model container
[2023-12-23 17:36:37,375 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:36:36" (2/3) ...
[2023-12-23 17:36:37,375 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2be51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:36:37, skipping insertion in model container
[2023-12-23 17:36:37,376 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:36:37" (3/3) ...
[2023-12-23 17:36:37,376 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-53.i
[2023-12-23 17:36:37,389 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 17:36:37,389 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 17:36:37,427 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 17:36:37,431 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;@122d6157, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 17:36:37,431 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 17:36:37,437 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 52 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-23 17:36:37,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-23 17:36:37,445 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:36:37,446 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 17:36:37,447 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:36:37,450 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:36:37,451 INFO  L85        PathProgramCache]: Analyzing trace with hash 130413106, now seen corresponding path program 1 times
[2023-12-23 17:36:37,462 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:36:37,462 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686679411]
[2023-12-23 17:36:37,462 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:36:37,463 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:37,463 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:36:37,465 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:37,468 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-23 17:36:37,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:36:37,677 INFO  L262         TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 17:36:37,684 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:36:37,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-12-23 17:36:37,711 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 17:36:37,712 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:36:37,712 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686679411]
[2023-12-23 17:36:37,712 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [686679411] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 17:36:37,712 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 17:36:37,712 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 17:36:37,714 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369805616]
[2023-12-23 17:36:37,714 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 17:36:37,717 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 17:36:37,717 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:36:37,736 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 17:36:37,736 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 17:36:37,738 INFO  L87              Difference]: Start difference. First operand  has 52 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)
[2023-12-23 17:36:37,869 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:36:37,869 INFO  L93              Difference]: Finished difference Result 101 states and 175 transitions.
[2023-12-23 17:36:37,882 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 17:36:37,884 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 108
[2023-12-23 17:36:37,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:36:37,889 INFO  L225             Difference]: With dead ends: 101
[2023-12-23 17:36:37,889 INFO  L226             Difference]: Without dead ends: 50
[2023-12-23 17:36:37,891 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 17:36:37,893 INFO  L413           NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 17:36:37,894 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 17:36:37,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2023-12-23 17:36:37,928 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2023-12-23 17:36:37,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2023-12-23 17:36:37,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 75 transitions.
[2023-12-23 17:36:37,936 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 75 transitions. Word has length 108
[2023-12-23 17:36:37,937 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:36:37,937 INFO  L495      AbstractCegarLoop]: Abstraction has 50 states and 75 transitions.
[2023-12-23 17:36:37,937 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)
[2023-12-23 17:36:37,937 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 75 transitions.
[2023-12-23 17:36:37,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2023-12-23 17:36:37,941 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:36:37,941 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 17:36:37,951 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-23 17:36:38,148 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:38,149 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:36:38,150 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:36:38,150 INFO  L85        PathProgramCache]: Analyzing trace with hash -1221391556, now seen corresponding path program 1 times
[2023-12-23 17:36:38,150 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:36:38,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686457517]
[2023-12-23 17:36:38,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:36:38,151 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:38,151 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:36:38,153 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:38,184 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-23 17:36:38,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:36:38,372 INFO  L262         TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 17:36:38,376 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:36:38,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-12-23 17:36:38,415 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 17:36:38,415 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:36:38,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686457517]
[2023-12-23 17:36:38,415 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686457517] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 17:36:38,415 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 17:36:38,415 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 17:36:38,415 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968040533]
[2023-12-23 17:36:38,416 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 17:36:38,417 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 17:36:38,417 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:36:38,417 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 17:36:38,417 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 17:36:38,418 INFO  L87              Difference]: Start difference. First operand 50 states and 75 transitions. Second operand  has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-23 17:36:38,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:36:38,794 INFO  L93              Difference]: Finished difference Result 146 states and 219 transitions.
[2023-12-23 17:36:38,795 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 17:36:38,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108
[2023-12-23 17:36:38,796 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:36:38,797 INFO  L225             Difference]: With dead ends: 146
[2023-12-23 17:36:38,798 INFO  L226             Difference]: Without dead ends: 97
[2023-12-23 17:36:38,798 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 17:36:38,799 INFO  L413           NwaCegarLoop]: 126 mSDtfsCounter, 66 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 17:36:38,799 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 189 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 17:36:38,800 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2023-12-23 17:36:38,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95.
