/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy WOLF -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 06:26:46,643 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 06:26:46,726 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-06 06:26:46,734 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 06:26:46,735 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 06:26:46,769 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 06:26:46,770 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 06:26:46,770 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 06:26:46,771 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 06:26:46,771 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 06:26:46,772 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 06:26:46,772 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 06:26:46,773 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 06:26:46,773 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 06:26:46,773 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 06:26:46,774 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 06:26:46,777 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 06:26:46,779 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 06:26:46,780 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 06:26:46,780 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 06:26:46,780 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 06:26:46,780 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 06:26:46,781 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 06:26:46,781 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 06:26:46,781 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 06:26:46,781 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 06:26:46,782 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 06:26:46,784 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 06:26:46,784 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 06:26:46,784 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 06:26:46,785 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 06:26:46,785 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 06:26:46,785 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 06:26:46,785 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 06:26:46,785 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 06:26:46,786 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 06:26:46,786 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-06 06:26:46,786 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 06:26:46,786 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 06:26:46,787 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 06:26:46,787 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 06:26:46,790 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> WOLF
[2024-11-06 06:26:47,072 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 06:26:47,105 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 06:26:47,109 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 06:26:47,110 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 06:26:47,111 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 06:26:47,112 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c
[2024-11-06 06:26:48,763 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 06:26:49,048 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 06:26:49,049 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c
[2024-11-06 06:26:49,061 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ae7ef46/b5baf5f7a08544d5a81ff31f378d349a/FLAG5a126fceb
[2024-11-06 06:26:49,084 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ae7ef46/b5baf5f7a08544d5a81ff31f378d349a
[2024-11-06 06:26:49,088 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 06:26:49,090 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 06:26:49,092 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 06:26:49,092 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 06:26:49,100 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 06:26:49,101 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,102 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e58c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49, skipping insertion in model container
[2024-11-06 06:26:49,102 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,151 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 06:26:49,345 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c[1278,1291]
[2024-11-06 06:26:49,549 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 06:26:49,573 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 06:26:49,586 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c[1278,1291]
[2024-11-06 06:26:49,694 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 06:26:49,710 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 06:26:49,711 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49 WrapperNode
[2024-11-06 06:26:49,712 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 06:26:49,713 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 06:26:49,717 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 06:26:49,717 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 06:26:49,723 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,741 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,801 INFO  L138                Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 639
[2024-11-06 06:26:49,801 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 06:26:49,802 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 06:26:49,802 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 06:26:49,802 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 06:26:49,819 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,819 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,831 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,852 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].
[2024-11-06 06:26:49,852 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,852 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,872 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,881 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,884 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,888 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,908 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 06:26:49,909 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 06:26:49,909 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 06:26:49,909 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 06:26:49,910 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (1/1) ...
[2024-11-06 06:26:49,915 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 06:26:49,926 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 06:26:49,944 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)
[2024-11-06 06:26:49,948 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
[2024-11-06 06:26:49,975 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 06:26:49,975 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 06:26:49,975 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 06:26:49,975 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 06:26:49,976 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 06:26:49,977 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 06:26:50,199 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 06:26:50,202 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 06:26:50,716 INFO  L?                        ?]: Removed 198 outVars from TransFormulas that were not future-live.
[2024-11-06 06:26:50,717 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 06:26:50,735 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 06:26:50,735 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 06:26:50,736 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:26:50 BoogieIcfgContainer
[2024-11-06 06:26:50,736 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 06:26:50,738 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 06:26:50,738 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 06:26:50,743 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 06:26:50,743 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:26:49" (1/3) ...
[2024-11-06 06:26:50,744 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b958f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:26:50, skipping insertion in model container
[2024-11-06 06:26:50,744 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:26:49" (2/3) ...
[2024-11-06 06:26:50,744 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b958f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:26:50, skipping insertion in model container
[2024-11-06 06:26:50,744 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:26:50" (3/3) ...
