/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 10:44:27,136 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 10:44:27,205 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 10:44:27,209 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 10:44:27,210 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 10:44:27,231 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 10:44:27,232 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 10:44:27,232 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 10:44:27,232 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 10:44:27,235 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 10:44:27,235 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 10:44:27,236 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 10:44:27,236 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 10:44:27,237 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 10:44:27,237 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 10:44:27,238 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 10:44:27,238 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 10:44:27,238 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 10:44:27,238 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 10:44:27,238 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 10:44:27,238 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 10:44:27,239 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 10:44:27,239 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 10:44:27,239 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 10:44:27,239 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 10:44:27,239 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 10:44:27,240 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 10:44:27,240 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 10:44:27,240 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 10:44:27,240 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 10:44:27,241 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 10:44:27,241 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 10:44:27,241 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 10:44:27,241 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 10:44:27,241 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 10:44:27,242 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 10:44:27,242 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 10:44:27,242 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 10:44:27,242 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 10:44:27,242 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 10:44:27,242 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 10:44:27,242 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 10:44:27,243 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 10:44:27,243 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 10:44:27,243 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 10:44:27,243 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 10:44:27,243 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 10:44:27,429 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 10:44:27,448 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 10:44:27,450 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 10:44:27,451 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 10:44:27,451 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 10:44:27,453 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i
[2023-12-23 10:44:28,524 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 10:44:28,696 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 10:44:28,697 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i
[2023-12-23 10:44:28,705 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304d41088/f58f264bc40f443496696535d233b7f7/FLAG6ff3ca2c9
[2023-12-23 10:44:28,715 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304d41088/f58f264bc40f443496696535d233b7f7
[2023-12-23 10:44:28,717 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 10:44:28,718 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 10:44:28,719 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 10:44:28,719 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 10:44:28,723 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 10:44:28,724 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:28,725 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7800ece0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28, skipping insertion in model container
[2023-12-23 10:44:28,725 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:28,752 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 10:44:28,849 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i[919,932]
[2023-12-23 10:44:28,891 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 10:44:28,911 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 10:44:28,919 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i[919,932]
[2023-12-23 10:44:28,947 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 10:44:28,960 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 10:44:28,960 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28 WrapperNode
[2023-12-23 10:44:28,960 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 10:44:28,961 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 10:44:28,961 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 10:44:28,961 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 10:44:28,966 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:28,975 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,012 INFO  L138                Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 177
[2023-12-23 10:44:29,013 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 10:44:29,014 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 10:44:29,014 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 10:44:29,014 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 10:44:29,029 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,029 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,032 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,062 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 10:44:29,062 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,062 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,069 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,085 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,101 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,104 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,121 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 10:44:29,122 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 10:44:29,122 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 10:44:29,122 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 10:44:29,123 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (1/1) ...
[2023-12-23 10:44:29,144 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 10:44:29,152 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 10:44:29,163 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 10:44:29,175 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 10:44:29,190 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 10:44:29,191 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 10:44:29,191 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 10:44:29,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 10:44:29,193 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 10:44:29,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 10:44:29,284 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 10:44:29,285 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 10:44:29,893 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 10:44:29,922 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 10:44:29,922 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 10:44:29,922 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:44:29 BoogieIcfgContainer
[2023-12-23 10:44:29,923 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 10:44:29,924 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 10:44:29,924 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 10:44:29,926 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 10:44:29,926 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:44:28" (1/3) ...
[2023-12-23 10:44:29,927 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b2907e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:44:29, skipping insertion in model container
[2023-12-23 10:44:29,927 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:44:28" (2/3) ...
[2023-12-23 10:44:29,927 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b2907e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:44:29, skipping insertion in model container
[2023-12-23 10:44:29,927 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:44:29" (3/3) ...
[2023-12-23 10:44:29,928 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i
[2023-12-23 10:44:29,941 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 10:44:29,941 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 10:44:29,971 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 10:44:29,975 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;@7084878d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 10:44:29,975 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 10:44:29,981 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-23 10:44:29,990 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-23 10:44:29,991 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:44:29,991 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:29,992 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:44:29,995 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:44:29,996 INFO  L85        PathProgramCache]: Analyzing trace with hash 1928370018, now seen corresponding path program 1 times
[2023-12-23 10:44:30,005 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:44:30,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218885238]
[2023-12-23 10:44:30,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:44:30,006 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 10:44:30,006 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:44:30,007 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 10:44:30,012 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 10:44:30,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:44:30,252 INFO  L262         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 10:44:30,258 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:44:30,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2023-12-23 10:44:30,346 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 10:44:30,347 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:44:30,347 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218885238]
[2023-12-23 10:44:30,347 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [218885238] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 10:44:30,347 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 10:44:30,348 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 10:44:30,369 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503469]
[2023-12-23 10:44:30,371 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 10:44:30,376 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 10:44:30,376 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:44:30,418 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 10:44:30,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 10:44:30,427 INFO  L87              Difference]: Start difference. First operand  has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-23 10:44:30,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:44:30,487 INFO  L93              Difference]: Finished difference Result 133 states and 238 transitions.
