/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-78.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-22 22:25:14,760 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-22 22:25:14,851 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-22 22:25:14,856 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-22 22:25:14,857 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-22 22:25:14,885 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-22 22:25:14,885 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-22 22:25:14,886 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-22 22:25:14,886 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-22 22:25:14,890 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-22 22:25:14,890 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-22 22:25:14,891 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-22 22:25:14,891 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-22 22:25:14,893 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-22 22:25:14,893 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-22 22:25:14,893 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-22 22:25:14,894 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-22 22:25:14,894 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-22 22:25:14,894 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-22 22:25:14,894 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-22 22:25:14,895 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-22 22:25:14,895 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-22 22:25:14,895 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-22 22:25:14,896 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-22 22:25:14,896 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-22 22:25:14,896 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-22 22:25:14,896 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-22 22:25:14,897 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-22 22:25:14,897 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-22 22:25:14,897 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-22 22:25:14,898 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-22 22:25:14,898 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-22 22:25:14,898 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-22 22:25:14,899 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-22 22:25:14,899 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 22:25:14,899 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-22 22:25:14,899 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-22 22:25:14,899 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-22 22:25:14,900 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-22 22:25:14,900 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-22 22:25:14,900 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-22 22:25:14,900 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-22 22:25:14,900 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-22 22:25:14,901 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-22 22:25:14,901 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-22 22:25:14,901 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-22 22:25:14,901 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-22 22:25:15,137 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-22 22:25:15,156 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-22 22:25:15,158 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-22 22:25:15,159 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-22 22:25:15,159 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-22 22:25:15,161 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-78.i
[2023-12-22 22:25:16,310 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-22 22:25:16,501 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-22 22:25:16,501 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-78.i
[2023-12-22 22:25:16,524 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adab66396/2199b4fb0c2540d98a79f4245b165fb9/FLAGbea76157b
[2023-12-22 22:25:16,536 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adab66396/2199b4fb0c2540d98a79f4245b165fb9
[2023-12-22 22:25:16,538 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-22 22:25:16,540 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-22 22:25:16,541 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-22 22:25:16,541 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-22 22:25:16,548 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-22 22:25:16,548 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,549 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bbe2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16, skipping insertion in model container
[2023-12-22 22:25:16,549 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,576 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-22 22:25:16,707 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-78.i[917,930]
[2023-12-22 22:25:16,762 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 22:25:16,775 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-22 22:25:16,785 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-78.i[917,930]
[2023-12-22 22:25:16,816 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 22:25:16,832 INFO  L206         MainTranslator]: Completed translation
[2023-12-22 22:25:16,832 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16 WrapperNode
[2023-12-22 22:25:16,832 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-22 22:25:16,833 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-22 22:25:16,833 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-22 22:25:16,834 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-22 22:25:16,840 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,852 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,880 INFO  L138                Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137
[2023-12-22 22:25:16,881 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-22 22:25:16,881 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-22 22:25:16,881 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-22 22:25:16,882 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-22 22:25:16,892 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,892 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,897 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,917 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-22 22:25:16,917 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,917 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,934 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,937 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,939 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,941 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,961 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-22 22:25:16,962 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-22 22:25:16,962 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-22 22:25:16,962 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-22 22:25:16,963 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (1/1) ...
[2023-12-22 22:25:16,969 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 22:25:16,981 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-22 22:25:17,001 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-22 22:25:17,011 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-22 22:25:17,029 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-22 22:25:17,030 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-22 22:25:17,030 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-22 22:25:17,030 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-22 22:25:17,030 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-22 22:25:17,030 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-22 22:25:17,093 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-22 22:25:17,097 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-22 22:25:23,383 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-22 22:25:23,461 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-22 22:25:23,461 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-22 22:25:23,462 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:25:23 BoogieIcfgContainer
[2023-12-22 22:25:23,462 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-22 22:25:23,464 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-22 22:25:23,464 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-22 22:25:23,466 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-22 22:25:23,467 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:25:16" (1/3) ...
[2023-12-22 22:25:23,467 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2a0051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:25:23, skipping insertion in model container
[2023-12-22 22:25:23,467 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:25:16" (2/3) ...
[2023-12-22 22:25:23,468 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2a0051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:25:23, skipping insertion in model container
[2023-12-22 22:25:23,468 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:25:23" (3/3) ...
