/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_loopvsstraightlinecode_100-1loop_file-61.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 21:44:38,742 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 21:44:38,826 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 21:44:38,830 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 21:44:38,831 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 21:44:38,858 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 21:44:38,859 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 21:44:38,859 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 21:44:38,860 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 21:44:38,863 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 21:44:38,863 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 21:44:38,864 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 21:44:38,865 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 21:44:38,866 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 21:44:38,866 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 21:44:38,867 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 21:44:38,867 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 21:44:38,867 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 21:44:38,867 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 21:44:38,868 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 21:44:38,869 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 21:44:38,869 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 21:44:38,869 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 21:44:38,869 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 21:44:38,870 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 21:44:38,870 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 21:44:38,870 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 21:44:38,870 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 21:44:38,870 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 21:44:38,871 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 21:44:38,871 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 21:44:38,872 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 21:44:38,872 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 21:44:38,872 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 21:44:38,872 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 21:44:38,872 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 21:44:38,872 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 21:44:38,872 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 21:44:38,873 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 21:44:38,873 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 21:44:38,873 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 21:44:38,873 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 21:44:38,873 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 21:44:38,873 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 21:44:38,874 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 21:44:38,874 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 21:44:38,874 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 21:44:39,108 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 21:44:39,135 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 21:44:39,138 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 21:44:39,139 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 21:44:39,140 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 21:44:39,142 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-61.i
[2023-12-23 21:44:40,337 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 21:44:40,582 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 21:44:40,583 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-61.i
[2023-12-23 21:44:40,597 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7755d14/cb21aac9e61c4db39361f9a35fa46fd6/FLAGa64b055fb
[2023-12-23 21:44:40,614 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7755d14/cb21aac9e61c4db39361f9a35fa46fd6
[2023-12-23 21:44:40,616 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 21:44:40,617 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 21:44:40,618 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 21:44:40,618 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 21:44:40,624 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 21:44:40,624 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:40,625 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf56232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40, skipping insertion in model container
[2023-12-23 21:44:40,625 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:40,656 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 21:44:40,776 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_loopvsstraightlinecode_100-1loop_file-61.i[916,929]
[2023-12-23 21:44:40,843 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 21:44:40,856 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 21:44:40,871 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_loopvsstraightlinecode_100-1loop_file-61.i[916,929]
[2023-12-23 21:44:40,924 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 21:44:40,950 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 21:44:40,950 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40 WrapperNode
[2023-12-23 21:44:40,951 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 21:44:40,951 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 21:44:40,951 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 21:44:40,952 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 21:44:40,957 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:40,968 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,004 INFO  L138                Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 197
[2023-12-23 21:44:41,005 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 21:44:41,005 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 21:44:41,006 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 21:44:41,006 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 21:44:41,016 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,016 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,021 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,034 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 21:44:41,035 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,035 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,058 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,062 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,064 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,066 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,070 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 21:44:41,071 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 21:44:41,071 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 21:44:41,071 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 21:44:41,072 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ...
[2023-12-23 21:44:41,077 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 21:44:41,087 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 21:44:41,098 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 21:44:41,126 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 21:44:41,134 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 21:44:41,134 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 21:44:41,134 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 21:44:41,134 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 21:44:41,134 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 21:44:41,134 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 21:44:41,235 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 21:44:41,240 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 21:44:41,834 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 21:44:41,962 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 21:44:41,963 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 21:44:41,963 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:44:41 BoogieIcfgContainer
[2023-12-23 21:44:41,963 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 21:44:41,965 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 21:44:41,965 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 21:44:41,968 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 21:44:41,968 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:44:40" (1/3) ...
[2023-12-23 21:44:41,969 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247411e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:44:41, skipping insertion in model container
[2023-12-23 21:44:41,969 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (2/3) ...
[2023-12-23 21:44:41,969 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247411e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:44:41, skipping insertion in model container
[2023-12-23 21:44:41,969 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:44:41" (3/3) ...