[2023-12-23 10:44:30,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 10:44:30,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133
[2023-12-23 10:44:30,494 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:44:30,499 INFO  L225             Difference]: With dead ends: 133
[2023-12-23 10:44:30,499 INFO  L226             Difference]: Without dead ends: 66
[2023-12-23 10:44:30,501 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 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 10:44:30,503 INFO  L413           NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-23 10:44:30,504 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-23 10:44:30,514 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2023-12-23 10:44:30,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2023-12-23 10:44:30,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-23 10:44:30,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 104 transitions.
[2023-12-23 10:44:30,531 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 104 transitions. Word has length 133
[2023-12-23 10:44:30,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:44:30,531 INFO  L495      AbstractCegarLoop]: Abstraction has 66 states and 104 transitions.
[2023-12-23 10:44:30,531 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-23 10:44:30,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 104 transitions.
[2023-12-23 10:44:30,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-23 10:44:30,534 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:44:30,534 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:30,543 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-23 10:44:30,742 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 10:44:30,742 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:44:30,743 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:44:30,743 INFO  L85        PathProgramCache]: Analyzing trace with hash -784329314, now seen corresponding path program 1 times
[2023-12-23 10:44:30,744 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:44:30,744 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412833251]
[2023-12-23 10:44:30,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:44:30,744 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 10:44:30,745 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:44:30,746 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 10:44:30,748 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 10:44:30,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:44:31,006 INFO  L262         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 10:44:31,016 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:44:31,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 393 proven. 24 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked.
[2023-12-23 10:44:31,216 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 10:44:31,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked.
[2023-12-23 10:44:31,382 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:44:31,382 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412833251]
[2023-12-23 10:44:31,382 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412833251] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 10:44:31,382 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 10:44:31,382 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2023-12-23 10:44:31,383 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068006454]
[2023-12-23 10:44:31,383 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 10:44:31,384 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-23 10:44:31,384 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:44:31,385 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-23 10:44:31,385 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-12-23 10:44:31,385 INFO  L87              Difference]: Start difference. First operand 66 states and 104 transitions. Second operand  has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29)
[2023-12-23 10:44:32,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:44:32,058 INFO  L93              Difference]: Finished difference Result 208 states and 320 transitions.
[2023-12-23 10:44:32,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-23 10:44:32,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 133
[2023-12-23 10:44:32,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:44:32,061 INFO  L225             Difference]: With dead ends: 208
[2023-12-23 10:44:32,061 INFO  L226             Difference]: Without dead ends: 143
[2023-12-23 10:44:32,062 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306
[2023-12-23 10:44:32,062 INFO  L413           NwaCegarLoop]: 111 mSDtfsCounter, 368 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-23 10:44:32,063 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 325 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-23 10:44:32,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2023-12-23 10:44:32,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137.
[2023-12-23 10:44:32,094 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 137 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-23 10:44:32,095 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 211 transitions.
[2023-12-23 10:44:32,095 INFO  L78                 Accepts]: Start accepts. Automaton has 137 states and 211 transitions. Word has length 133
[2023-12-23 10:44:32,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:44:32,096 INFO  L495      AbstractCegarLoop]: Abstraction has 137 states and 211 transitions.
[2023-12-23 10:44:32,096 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29)
[2023-12-23 10:44:32,096 INFO  L276                IsEmpty]: Start isEmpty. Operand 137 states and 211 transitions.
[2023-12-23 10:44:32,098 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-23 10:44:32,098 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:44:32,098 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:32,121 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 10:44:32,298 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 10:44:32,299 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:44:32,299 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:44:32,299 INFO  L85        PathProgramCache]: Analyzing trace with hash 1922290080, now seen corresponding path program 1 times
[2023-12-23 10:44:32,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:44:32,300 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881129187]
[2023-12-23 10:44:32,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:44:32,300 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 10:44:32,301 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:44:32,303 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 10:44:32,305 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 10:44:32,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:44:32,564 INFO  L262         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 10:44:32,568 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:44:32,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-23 10:44:32,726 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 10:44:32,726 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:44:32,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881129187]
[2023-12-23 10:44:32,726 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881129187] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 10:44:32,726 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 10:44:32,727 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 10:44:32,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830050974]
[2023-12-23 10:44:32,727 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 10:44:32,727 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 10:44:32,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:44:32,728 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 10:44:32,728 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 10:44:32,728 INFO  L87              Difference]: Start difference. First operand 137 states and 211 transitions. Second operand  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 10:44:32,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:44:32,896 INFO  L93              Difference]: Finished difference Result 303 states and 466 transitions.