[2023-12-22 22:25:23,469 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-78.i
[2023-12-22 22:25:23,484 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-22 22:25:23,485 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-22 22:25:23,522 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-22 22:25:23,528 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;@3a90d282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-22 22:25:23,528 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-22 22:25:23,532 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 57 states, 32 states have (on average 1.375) internal successors, (44), 33 states have internal predecessors, (44), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-12-22 22:25:23,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-22 22:25:23,550 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 22:25:23,551 INFO  L195           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 22:25:23,552 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 22:25:23,559 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 22:25:23,559 INFO  L85        PathProgramCache]: Analyzing trace with hash -1138436706, now seen corresponding path program 1 times
[2023-12-22 22:25:23,574 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 22:25:23,575 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953435321]
[2023-12-22 22:25:23,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 22:25:23,576 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 22:25:23,576 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 22:25:23,580 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 22:25:23,588 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-22 22:25:24,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 22:25:24,058 INFO  L262         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-22 22:25:24,069 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 22:25:24,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2023-12-22 22:25:24,115 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 22:25:24,116 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 22:25:24,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953435321]
[2023-12-22 22:25:24,117 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [953435321] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 22:25:24,117 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 22:25:24,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-22 22:25:24,119 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226051595]
[2023-12-22 22:25:24,120 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 22:25:24,125 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-22 22:25:24,125 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 22:25:24,160 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-22 22:25:24,160 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 22:25:24,162 INFO  L87              Difference]: Start difference. First operand  has 57 states, 32 states have (on average 1.375) internal successors, (44), 33 states have internal predecessors, (44), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)
[2023-12-22 22:25:28,097 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 22:25:28,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 22:25:28,098 INFO  L93              Difference]: Finished difference Result 111 states and 196 transitions.
[2023-12-22 22:25:28,149 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-22 22:25:28,151 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 135
[2023-12-22 22:25:28,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 22:25:28,157 INFO  L225             Difference]: With dead ends: 111
[2023-12-22 22:25:28,157 INFO  L226             Difference]: Without dead ends: 55
[2023-12-22 22:25:28,159 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-22 22:25:28,162 INFO  L413           NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2023-12-22 22:25:28,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2023-12-22 22:25:28,174 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2023-12-22 22:25:28,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2023-12-22 22:25:28,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-12-22 22:25:28,198 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 83 transitions.
[2023-12-22 22:25:28,199 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 83 transitions. Word has length 135
[2023-12-22 22:25:28,200 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 22:25:28,200 INFO  L495      AbstractCegarLoop]: Abstraction has 55 states and 83 transitions.
[2023-12-22 22:25:28,200 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)
[2023-12-22 22:25:28,201 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions.
[2023-12-22 22:25:28,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-22 22:25:28,204 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 22:25:28,204 INFO  L195           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 22:25:28,217 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
[2023-12-22 22:25:28,412 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 22:25:28,413 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 22:25:28,414 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 22:25:28,414 INFO  L85        PathProgramCache]: Analyzing trace with hash 1371989930, now seen corresponding path program 1 times
[2023-12-22 22:25:28,415 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 22:25:28,415 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325015184]
[2023-12-22 22:25:28,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 22:25:28,415 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 22:25:28,416 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 22:25:28,417 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 22:25:28,433 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-22 22:25:28,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 22:25:28,834 INFO  L262         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-22 22:25:28,840 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 22:25:29,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked.
[2023-12-22 22:25:29,053 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 22:25:29,054 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 22:25:29,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325015184]
[2023-12-22 22:25:29,056 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325015184] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 22:25:29,056 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 22:25:29,056 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-22 22:25:29,056 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844043064]
[2023-12-22 22:25:29,056 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 22:25:29,059 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-22 22:25:29,060 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 22:25:29,060 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-22 22:25:29,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-22 22:25:29,061 INFO  L87              Difference]: Start difference. First operand 55 states and 83 transitions. Second operand  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)
[2023-12-22 22:25:31,390 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 22:25:35,693 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 22:25:39,077 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-22 22:25:39,084 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 22:25:39,084 INFO  L93              Difference]: Finished difference Result 109 states and 165 transitions.