[2024-11-06 06:26:50,748 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c
[2024-11-06 06:26:50,764 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 06:26:50,765 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 06:26:50,819 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 06:26:50,825 INFO  L333      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, 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;@190bda24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 06:26:50,826 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 06:26:50,835 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-06 06:26:50,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-06 06:26:50,843 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:26:50,843 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:26:50,844 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:26:50,849 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:26:50,850 INFO  L85        PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times
[2024-11-06 06:26:50,863 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:26:50,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542626183]
[2024-11-06 06:26:50,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:26:50,864 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
[2024-11-06 06:26:50,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:26:50,868 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)
[2024-11-06 06:26:50,870 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
[2024-11-06 06:26:51,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:26:51,168 INFO  L255         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 06:26:51,177 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:26:51,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-06 06:26:51,201 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 06:26:51,202 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:26:51,203 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542626183]
[2024-11-06 06:26:51,204 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [542626183] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 06:26:51,205 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 06:26:51,205 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 06:26:51,207 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962905041]
[2024-11-06 06:26:51,208 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 06:26:51,212 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 06:26:51,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:26:51,238 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 06:26:51,239 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 06:26:51,241 INFO  L87              Difference]: Start difference. First operand  has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-06 06:26:51,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:26:51,258 INFO  L93              Difference]: Finished difference Result 35 states and 47 transitions.
[2024-11-06 06:26:51,259 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 06:26:51,260 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2024-11-06 06:26:51,261 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:26:51,267 INFO  L225             Difference]: With dead ends: 35
[2024-11-06 06:26:51,267 INFO  L226             Difference]: Without dead ends: 17
[2024-11-06 06:26:51,271 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 06:26:51,275 INFO  L432           NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 06:26:51,277 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 06:26:51,293 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-11-06 06:26:51,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2024-11-06 06:26:51,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-06 06:26:51,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2024-11-06 06:26:51,313 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23
[2024-11-06 06:26:51,314 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:26:51,314 INFO  L471      AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2024-11-06 06:26:51,316 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-06 06:26:51,316 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2024-11-06 06:26:51,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-06 06:26:51,318 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:26:51,318 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:26:51,327 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2024-11-06 06:26:51,523 WARN  L453      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
[2024-11-06 06:26:51,523 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:26:51,524 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:26:51,524 INFO  L85        PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times
[2024-11-06 06:26:51,525 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:26:51,525 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862066267]
[2024-11-06 06:26:51,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:26:51,526 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
[2024-11-06 06:26:51,526 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:26:51,529 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)
[2024-11-06 06:26:51,531 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
[2024-11-06 06:26:51,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:26:51,852 INFO  L255         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 06:26:51,865 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:26:52,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-06 06:26:52,029 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 06:26:52,030 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:26:52,030 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862066267]
[2024-11-06 06:26:52,030 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862066267] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 06:26:52,030 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 06:26:52,030 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-06 06:26:52,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032431575]
[2024-11-06 06:26:52,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 06:26:52,032 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-06 06:26:52,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:26:52,034 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-06 06:26:52,034 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 06:26:52,034 INFO  L87              Difference]: Start difference. First operand 17 states and 19 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-06 06:26:52,118 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:26:52,118 INFO  L93              Difference]: Finished difference Result 27 states and 32 transitions.
[2024-11-06 06:26:52,119 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-06 06:26:52,119 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2024-11-06 06:26:52,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:26:52,120 INFO  L225             Difference]: With dead ends: 27
[2024-11-06 06:26:52,120 INFO  L226             Difference]: Without dead ends: 25
[2024-11-06 06:26:52,120 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 06:26:52,121 INFO  L432           NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-06 06:26:52,122 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-06 06:26:52,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-06 06:26:52,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2024-11-06 06:26:52,131 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 06:26:52,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions.
[2024-11-06 06:26:52,133 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23
[2024-11-06 06:26:52,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:26:52,135 INFO  L471      AbstractCegarLoop]: Abstraction has 25 states and 30 transitions.
[2024-11-06 06:26:52,135 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-06 06:26:52,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions.
