/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 23:14:37,607 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 23:14:37,680 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 23:14:37,687 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 23:14:37,687 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 23:14:37,717 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 23:14:37,717 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 23:14:37,717 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 23:14:37,718 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 23:14:37,722 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 23:14:37,722 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 23:14:37,723 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 23:14:37,723 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 23:14:37,724 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 23:14:37,724 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 23:14:37,725 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 23:14:37,725 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 23:14:37,725 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 23:14:37,725 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 23:14:37,725 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 23:14:37,726 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 23:14:37,726 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 23:14:37,726 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 23:14:37,726 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 23:14:37,726 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 23:14:37,726 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 23:14:37,727 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 23:14:37,727 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 23:14:37,727 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 23:14:37,727 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 23:14:37,728 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 23:14:37,728 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 23:14:37,728 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 23:14:37,728 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 23:14:37,728 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 23:14:37,728 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 23:14:37,729 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 23:14:37,730 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 23:14:37,730 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 23:14:37,730 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 23:14:37,730 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 23:14:37,906 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 23:14:37,937 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 23:14:37,940 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 23:14:37,941 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 23:14:37,941 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 23:14:37,943 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i
[2023-12-23 23:14:39,009 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 23:14:39,222 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 23:14:39,222 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i
[2023-12-23 23:14:39,233 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349f76b48/bae0b4589adb4cce9f716c0ab50f8a5c/FLAGb07dc9fb4
[2023-12-23 23:14:39,245 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349f76b48/bae0b4589adb4cce9f716c0ab50f8a5c
[2023-12-23 23:14:39,247 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 23:14:39,248 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 23:14:39,249 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 23:14:39,249 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 23:14:39,253 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 23:14:39,253 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,254 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66207440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39, skipping insertion in model container
[2023-12-23 23:14:39,254 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,285 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 23:14:39,380 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i[916,929]
[2023-12-23 23:14:39,429 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 23:14:39,440 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 23:14:39,448 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-61.i[916,929]
[2023-12-23 23:14:39,480 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 23:14:39,494 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 23:14:39,495 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39 WrapperNode
[2023-12-23 23:14:39,495 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 23:14:39,496 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 23:14:39,497 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 23:14:39,497 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 23:14:39,502 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,515 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,545 INFO  L138                Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192
[2023-12-23 23:14:39,546 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 23:14:39,546 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 23:14:39,546 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 23:14:39,546 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 23:14:39,554 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,554 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,557 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,570 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 23:14:39,571 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,571 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,579 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,582 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,584 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,586 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,589 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 23:14:39,590 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 23:14:39,590 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 23:14:39,590 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 23:14:39,590 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (1/1) ...
[2023-12-23 23:14:39,594 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 23:14:39,604 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 23:14:39,614 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 23:14:39,618 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 23:14:39,646 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 23:14:39,656 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 23:14:39,656 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 23:14:39,656 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 23:14:39,656 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 23:14:39,657 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 23:14:39,743 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 23:14:39,744 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 23:14:40,228 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 23:14:40,314 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 23:14:40,314 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 23:14:40,315 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:14:40 BoogieIcfgContainer
[2023-12-23 23:14:40,315 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 23:14:40,316 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 23:14:40,316 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 23:14:40,318 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 23:14:40,319 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:14:39" (1/3) ...
[2023-12-23 23:14:40,319 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fce73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:14:40, skipping insertion in model container
[2023-12-23 23:14:40,319 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:14:39" (2/3) ...
[2023-12-23 23:14:40,319 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fce73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:14:40, skipping insertion in model container
[2023-12-23 23:14:40,319 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:14:40" (3/3) ...
[2023-12-23 23:14:40,322 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-61.i
[2023-12-23 23:14:40,335 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 23:14:40,336 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 23:14:40,376 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 23:14:40,381 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;@6b839c9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 23:14:40,381 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 23:14:40,384 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 79 states, 50 states have (on average 1.52) internal successors, (76), 51 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 23:14:40,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2023-12-23 23:14:40,395 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 23:14:40,396 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 23:14:40,396 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 23:14:40,400 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 23:14:40,401 INFO  L85        PathProgramCache]: Analyzing trace with hash -1052114038, now seen corresponding path program 1 times
[2023-12-23 23:14:40,411 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 23:14:40,411 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512078560]
[2023-12-23 23:14:40,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 23:14:40,412 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 23:14:40,412 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 23:14:40,414 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 23:14:40,430 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 23:14:40,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 23:14:40,691 INFO  L262         TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 23:14:40,699 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 23:14:41,112 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 435 proven. 60 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked.