[2023-12-22 22:25:39,154 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-22 22:25:39,155 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 135
[2023-12-22 22:25:39,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 22:25:39,158 INFO  L225             Difference]: With dead ends: 109
[2023-12-22 22:25:39,158 INFO  L226             Difference]: Without dead ends: 55
[2023-12-22 22:25:39,159 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-22 22:25:39,160 INFO  L413           NwaCegarLoop]: 71 mSDtfsCounter, 15 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time
[2023-12-22 22:25:39,161 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time]
[2023-12-22 22:25:39,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2023-12-22 22:25:39,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2023-12-22 22:25:39,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-12-22 22:25:39,172 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions.
[2023-12-22 22:25:39,172 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 135
[2023-12-22 22:25:39,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 22:25:39,174 INFO  L495      AbstractCegarLoop]: Abstraction has 55 states and 82 transitions.
[2023-12-22 22:25:39,174 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)
[2023-12-22 22:25:39,175 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions.
[2023-12-22 22:25:39,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-22 22:25:39,177 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 22:25:39,177 INFO  L195           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 22:25:39,189 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2023-12-22 22:25:39,378 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 22:25:39,378 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 22:25:39,379 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 22:25:39,379 INFO  L85        PathProgramCache]: Analyzing trace with hash 978962920, now seen corresponding path program 1 times
[2023-12-22 22:25:39,380 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 22:25:39,380 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103931459]
[2023-12-22 22:25:39,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 22:25:39,380 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 22:25:39,381 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 22:25:39,382 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-22 22:25:39,382 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-12-22 22:25:39,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 22:25:39,810 INFO  L262         TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-22 22:25:39,815 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 22:25:40,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked.
[2023-12-22 22:25:40,405 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 22:25:40,405 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 22:25:40,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103931459]
[2023-12-22 22:25:40,405 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [103931459] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 22:25:40,406 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 22:25:40,406 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-22 22:25:40,406 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934740859]
[2023-12-22 22:25:40,406 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 22:25:40,407 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-22 22:25:40,407 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 22:25:40,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-22 22:25:40,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-22 22:25:40,408 INFO  L87              Difference]: Start difference. First operand 55 states and 82 transitions. Second operand  has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)
[2023-12-22 22:25:42,324 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 22:25:46,950 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 22:25:50,955 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 22:25:54,835 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 22:25:59,164 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 22:26:00,873 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-22 22:26:01,937 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 22:26:01,938 INFO  L93              Difference]: Finished difference Result 160 states and 239 transitions.
[2023-12-22 22:26:01,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-22 22:26:01,939 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 135
[2023-12-22 22:26:01,940 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 22:26:01,941 INFO  L225             Difference]: With dead ends: 160
[2023-12-22 22:26:01,941 INFO  L226             Difference]: Without dead ends: 106
[2023-12-22 22:26:01,942 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2023-12-22 22:26:01,943 INFO  L413           NwaCegarLoop]: 129 mSDtfsCounter, 145 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time
[2023-12-22 22:26:01,944 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 351 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 21.0s Time]
[2023-12-22 22:26:01,945 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2023-12-22 22:26:01,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 58.
[2023-12-22 22:26:01,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 58 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2023-12-22 22:26:01,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 86 transitions.
[2023-12-22 22:26:01,955 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 86 transitions. Word has length 135
[2023-12-22 22:26:01,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 22:26:01,956 INFO  L495      AbstractCegarLoop]: Abstraction has 58 states and 86 transitions.
[2023-12-22 22:26:01,956 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)
[2023-12-22 22:26:01,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions.
[2023-12-22 22:26:01,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2023-12-22 22:26:01,958 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 22:26:01,958 INFO  L195           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 22:26:01,972 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0
[2023-12-22 22:26:02,168 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
[2023-12-22 22:26:02,169 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 22:26:02,169 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 22:26:02,170 INFO  L85        PathProgramCache]: Analyzing trace with hash -1618694673, now seen corresponding path program 1 times
[2023-12-22 22:26:02,170 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 22:26:02,170 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748999069]
[2023-12-22 22:26:02,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 22:26:02,171 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-22 22:26:02,171 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 22:26:02,172 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)
[2023-12-22 22:26:02,176 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
[2023-12-22 22:26:02,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 22:26:02,803 INFO  L262         TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 37 conjunts are in the unsatisfiable core
[2023-12-22 22:26:02,812 INFO  L285         TraceCheckSpWp]: Computing forward predicates...