[2024-11-06 06:26:52,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-06 06:26:52,136 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:26:52,137 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:26:52,143 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
[2024-11-06 06:26:52,341 WARN  L453      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
[2024-11-06 06:26:52,342 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:26:52,343 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:26:52,343 INFO  L85        PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times
[2024-11-06 06:26:52,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:26:52,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56574452]
[2024-11-06 06:26:52,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:26:52,344 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
[2024-11-06 06:26:52,345 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:26:52,346 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)
[2024-11-06 06:26:52,348 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
[2024-11-06 06:26:52,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:26:52,908 INFO  L255         TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-06 06:26:52,917 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:26:53,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 06:26:53,373 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:26:53,513 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:26:53,513 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56574452]
[2024-11-06 06:26:53,514 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [56574452] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 06:26:53,514 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1647287101]
[2024-11-06 06:26:53,514 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:26:53,514 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-06 06:26:53,514 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-06 06:26:53,527 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-06 06:26:53,529 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-06 06:26:54,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:26:54,190 INFO  L255         TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-06 06:26:54,203 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:26:54,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 06:26:54,524 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:26:54,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1647287101] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 06:26:54,626 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 06:26:54,626 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2024-11-06 06:26:54,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127131205]
[2024-11-06 06:26:54,627 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 06:26:54,627 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-06 06:26:54,627 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:26:54,628 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-06 06:26:54,628 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2024-11-06 06:26:54,628 INFO  L87              Difference]: Start difference. First operand 25 states and 30 transitions. Second operand  has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2024-11-06 06:26:54,917 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:26:54,918 INFO  L93              Difference]: Finished difference Result 36 states and 44 transitions.
[2024-11-06 06:26:54,918 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-06 06:26:54,918 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44
[2024-11-06 06:26:54,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:26:54,919 INFO  L225             Difference]: With dead ends: 36
[2024-11-06 06:26:54,919 INFO  L226             Difference]: Without dead ends: 34
[2024-11-06 06:26:54,920 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210
[2024-11-06 06:26:54,921 INFO  L432           NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-06 06:26:54,921 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-06 06:26:54,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2024-11-06 06:26:54,926 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2024-11-06 06:26:54,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-06 06:26:54,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions.
[2024-11-06 06:26:54,928 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44
[2024-11-06 06:26:54,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:26:54,928 INFO  L471      AbstractCegarLoop]: Abstraction has 34 states and 42 transitions.
[2024-11-06 06:26:54,929 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6)
[2024-11-06 06:26:54,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions.
[2024-11-06 06:26:54,930 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2024-11-06 06:26:54,930 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:26:54,930 INFO  L215           NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1]
[2024-11-06 06:26:54,939 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0
[2024-11-06 06:26:55,143 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-11-06 06:26:55,335 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-06 06:26:55,335 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:26:55,336 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:26:55,336 INFO  L85        PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times
[2024-11-06 06:26:55,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:26:55,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695337069]
[2024-11-06 06:26:55,337 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-06 06:26:55,337 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
[2024-11-06 06:26:55,338 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:26:55,343 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)
[2024-11-06 06:26:55,353 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
[2024-11-06 06:26:56,206 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-06 06:26:56,206 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-06 06:26:56,228 INFO  L255         TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 100 conjuncts are in the unsatisfiable core
[2024-11-06 06:26:56,258 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:27:24,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2024-11-06 06:27:24,498 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:28:18,881 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:28:18,882 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695337069]
[2024-11-06 06:28:18,882 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695337069] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 06:28:18,882 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [554625215]
[2024-11-06 06:28:18,882 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-06 06:28:18,883 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-06 06:28:18,883 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-06 06:28:18,889 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-06 06:28:18,903 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-11-06 06:28:19,865 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-06 06:28:19,866 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-06 06:28:19,912 INFO  L255         TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 87 conjuncts are in the unsatisfiable core
[2024-11-06 06:28:19,928 INFO  L278         TraceCheckSpWp]: Computing forward predicates...