/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-ps-ci_file-50.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 14:21:07,504 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 14:21:07,579 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 14:21:07,582 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 14:21:07,583 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 14:21:07,607 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 14:21:07,608 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 14:21:07,609 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 14:21:07,609 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 14:21:07,612 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 14:21:07,613 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 14:21:07,613 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 14:21:07,614 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 14:21:07,615 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 14:21:07,615 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 14:21:07,615 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 14:21:07,616 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 14:21:07,616 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 14:21:07,616 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 14:21:07,616 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 14:21:07,616 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 14:21:07,616 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 14:21:07,617 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 14:21:07,617 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 14:21:07,617 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 14:21:07,617 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 14:21:07,617 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 14:21:07,617 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 14:21:07,618 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 14:21:07,618 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 14:21:07,618 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 14:21:07,619 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 14:21:07,619 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 14:21:07,620 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 14:21:07,620 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 14:21:07,620 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 14:21:07,620 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 14:21:07,620 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 14:21:07,620 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 14:21:07,621 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 14:21:07,621 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 14:21:07,834 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 14:21:07,855 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 14:21:07,858 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 14:21:07,859 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 14:21:07,859 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 14:21:07,860 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-50.i
[2023-12-23 14:21:09,047 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 14:21:09,216 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 14:21:09,217 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-50.i
[2023-12-23 14:21:09,224 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8fc19fd/3b3fee3c22d746d3860ed1746a1f4493/FLAG7b642a5ce
[2023-12-23 14:21:09,236 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8fc19fd/3b3fee3c22d746d3860ed1746a1f4493
[2023-12-23 14:21:09,240 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 14:21:09,241 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 14:21:09,242 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 14:21:09,242 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 14:21:09,245 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 14:21:09,246 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,247 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b8a51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09, skipping insertion in model container
[2023-12-23 14:21:09,247 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,280 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 14:21:09,382 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-ps-ci_file-50.i[919,932]
[2023-12-23 14:21:09,456 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 14:21:09,467 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 14:21:09,486 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-ps-ci_file-50.i[919,932]
[2023-12-23 14:21:09,509 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 14:21:09,527 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 14:21:09,527 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09 WrapperNode
[2023-12-23 14:21:09,527 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 14:21:09,528 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 14:21:09,528 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 14:21:09,528 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 14:21:09,534 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,566 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,588 INFO  L138                Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178
[2023-12-23 14:21:09,588 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 14:21:09,588 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 14:21:09,588 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 14:21:09,589 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 14:21:09,608 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,608 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,611 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,629 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 14:21:09,629 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,629 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,646 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,649 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,651 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,652 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,655 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 14:21:09,656 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 14:21:09,656 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 14:21:09,656 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 14:21:09,656 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (1/1) ...
[2023-12-23 14:21:09,676 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 14:21:09,686 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 14:21:09,727 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 14:21:09,782 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 14:21:09,787 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 14:21:09,787 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 14:21:09,787 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 14:21:09,789 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 14:21:09,789 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 14:21:09,789 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 14:21:09,885 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 14:21:09,887 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 14:21:20,383 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 14:21:20,458 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 14:21:20,458 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 14:21:20,459 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:21:20 BoogieIcfgContainer
[2023-12-23 14:21:20,459 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 14:21:20,475 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 14:21:20,475 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 14:21:20,478 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 14:21:20,478 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:21:09" (1/3) ...
[2023-12-23 14:21:20,478 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@994f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:21:20, skipping insertion in model container
[2023-12-23 14:21:20,478 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:21:09" (2/3) ...
[2023-12-23 14:21:20,479 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@994f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:21:20, skipping insertion in model container
[2023-12-23 14:21:20,479 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:21:20" (3/3) ...
[2023-12-23 14:21:20,479 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-50.i
[2023-12-23 14:21:20,492 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 14:21:20,492 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 14:21:20,533 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 14:21:20,539 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;@53c6cd21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 14:21:20,539 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 14:21:20,543 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 73 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 47 states have internal predecessors, (67), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 14:21:20,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 14:21:20,560 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:21:20,560 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:20,561 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:21:20,567 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:21:20,567 INFO  L85        PathProgramCache]: Analyzing trace with hash 1633757492, now seen corresponding path program 1 times
[2023-12-23 14:21:20,578 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:21:20,578 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620381566]
[2023-12-23 14:21:20,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:21:20,579 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 14:21:20,579 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:21:20,594 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 14:21:20,595 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 14:21:21,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:21:21,209 INFO  L262         TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 14:21:21,216 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:21:21,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-12-23 14:21:21,256 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 14:21:21,257 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:21:21,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620381566]
[2023-12-23 14:21:21,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620381566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 14:21:21,257 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 14:21:21,257 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 14:21:21,259 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596069745]
[2023-12-23 14:21:21,259 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 14:21:21,262 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 14:21:21,263 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:21:21,281 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 14:21:21,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 14:21:21,283 INFO  L87              Difference]: Start difference. First operand  has 73 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 47 states have internal predecessors, (67), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-23 14:21:21,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:21:21,471 INFO  L93              Difference]: Finished difference Result 143 states and 252 transitions.
[2023-12-23 14:21:21,480 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 14:21:21,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156
[2023-12-23 14:21:21,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:21:21,487 INFO  L225             Difference]: With dead ends: 143
[2023-12-23 14:21:21,487 INFO  L226             Difference]: Without dead ends: 71
[2023-12-23 14:21:21,490 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 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 14:21:21,492 INFO  L413           NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 14:21:21,493 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 14:21:21,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2023-12-23 14:21:21,521 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71.
[2023-12-23 14:21:21,522 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 14:21:21,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 109 transitions.