[2023-12-23 10:44:32,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 10:44:32,900 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 133
[2023-12-23 10:44:32,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:44:32,902 INFO  L225             Difference]: With dead ends: 303
[2023-12-23 10:44:32,902 INFO  L226             Difference]: Without dead ends: 167
[2023-12-23 10:44:32,903 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 10:44:32,903 INFO  L413           NwaCegarLoop]: 138 mSDtfsCounter, 99 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 10:44:32,904 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 333 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 10:44:32,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2023-12-23 10:44:32,918 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 147.
[2023-12-23 10:44:32,919 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 147 states, 102 states have (on average 1.4313725490196079) internal successors, (146), 102 states have internal predecessors, (146), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-23 10:44:32,925 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 226 transitions.
[2023-12-23 10:44:32,925 INFO  L78                 Accepts]: Start accepts. Automaton has 147 states and 226 transitions. Word has length 133
[2023-12-23 10:44:32,926 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:44:32,927 INFO  L495      AbstractCegarLoop]: Abstraction has 147 states and 226 transitions.
[2023-12-23 10:44:32,927 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 10:44:32,927 INFO  L276                IsEmpty]: Start isEmpty. Operand 147 states and 226 transitions.
[2023-12-23 10:44:32,932 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2023-12-23 10:44:32,933 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:44:32,933 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:32,942 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 10:44:33,141 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 10:44:33,142 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:44:33,143 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:44:33,144 INFO  L85        PathProgramCache]: Analyzing trace with hash -1271521747, now seen corresponding path program 1 times
[2023-12-23 10:44:33,144 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:44:33,144 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90478351]
[2023-12-23 10:44:33,144 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:44:33,145 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 10:44:33,145 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:44:33,146 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 10:44:33,171 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 10:44:33,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:44:33,380 INFO  L262         TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 10:44:33,383 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:44:33,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-23 10:44:33,796 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 10:44:33,799 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:44:33,799 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90478351]
[2023-12-23 10:44:33,799 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [90478351] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 10:44:33,799 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 10:44:33,799 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-23 10:44:33,799 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924119772]
[2023-12-23 10:44:33,799 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 10:44:33,801 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-23 10:44:33,802 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:44:33,802 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-23 10:44:33,803 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-23 10:44:33,803 INFO  L87              Difference]: Start difference. First operand 147 states and 226 transitions. Second operand  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 10:44:34,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:44:34,714 INFO  L93              Difference]: Finished difference Result 505 states and 778 transitions.
[2023-12-23 10:44:34,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-23 10:44:34,715 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 134
[2023-12-23 10:44:34,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:44:34,717 INFO  L225             Difference]: With dead ends: 505
[2023-12-23 10:44:34,717 INFO  L226             Difference]: Without dead ends: 359
[2023-12-23 10:44:34,718 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2023-12-23 10:44:34,719 INFO  L413           NwaCegarLoop]: 165 mSDtfsCounter, 94 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-23 10:44:34,719 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 508 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-23 10:44:34,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 359 states.
[2023-12-23 10:44:34,790 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 341.
[2023-12-23 10:44:34,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 341 states, 230 states have (on average 1.3869565217391304) internal successors, (319), 230 states have internal predecessors, (319), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100)
[2023-12-23 10:44:34,794 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 519 transitions.
[2023-12-23 10:44:34,794 INFO  L78                 Accepts]: Start accepts. Automaton has 341 states and 519 transitions. Word has length 134
[2023-12-23 10:44:34,795 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:44:34,795 INFO  L495      AbstractCegarLoop]: Abstraction has 341 states and 519 transitions.
[2023-12-23 10:44:34,795 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 10:44:34,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 341 states and 519 transitions.
[2023-12-23 10:44:34,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-23 10:44:34,797 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:44:34,797 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:34,808 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-23 10:44:35,006 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 10:44:35,006 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:44:35,007 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:44:35,007 INFO  L85        PathProgramCache]: Analyzing trace with hash 579263061, now seen corresponding path program 1 times
[2023-12-23 10:44:35,008 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:44:35,008 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711753579]
[2023-12-23 10:44:35,008 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:44:35,009 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 10:44:35,009 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:44:35,021 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 10:44:35,022 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 10:44:36,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:44:36,068 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-12-23 10:44:36,072 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:44:48,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 403 proven. 168 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked.
[2023-12-23 10:44:48,057 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 10:46:17,066 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:46:17,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711753579]
[2023-12-23 10:46:17,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [711753579] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 10:46:17,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1841986082]
[2023-12-23 10:46:17,067 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:46:17,067 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 10:46:17,067 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 10:46:17,108 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 10:46:17,109 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2023-12-23 10:46:18,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:46:18,120 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 43 conjunts are in the unsatisfiable core
[2023-12-23 10:46:18,125 INFO  L285         TraceCheckSpWp]: Computing forward predicates...