/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 FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-90.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 08:00:45,852 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 08:00:45,907 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 08:00:45,911 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 08:00:45,911 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 08:00:45,935 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 08:00:45,936 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 08:00:45,936 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 08:00:45,936 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 08:00:45,937 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 08:00:45,937 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 08:00:45,937 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 08:00:45,937 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 08:00:45,938 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 08:00:45,938 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 08:00:45,938 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 08:00:45,938 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 08:00:45,939 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 08:00:45,939 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 08:00:45,941 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 08:00:45,943 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 08:00:45,943 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 08:00:45,944 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 08:00:45,945 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 08:00:45,945 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 08:00:45,945 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 08:00:45,945 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 08:00:45,945 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 08:00:45,945 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:00:45,946 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 08:00:45,946 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 08:00:45,946 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 08:00:45,946 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 08:00:45,946 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 08:00:45,946 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 08:00:45,948 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 08:00:45,948 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 08:00:45,948 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 08:00:45,948 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 08:00:46,125 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 08:00:46,144 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 08:00:46,146 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 08:00:46,147 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 08:00:46,147 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 08:00:46,148 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-90.i
[2024-11-06 08:00:47,400 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 08:00:47,541 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 08:00:47,541 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-90.i
[2024-11-06 08:00:47,547 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e78c148/084ee3afc0f64f08ab0cafbeb58fa015/FLAG7791ffdcd
[2024-11-06 08:00:47,561 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e78c148/084ee3afc0f64f08ab0cafbeb58fa015
[2024-11-06 08:00:47,564 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 08:00:47,565 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 08:00:47,567 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 08:00:47,567 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 08:00:47,572 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 08:00:47,572 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,573 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a884068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47, skipping insertion in model container
[2024-11-06 08:00:47,573 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,595 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 08:00:47,719 WARN  L250   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_floatingpointinfluence_no-floats_file-90.i[916,929]
[2024-11-06 08:00:47,746 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:00:47,758 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 08:00:47,769 WARN  L250   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_floatingpointinfluence_no-floats_file-90.i[916,929]
[2024-11-06 08:00:47,784 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:00:47,797 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 08:00:47,798 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47 WrapperNode
[2024-11-06 08:00:47,798 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 08:00:47,799 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 08:00:47,799 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 08:00:47,799 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 08:00:47,804 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,810 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,830 INFO  L138                Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123
[2024-11-06 08:00:47,831 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 08:00:47,832 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 08:00:47,832 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 08:00:47,832 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 08:00:47,841 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,842 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,846 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,855 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 08:00:47,855 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,856 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,863 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,871 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,872 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,873 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,876 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 08:00:47,881 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 08:00:47,881 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 08:00:47,881 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 08:00:47,882 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (1/1) ...
[2024-11-06 08:00:47,891 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:00:47,899 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:47,912 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 08:00:47,915 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 08:00:47,934 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 08:00:47,934 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 08:00:47,934 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 08:00:47,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 08:00:47,934 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 08:00:47,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 08:00:48,004 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 08:00:48,008 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 08:00:48,194 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-06 08:00:48,194 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 08:00:48,202 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 08:00:48,202 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 08:00:48,203 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:48 BoogieIcfgContainer
[2024-11-06 08:00:48,203 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 08:00:48,204 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 08:00:48,204 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 08:00:48,207 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 08:00:48,207 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:00:47" (1/3) ...
[2024-11-06 08:00:48,208 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2cb847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:48, skipping insertion in model container
[2024-11-06 08:00:48,208 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:47" (2/3) ...
[2024-11-06 08:00:48,208 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2cb847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:48, skipping insertion in model container
[2024-11-06 08:00:48,208 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:48" (3/3) ...