[2023-12-23 23:14:41,112 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 23:14:41,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2023-12-23 23:14:41,324 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 23:14:41,324 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512078560]
[2023-12-23 23:14:41,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512078560] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 23:14:41,325 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 23:14:41,325 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2023-12-23 23:14:41,326 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614107686]
[2023-12-23 23:14:41,327 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 23:14:41,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-23 23:14:41,330 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 23:14:41,347 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-23 23:14:41,348 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-12-23 23:14:41,349 INFO  L87              Difference]: Start difference. First operand  has 79 states, 50 states have (on average 1.52) internal successors, (76), 51 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47)
[2023-12-23 23:14:42,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 23:14:42,252 INFO  L93              Difference]: Finished difference Result 245 states and 448 transitions.
[2023-12-23 23:14:42,253 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-12-23 23:14:42,254 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 164
[2023-12-23 23:14:42,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 23:14:42,261 INFO  L225             Difference]: With dead ends: 245
[2023-12-23 23:14:42,262 INFO  L226             Difference]: Without dead ends: 167
[2023-12-23 23:14:42,265 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2023-12-23 23:14:42,267 INFO  L413           NwaCegarLoop]: 89 mSDtfsCounter, 229 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-23 23:14:42,268 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 288 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-23 23:14:42,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2023-12-23 23:14:42,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 86.
[2023-12-23 23:14:42,305 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 23:14:42,306 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 130 transitions.
[2023-12-23 23:14:42,307 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 130 transitions. Word has length 164
[2023-12-23 23:14:42,308 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 23:14:42,308 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 130 transitions.
[2023-12-23 23:14:42,308 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47)
[2023-12-23 23:14:42,308 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 130 transitions.
[2023-12-23 23:14:42,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2023-12-23 23:14:42,311 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 23:14:42,311 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 23:14:42,320 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 23:14:42,520 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 23:14:42,521 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 23:14:42,522 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 23:14:42,522 INFO  L85        PathProgramCache]: Analyzing trace with hash 1078379113, now seen corresponding path program 1 times
[2023-12-23 23:14:42,523 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 23:14:42,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698208891]
[2023-12-23 23:14:42,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 23:14:42,524 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 23:14:42,525 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 23:14:42,525 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 23:14:42,536 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 23:14:42,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 23:14:42,741 INFO  L262         TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-23 23:14:42,751 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 23:14:43,898 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 584 proven. 105 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked.
[2023-12-23 23:14:43,898 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 23:14:44,054 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 23:14:44,054 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698208891]
[2023-12-23 23:14:44,054 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698208891] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 23:14:44,054 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [447710603]
[2023-12-23 23:14:44,054 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 23:14:44,055 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 23:14:44,055 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 23:14:44,121 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 23:14:44,123 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2023-12-23 23:14:45,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 23:14:45,315 INFO  L262         TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-23 23:14:45,319 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 23:14:46,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 333 proven. 9 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked.
[2023-12-23 23:14:46,992 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 23:14:50,632 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [447710603] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 23:14:50,632 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 23:14:50,632 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16
[2023-12-23 23:14:50,633 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864123871]
[2023-12-23 23:14:50,633 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 23:14:50,634 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-12-23 23:14:50,634 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 23:14:50,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-12-23 23:14:50,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420
[2023-12-23 23:14:50,635 INFO  L87              Difference]: Start difference. First operand 86 states and 130 transitions. Second operand  has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52)
[2023-12-23 23:14:56,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 23:14:56,158 INFO  L93              Difference]: Finished difference Result 466 states and 685 transitions.
[2023-12-23 23:14:56,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2023-12-23 23:14:56,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 165
[2023-12-23 23:14:56,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 23:14:56,180 INFO  L225             Difference]: With dead ends: 466
[2023-12-23 23:14:56,180 INFO  L226             Difference]: Without dead ends: 381
[2023-12-23 23:14:56,181 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=543, Invalid=1907, Unknown=0, NotChecked=0, Total=2450
[2023-12-23 23:14:56,182 INFO  L413           NwaCegarLoop]: 112 mSDtfsCounter, 468 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-12-23 23:14:56,182 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1189 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-12-23 23:14:56,183 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 381 states.