[2023-12-23 21:44:41,970 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-61.i
[2023-12-23 21:44:41,986 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 21:44:41,986 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 21:44:42,039 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 21:44:42,046 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;@43fc82d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 21:44:42,046 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 21:44:42,057 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 79 states, 50 states have (on average 1.52) internal successors, (76), 51 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 21:44:42,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2023-12-23 21:44:42,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 21:44:42,079 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:42,079 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 21:44:42,083 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 21:44:42,083 INFO  L85        PathProgramCache]: Analyzing trace with hash 269210861, now seen corresponding path program 1 times
[2023-12-23 21:44:42,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 21:44:42,097 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396218241]
[2023-12-23 21:44:42,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 21:44:42,097 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 21:44:42,098 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 21:44:42,104 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 21:44:42,148 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 21:44:42,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 21:44:42,412 INFO  L262         TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 21:44:42,420 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 21:44:42,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked.
[2023-12-23 21:44:42,491 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 21:44:42,491 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 21:44:42,491 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396218241]
[2023-12-23 21:44:42,492 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396218241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 21:44:42,492 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 21:44:42,492 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 21:44:42,499 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107257412]
[2023-12-23 21:44:42,502 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 21:44:42,506 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 21:44:42,507 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 21:44:42,536 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 21:44:42,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 21:44:42,539 INFO  L87              Difference]: Start difference. First operand  has 79 states, 50 states have (on average 1.52) internal successors, (76), 51 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-23 21:44:42,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 21:44:42,736 INFO  L93              Difference]: Finished difference Result 157 states and 281 transitions.
[2023-12-23 21:44:42,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 21:44:42,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164
[2023-12-23 21:44:42,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 21:44:42,747 INFO  L225             Difference]: With dead ends: 157
[2023-12-23 21:44:42,747 INFO  L226             Difference]: Without dead ends: 77
[2023-12-23 21:44:42,751 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 163 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 21:44:42,755 INFO  L413           NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 21:44:42,756 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 21:44:42,770 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-12-23 21:44:42,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2023-12-23 21:44:42,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 21:44:42,814 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions.
[2023-12-23 21:44:42,815 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 164
[2023-12-23 21:44:42,816 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 21:44:42,816 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 123 transitions.
[2023-12-23 21:44:42,817 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-23 21:44:42,817 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions.
[2023-12-23 21:44:42,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2023-12-23 21:44:42,825 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 21:44:42,826 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:42,843 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 21:44:43,036 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 21:44:43,037 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 21:44:43,038 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 21:44:43,038 INFO  L85        PathProgramCache]: Analyzing trace with hash -225792091, now seen corresponding path program 1 times
[2023-12-23 21:44:43,039 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 21:44:43,039 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961000312]
[2023-12-23 21:44:43,040 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 21:44:43,040 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 21:44:43,040 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 21:44:43,041 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 21:44:43,043 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 21:44:43,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 21:44:43,321 INFO  L262         TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 21:44:43,327 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 21:44:43,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 435 proven. 60 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked.
[2023-12-23 21:44:43,740 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 21:44:44,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2023-12-23 21:44:44,076 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 21:44:44,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961000312]
[2023-12-23 21:44:44,077 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961000312] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 21:44:44,077 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 21:44:44,078 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2023-12-23 21:44:44,078 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933827756]
[2023-12-23 21:44:44,078 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 21:44:44,079 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-23 21:44:44,080 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 21:44:44,081 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-23 21:44:44,081 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-12-23 21:44:44,081 INFO  L87              Difference]: Start difference. First operand 77 states and 123 transitions. Second operand  has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47)
[2023-12-23 21:44:45,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 21:44:45,044 INFO  L93              Difference]: Finished difference Result 243 states and 377 transitions.
[2023-12-23 21:44:45,044 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-12-23 21:44:45,045 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 164
[2023-12-23 21:44:45,046 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 21:44:45,048 INFO  L225             Difference]: With dead ends: 243
[2023-12-23 21:44:45,048 INFO  L226             Difference]: Without dead ends: 167
[2023-12-23 21:44:45,049 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2023-12-23 21:44:45,050 INFO  L413           NwaCegarLoop]: 84 mSDtfsCounter, 319 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-23 21:44:45,050 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 271 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-23 21:44:45,051 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2023-12-23 21:44:45,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 86.
[2023-12-23 21:44:45,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 21:44:45,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 130 transitions.
[2023-12-23 21:44:45,086 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 130 transitions. Word has length 164
[2023-12-23 21:44:45,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 21:44:45,089 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 130 transitions.