[2024-11-06 08:00:48,209 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-90.i
[2024-11-06 08:00:48,224 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 08:00:48,224 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 08:00:48,276 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 08:00:48,281 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;@39a1889a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 08:00:48,281 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 08:00:48,284 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 57 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 35 states have internal predecessors, (46), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-06 08:00:48,292 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2024-11-06 08:00:48,293 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:48,293 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:00:48,293 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:48,297 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:48,297 INFO  L85        PathProgramCache]: Analyzing trace with hash 1039288057, now seen corresponding path program 1 times
[2024-11-06 08:00:48,308 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:48,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972502478]
[2024-11-06 08:00:48,308 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:48,309 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:48,309 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:48,311 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:00:48,313 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-06 08:00:48,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:48,459 INFO  L255         TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:48,471 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:48,513 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2024-11-06 08:00:48,514 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:00:48,514 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:48,514 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972502478]
[2024-11-06 08:00:48,515 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972502478] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:00:48,515 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:00:48,515 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 08:00:48,517 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248338606]
[2024-11-06 08:00:48,518 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:00:48,522 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 08:00:48,522 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:48,541 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 08:00:48,541 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:00:48,543 INFO  L87              Difference]: Start difference. First operand  has 57 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 35 states have internal predecessors, (46), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-06 08:00:48,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:48,569 INFO  L93              Difference]: Finished difference Result 107 states and 186 transitions.
[2024-11-06 08:00:48,570 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 08:00:48,571 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124
[2024-11-06 08:00:48,572 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:48,577 INFO  L225             Difference]: With dead ends: 107
[2024-11-06 08:00:48,578 INFO  L226             Difference]: Without dead ends: 53
[2024-11-06 08:00:48,581 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 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 08:00:48,584 INFO  L432           NwaCegarLoop]: 79 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, 79 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 08:00:48,585 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 08:00:48,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2024-11-06 08:00:48,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2024-11-06 08:00:48,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 53 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-06 08:00:48,623 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions.
[2024-11-06 08:00:48,625 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 124
[2024-11-06 08:00:48,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:48,626 INFO  L471      AbstractCegarLoop]: Abstraction has 53 states and 79 transitions.
[2024-11-06 08:00:48,626 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-06 08:00:48,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions.
[2024-11-06 08:00:48,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2024-11-06 08:00:48,628 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:48,628 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:00:48,642 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-06 08:00:48,829 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:48,830 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:48,830 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:48,830 INFO  L85        PathProgramCache]: Analyzing trace with hash 1080942329, now seen corresponding path program 1 times
[2024-11-06 08:00:48,831 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:48,831 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625496450]
[2024-11-06 08:00:48,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:48,832 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:48,832 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:48,833 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:00:48,855 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-06 08:00:48,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:48,944 INFO  L255         TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:48,951 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:49,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 303 proven. 18 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked.
[2024-11-06 08:00:49,291 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:00:49,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 135 proven. 27 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked.
[2024-11-06 08:00:49,626 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:49,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625496450]
[2024-11-06 08:00:49,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625496450] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 08:00:49,626 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 08:00:49,626 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19
[2024-11-06 08:00:49,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640266697]
[2024-11-06 08:00:49,627 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 08:00:49,628 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-11-06 08:00:49,629 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:49,631 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-11-06 08:00:49,631 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342
[2024-11-06 08:00:49,632 INFO  L87              Difference]: Start difference. First operand 53 states and 79 transitions. Second operand  has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25)
[2024-11-06 08:00:50,362 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:50,362 INFO  L93              Difference]: Finished difference Result 185 states and 257 transitions.
[2024-11-06 08:00:50,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. 
[2024-11-06 08:00:50,363 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 124
[2024-11-06 08:00:50,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:50,365 INFO  L225             Difference]: With dead ends: 185
[2024-11-06 08:00:50,365 INFO  L226             Difference]: Without dead ends: 135
[2024-11-06 08:00:50,367 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722
[2024-11-06 08:00:50,367 INFO  L432           NwaCegarLoop]: 52 mSDtfsCounter, 287 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-06 08:00:50,368 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 225 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-06 08:00:50,369 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-11-06 08:00:50,387 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 67.
[2024-11-06 08:00:50,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-06 08:00:50,390 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions.