[2023-12-23 14:21:21,524 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 109 transitions. Word has length 156
[2023-12-23 14:21:21,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:21:21,524 INFO  L495      AbstractCegarLoop]: Abstraction has 71 states and 109 transitions.
[2023-12-23 14:21:21,524 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-23 14:21:21,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 109 transitions.
[2023-12-23 14:21:21,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 14:21:21,527 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:21:21,527 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:21,550 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-23 14:21:21,744 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 14:21:21,745 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:21:21,747 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:21:21,747 INFO  L85        PathProgramCache]: Analyzing trace with hash 1016455160, now seen corresponding path program 1 times
[2023-12-23 14:21:21,748 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:21:21,748 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921480121]
[2023-12-23 14:21:21,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:21:21,749 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 14:21:21,749 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:21:21,753 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 14:21:21,757 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 14:21:22,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:21:22,278 INFO  L262         TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 14:21:22,283 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:21:23,340 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 23 proven. 69 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked.
[2023-12-23 14:21:23,341 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 14:21:23,883 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked.
[2023-12-23 14:21:23,884 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:21:23,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921480121]
[2023-12-23 14:21:23,884 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [921480121] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 14:21:23,884 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 14:21:23,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2023-12-23 14:21:23,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676335689]
[2023-12-23 14:21:23,884 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 14:21:23,886 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-23 14:21:23,886 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:21:23,887 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-23 14:21:23,887 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-23 14:21:23,887 INFO  L87              Difference]: Start difference. First operand 71 states and 109 transitions. Second operand  has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48)
[2023-12-23 14:21:24,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:21:24,809 INFO  L93              Difference]: Finished difference Result 148 states and 223 transitions.
[2023-12-23 14:21:24,812 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-23 14:21:24,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 156
[2023-12-23 14:21:24,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:21:24,814 INFO  L225             Difference]: With dead ends: 148
[2023-12-23 14:21:24,814 INFO  L226             Difference]: Without dead ends: 78
[2023-12-23 14:21:24,815 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2023-12-23 14:21:24,816 INFO  L413           NwaCegarLoop]: 76 mSDtfsCounter, 123 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-23 14:21:24,816 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 173 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-23 14:21:24,817 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2023-12-23 14:21:24,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75.
[2023-12-23 14:21:24,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 75 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 14:21:24,826 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions.
[2023-12-23 14:21:24,826 INFO  L78                 Accepts]: Start accepts. Automaton has 75 states and 111 transitions. Word has length 156
[2023-12-23 14:21:24,827 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:21:24,827 INFO  L495      AbstractCegarLoop]: Abstraction has 75 states and 111 transitions.
[2023-12-23 14:21:24,827 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48)
[2023-12-23 14:21:24,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 75 states and 111 transitions.
[2023-12-23 14:21:24,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 14:21:24,829 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:21:24,829 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:24,864 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 14:21:25,047 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 14:21:25,047 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:21:25,047 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:21:25,048 INFO  L85        PathProgramCache]: Analyzing trace with hash -672488582, now seen corresponding path program 1 times
[2023-12-23 14:21:25,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:21:25,048 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504923118]
[2023-12-23 14:21:25,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:21:25,049 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 14:21:25,050 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:21:25,060 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 14:21:25,061 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 14:21:25,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:21:25,605 INFO  L262         TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 14:21:25,609 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:21:25,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-23 14:21:25,830 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 14:21:25,830 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:21:25,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504923118]
[2023-12-23 14:21:25,831 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504923118] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 14:21:25,831 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 14:21:25,831 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-23 14:21:25,831 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796022694]
[2023-12-23 14:21:25,831 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 14:21:25,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 14:21:25,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:21:25,832 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 14:21:25,832 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 14:21:25,832 INFO  L87              Difference]: Start difference. First operand 75 states and 111 transitions. Second operand  has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 14:21:26,278 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:21:26,278 INFO  L93              Difference]: Finished difference Result 210 states and 313 transitions.
[2023-12-23 14:21:26,279 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 14:21:26,279 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156
[2023-12-23 14:21:26,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:21:26,281 INFO  L225             Difference]: With dead ends: 210
[2023-12-23 14:21:26,281 INFO  L226             Difference]: Without dead ends: 136
[2023-12-23 14:21:26,282 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 14:21:26,283 INFO  L413           NwaCegarLoop]: 189 mSDtfsCounter, 110 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 14:21:26,283 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 456 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 14:21:26,283 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2023-12-23 14:21:26,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75.
[2023-12-23 14:21:26,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 75 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 14:21:26,306 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions.
[2023-12-23 14:21:26,306 INFO  L78                 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 156
[2023-12-23 14:21:26,307 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:21:26,307 INFO  L495      AbstractCegarLoop]: Abstraction has 75 states and 110 transitions.
[2023-12-23 14:21:26,307 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 14:21:26,307 INFO  L276                IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions.
[2023-12-23 14:21:26,309 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 14:21:26,309 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:21:26,309 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:26,324 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 14:21:26,509 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 14:21:26,510 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:21:26,510 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:21:26,511 INFO  L85        PathProgramCache]: Analyzing trace with hash -615230280, now seen corresponding path program 1 times
[2023-12-23 14:21:26,511 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:21:26,511 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998507633]
[2023-12-23 14:21:26,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:21:26,511 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 14:21:26,512 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:21:26,520 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 14:21:26,521 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 14:21:27,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:21:27,059 INFO  L262         TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 27 conjunts are in the unsatisfiable core
[2023-12-23 14:21:27,064 INFO  L285         TraceCheckSpWp]: Computing forward predicates...