[2023-12-23 21:44:45,089 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47)
[2023-12-23 21:44:45,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 130 transitions.
[2023-12-23 21:44:45,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2023-12-23 21:44:45,093 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 21:44:45,094 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:45,108 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 21:44:45,305 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 21:44:45,305 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 21:44:45,306 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 21:44:45,306 INFO  L85        PathProgramCache]: Analyzing trace with hash 1589445806, now seen corresponding path program 1 times
[2023-12-23 21:44:45,307 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 21:44:45,307 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527463239]
[2023-12-23 21:44:45,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 21:44:45,307 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 21:44:45,308 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 21:44:45,309 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 21:44:45,312 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 21:44:45,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 21:44:45,590 INFO  L262         TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-23 21:44:45,596 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 21:44:46,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 584 proven. 105 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked.
[2023-12-23 21:44:46,822 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 21:44:47,073 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 21:44:47,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527463239]
[2023-12-23 21:44:47,073 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [527463239] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 21:44:47,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1185709488]
[2023-12-23 21:44:47,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 21:44:47,074 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 21:44:47,074 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 21:44:47,111 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)
[2023-12-23 21:44:47,133 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2023-12-23 21:44:48,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 21:44:48,377 INFO  L262         TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-23 21:44:48,394 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 21:44:50,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 333 proven. 9 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked.
[2023-12-23 21:44:50,183 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 21:44:53,644 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1185709488] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 21:44:53,645 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 21:44:53,645 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16
[2023-12-23 21:44:53,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734411614]
[2023-12-23 21:44:53,645 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 21:44:53,646 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-12-23 21:44:53,646 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 21:44:53,647 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-12-23 21:44:53,647 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420
[2023-12-23 21:44:53,648 INFO  L87              Difference]: Start difference. First operand 86 states and 130 transitions. Second operand  has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52)
[2023-12-23 21:44:58,326 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 21:44:58,326 INFO  L93              Difference]: Finished difference Result 466 states and 685 transitions.
[2023-12-23 21:44:58,328 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2023-12-23 21:44:58,328 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 165
[2023-12-23 21:44:58,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 21:44:58,332 INFO  L225             Difference]: With dead ends: 466
[2023-12-23 21:44:58,332 INFO  L226             Difference]: Without dead ends: 381
[2023-12-23 21:44:58,334 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=543, Invalid=1907, Unknown=0, NotChecked=0, Total=2450
[2023-12-23 21:44:58,335 INFO  L413           NwaCegarLoop]: 92 mSDtfsCounter, 673 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2023-12-23 21:44:58,335 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 835 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2023-12-23 21:44:58,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 381 states.
[2023-12-23 21:44:58,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 251.
[2023-12-23 21:44:58,371 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251 states, 161 states have (on average 1.2919254658385093) internal successors, (208), 161 states have internal predecessors, (208), 78 states have call successors, (78), 11 states have call predecessors, (78), 11 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78)
[2023-12-23 21:44:58,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 364 transitions.
[2023-12-23 21:44:58,373 INFO  L78                 Accepts]: Start accepts. Automaton has 251 states and 364 transitions. Word has length 165
[2023-12-23 21:44:58,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 21:44:58,374 INFO  L495      AbstractCegarLoop]: Abstraction has 251 states and 364 transitions.
[2023-12-23 21:44:58,374 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52)
[2023-12-23 21:44:58,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 251 states and 364 transitions.
[2023-12-23 21:44:58,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2023-12-23 21:44:58,376 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 21:44:58,376 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:58,388 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 21:44:58,594 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2023-12-23 21:44:58,788 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
[2023-12-23 21:44:58,788 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 21:44:58,789 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 21:44:58,789 INFO  L85        PathProgramCache]: Analyzing trace with hash 269762184, now seen corresponding path program 1 times
[2023-12-23 21:44:58,790 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 21:44:58,790 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422598171]
[2023-12-23 21:44:58,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 21:44:58,790 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 21:44:58,790 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 21:44:58,791 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 21:44:58,797 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 21:44:59,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 21:44:59,114 INFO  L262         TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 45 conjunts are in the unsatisfiable core
[2023-12-23 21:44:59,121 INFO  L285         TraceCheckSpWp]: Computing forward predicates...