[2023-12-23 17:36:38,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-23 17:36:38,819 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 142 transitions.
[2023-12-23 17:36:38,819 INFO  L78                 Accepts]: Start accepts. Automaton has 95 states and 142 transitions. Word has length 108
[2023-12-23 17:36:38,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:36:38,820 INFO  L495      AbstractCegarLoop]: Abstraction has 95 states and 142 transitions.
[2023-12-23 17:36:38,820 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-23 17:36:38,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 95 states and 142 transitions.
[2023-12-23 17:36:38,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2023-12-23 17:36:38,825 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:36:38,825 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 17:36:38,834 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-23 17:36:39,032 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:39,032 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:36:39,033 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:36:39,033 INFO  L85        PathProgramCache]: Analyzing trace with hash 782034352, now seen corresponding path program 1 times
[2023-12-23 17:36:39,034 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:36:39,034 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091412107]
[2023-12-23 17:36:39,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:36:39,034 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:39,034 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:36:39,035 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:39,053 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-12-23 17:36:39,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:36:39,241 INFO  L262         TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 17:36:39,244 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:36:39,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-12-23 17:36:39,436 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 17:36:39,436 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:36:39,439 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091412107]
[2023-12-23 17:36:39,441 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091412107] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 17:36:39,441 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 17:36:39,443 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 17:36:39,446 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020139628]
[2023-12-23 17:36:39,446 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 17:36:39,446 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 17:36:39,446 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:36:39,447 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 17:36:39,447 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 17:36:39,447 INFO  L87              Difference]: Start difference. First operand 95 states and 142 transitions. Second operand  has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-23 17:36:39,751 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:36:39,751 INFO  L93              Difference]: Finished difference Result 197 states and 293 transitions.
[2023-12-23 17:36:39,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 17:36:39,757 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109
[2023-12-23 17:36:39,757 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:36:39,758 INFO  L225             Difference]: With dead ends: 197
[2023-12-23 17:36:39,758 INFO  L226             Difference]: Without dead ends: 103
[2023-12-23 17:36:39,759 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 17:36:39,761 INFO  L413           NwaCegarLoop]: 68 mSDtfsCounter, 16 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-23 17:36:39,762 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 131 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-23 17:36:39,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2023-12-23 17:36:39,770 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101.
[2023-12-23 17:36:39,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 101 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-23 17:36:39,772 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 149 transitions.
[2023-12-23 17:36:39,776 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 149 transitions. Word has length 109
[2023-12-23 17:36:39,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:36:39,777 INFO  L495      AbstractCegarLoop]: Abstraction has 101 states and 149 transitions.
[2023-12-23 17:36:39,777 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-23 17:36:39,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 149 transitions.
[2023-12-23 17:36:39,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2023-12-23 17:36:39,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:36:39,783 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 17:36:39,792 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
[2023-12-23 17:36:39,988 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:39,989 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:36:39,989 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:36:39,989 INFO  L85        PathProgramCache]: Analyzing trace with hash -1855063794, now seen corresponding path program 1 times
[2023-12-23 17:36:39,990 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:36:39,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579452789]
[2023-12-23 17:36:39,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:36:39,990 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:39,990 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:36:39,991 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:39,993 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 17:36:40,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:36:40,162 INFO  L262         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 17:36:40,165 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:36:40,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-12-23 17:36:40,206 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 17:36:40,206 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:36:40,208 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579452789]
[2023-12-23 17:36:40,208 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [579452789] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 17:36:40,209 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 17:36:40,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 17:36:40,209 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928447098]
[2023-12-23 17:36:40,209 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 17:36:40,210 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 17:36:40,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:36:40,212 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 17:36:40,213 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 17:36:40,213 INFO  L87              Difference]: Start difference. First operand 101 states and 149 transitions. Second operand  has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-23 17:36:40,779 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:36:40,779 INFO  L93              Difference]: Finished difference Result 258 states and 380 transitions.