[2023-12-23 23:14:56,226 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 251.
[2023-12-23 23:14:56,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251 states, 161 states have (on average 1.2919254658385093) internal successors, (208), 161 states have internal predecessors, (208), 78 states have call successors, (78), 11 states have call predecessors, (78), 11 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78)
[2023-12-23 23:14:56,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 364 transitions.
[2023-12-23 23:14:56,231 INFO  L78                 Accepts]: Start accepts. Automaton has 251 states and 364 transitions. Word has length 165
[2023-12-23 23:14:56,231 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 23:14:56,231 INFO  L495      AbstractCegarLoop]: Abstraction has 251 states and 364 transitions.
[2023-12-23 23:14:56,232 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52)
[2023-12-23 23:14:56,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 251 states and 364 transitions.
[2023-12-23 23:14:56,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2023-12-23 23:14:56,238 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 23:14:56,238 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 23:14:56,246 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2023-12-23 23:14:56,455 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 23:14:56,654 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 23:14:56,655 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 23:14:56,655 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 23:14:56,655 INFO  L85        PathProgramCache]: Analyzing trace with hash 68622468, now seen corresponding path program 1 times
[2023-12-23 23:14:56,656 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 23:14:56,656 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930441896]
[2023-12-23 23:14:56,656 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 23:14:56,656 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 23:14:56,656 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 23:14:56,658 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 23:14:56,661 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 23:14:56,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 23:14:56,866 INFO  L262         TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 23:14:56,869 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 23:14:57,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-23 23:14:57,119 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 23:14:57,119 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 23:14:57,119 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930441896]
[2023-12-23 23:14:57,119 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [930441896] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 23:14:57,119 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 23:14:57,119 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-23 23:14:57,119 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734031409]
[2023-12-23 23:14:57,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 23:14:57,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-23 23:14:57,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 23:14:57,120 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-23 23:14:57,121 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-23 23:14:57,121 INFO  L87              Difference]: Start difference. First operand 251 states and 364 transitions. Second operand  has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 23:14:57,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 23:14:57,720 INFO  L93              Difference]: Finished difference Result 390 states and 574 transitions.
[2023-12-23 23:14:57,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-23 23:14:57,739 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 166
[2023-12-23 23:14:57,740 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 23:14:57,741 INFO  L225             Difference]: With dead ends: 390
[2023-12-23 23:14:57,741 INFO  L226             Difference]: Without dead ends: 304
[2023-12-23 23:14:57,742 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-23 23:14:57,743 INFO  L413           NwaCegarLoop]: 116 mSDtfsCounter, 92 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-23 23:14:57,743 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 407 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-23 23:14:57,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 304 states.
[2023-12-23 23:14:57,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 252.
[2023-12-23 23:14:57,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 252 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 162 states have internal predecessors, (209), 78 states have call successors, (78), 11 states have call predecessors, (78), 11 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78)
[2023-12-23 23:14:57,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 365 transitions.
[2023-12-23 23:14:57,784 INFO  L78                 Accepts]: Start accepts. Automaton has 252 states and 365 transitions. Word has length 166
[2023-12-23 23:14:57,784 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 23:14:57,784 INFO  L495      AbstractCegarLoop]: Abstraction has 252 states and 365 transitions.
[2023-12-23 23:14:57,785 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 23:14:57,785 INFO  L276                IsEmpty]: Start isEmpty. Operand 252 states and 365 transitions.
[2023-12-23 23:14:57,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2023-12-23 23:14:57,786 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 23:14:57,786 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 23:14:57,796 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 23:14:57,994 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 23:14:57,994 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 23:14:57,995 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 23:14:57,995 INFO  L85        PathProgramCache]: Analyzing trace with hash -1519725434, now seen corresponding path program 1 times
[2023-12-23 23:14:57,995 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 23:14:57,996 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352601585]
[2023-12-23 23:14:57,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 23:14:57,996 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 23:14:57,996 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 23:14:57,997 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 23:14:57,998 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 23:14:58,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 23:14:58,255 INFO  L262         TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-12-23 23:14:58,260 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 23:15:09,603 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 490 proven. 237 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked.
[2023-12-23 23:15:09,604 INFO  L327         TraceCheckSpWp]: Computing backward predicates...