[2023-12-23 17:36:40,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 17:36:40,779 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109
[2023-12-23 17:36:40,780 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:36:40,781 INFO  L225             Difference]: With dead ends: 258
[2023-12-23 17:36:40,781 INFO  L226             Difference]: Without dead ends: 158
[2023-12-23 17:36:40,782 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 17:36:40,782 INFO  L413           NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-23 17:36:40,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 195 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-23 17:36:40,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2023-12-23 17:36:40,794 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 103.
[2023-12-23 17:36:40,795 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-23 17:36:40,796 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 151 transitions.
[2023-12-23 17:36:40,796 INFO  L78                 Accepts]: Start accepts. Automaton has 103 states and 151 transitions. Word has length 109
[2023-12-23 17:36:40,796 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:36:40,797 INFO  L495      AbstractCegarLoop]: Abstraction has 103 states and 151 transitions.
[2023-12-23 17:36:40,797 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)
[2023-12-23 17:36:40,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 103 states and 151 transitions.
[2023-12-23 17:36:40,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2023-12-23 17:36:40,798 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:36:40,798 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 17:36:40,810 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-23 17:36:41,008 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:41,008 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:36:41,009 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:36:41,009 INFO  L85        PathProgramCache]: Analyzing trace with hash -1797805492, now seen corresponding path program 1 times
[2023-12-23 17:36:41,009 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:36:41,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802573562]
[2023-12-23 17:36:41,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:36:41,010 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:41,010 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:36:41,011 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:41,013 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-12-23 17:36:41,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:36:41,182 INFO  L262         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-23 17:36:41,185 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:36:41,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 106 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2023-12-23 17:36:41,299 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 17:36:41,448 INFO  L134       CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked.
[2023-12-23 17:36:41,448 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:36:41,448 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802573562]
[2023-12-23 17:36:41,448 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [802573562] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 17:36:41,448 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 17:36:41,448 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2023-12-23 17:36:41,448 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793574716]
[2023-12-23 17:36:41,448 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 17:36:41,449 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-23 17:36:41,449 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:36:41,449 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-23 17:36:41,450 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2023-12-23 17:36:41,450 INFO  L87              Difference]: Start difference. First operand 103 states and 151 transitions. Second operand  has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)
[2023-12-23 17:36:42,841 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:36:42,841 INFO  L93              Difference]: Finished difference Result 329 states and 468 transitions.
[2023-12-23 17:36:42,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-12-23 17:36:42,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 109
[2023-12-23 17:36:42,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:36:42,845 INFO  L225             Difference]: With dead ends: 329
[2023-12-23 17:36:42,845 INFO  L226             Difference]: Without dead ends: 227
[2023-12-23 17:36:42,846 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992
[2023-12-23 17:36:42,847 INFO  L413           NwaCegarLoop]: 97 mSDtfsCounter, 238 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-12-23 17:36:42,847 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 457 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-12-23 17:36:42,847 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2023-12-23 17:36:42,862 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 109.
[2023-12-23 17:36:42,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 109 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 70 states have internal predecessors, (86), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-23 17:36:42,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions.
[2023-12-23 17:36:42,863 INFO  L78                 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 109
[2023-12-23 17:36:42,864 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:36:42,864 INFO  L495      AbstractCegarLoop]: Abstraction has 109 states and 154 transitions.
[2023-12-23 17:36:42,864 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)
[2023-12-23 17:36:42,864 INFO  L276                IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions.
[2023-12-23 17:36:42,865 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2023-12-23 17:36:42,865 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:36:42,865 INFO  L195           NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 17:36:42,878 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2023-12-23 17:36:43,072 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:43,074 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:36:43,074 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:36:43,074 INFO  L85        PathProgramCache]: Analyzing trace with hash -1681935842, now seen corresponding path program 1 times
[2023-12-23 17:36:43,075 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:36:43,075 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878369656]
[2023-12-23 17:36:43,075 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:36:43,075 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:36:43,075 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:36:43,076 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:36:43,079 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-12-23 17:36:43,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:36:43,240 INFO  L262         TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core
[2023-12-23 17:36:43,245 INFO  L285         TraceCheckSpWp]: Computing forward predicates...