[2024-11-06 08:00:50,390 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 124
[2024-11-06 08:00:50,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:50,393 INFO  L471      AbstractCegarLoop]: Abstraction has 67 states and 90 transitions.
[2024-11-06 08:00:50,393 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25)
[2024-11-06 08:00:50,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions.
[2024-11-06 08:00:50,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2024-11-06 08:00:50,395 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:50,395 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:00:50,416 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-06 08:00:50,596 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:50,600 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:50,601 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:50,601 INFO  L85        PathProgramCache]: Analyzing trace with hash 1082789371, now seen corresponding path program 1 times
[2024-11-06 08:00:50,602 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:50,602 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102195638]
[2024-11-06 08:00:50,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:50,602 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:50,602 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:50,604 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:00:50,605 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-06 08:00:50,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:50,677 INFO  L255         TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:50,681 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:50,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 468 proven. 54 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked.
[2024-11-06 08:00:50,891 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:00:51,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 57 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked.
[2024-11-06 08:00:51,109 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:51,109 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102195638]
[2024-11-06 08:00:51,109 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [102195638] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 08:00:51,109 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 08:00:51,109 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2024-11-06 08:00:51,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200315565]
[2024-11-06 08:00:51,109 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 08:00:51,110 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-06 08:00:51,110 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:51,111 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-06 08:00:51,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210
[2024-11-06 08:00:51,111 INFO  L87              Difference]: Start difference. First operand 67 states and 90 transitions. Second operand  has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32)
[2024-11-06 08:00:51,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:51,487 INFO  L93              Difference]: Finished difference Result 151 states and 194 transitions.
[2024-11-06 08:00:51,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2024-11-06 08:00:51,489 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 124
[2024-11-06 08:00:51,489 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:51,490 INFO  L225             Difference]: With dead ends: 151
[2024-11-06 08:00:51,490 INFO  L226             Difference]: Without dead ends: 87
[2024-11-06 08:00:51,491 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600
[2024-11-06 08:00:51,494 INFO  L432           NwaCegarLoop]: 47 mSDtfsCounter, 82 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-06 08:00:51,495 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 164 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-06 08:00:51,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2024-11-06 08:00:51,509 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79.
[2024-11-06 08:00:51,509 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-06 08:00:51,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions.
[2024-11-06 08:00:51,512 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 124
[2024-11-06 08:00:51,512 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:51,513 INFO  L471      AbstractCegarLoop]: Abstraction has 79 states and 98 transitions.
[2024-11-06 08:00:51,513 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32)
[2024-11-06 08:00:51,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions.
[2024-11-06 08:00:51,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2024-11-06 08:00:51,514 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:51,514 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:00:51,530 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-06 08:00:51,715 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:51,717 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:51,718 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:51,718 INFO  L85        PathProgramCache]: Analyzing trace with hash 1165326155, now seen corresponding path program 1 times
[2024-11-06 08:00:51,718 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:51,719 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499421326]
[2024-11-06 08:00:51,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:51,719 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:51,719 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:51,721 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:00:51,721 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-06 08:00:51,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:51,780 INFO  L255         TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:51,784 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:56,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked.
[2024-11-06 08:00:56,545 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:01:26,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2024-11-06 08:01:26,160 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:01:26,160 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499421326]
[2024-11-06 08:01:26,160 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499421326] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-06 08:01:26,160 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-06 08:01:26,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17
[2024-11-06 08:01:26,161 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278774201]
[2024-11-06 08:01:26,161 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:01:26,161 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-06 08:01:26,161 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:01:26,162 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-06 08:01:26,162 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2024-11-06 08:01:26,163 INFO  L87              Difference]: Start difference. First operand 79 states and 98 transitions. Second operand  has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2024-11-06 08:01:30,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:01:30,692 INFO  L93              Difference]: Finished difference Result 128 states and 153 transitions.
[2024-11-06 08:01:30,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-06 08:01:30,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125
[2024-11-06 08:01:30,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:01:30,694 INFO  L225             Difference]: With dead ends: 128
[2024-11-06 08:01:30,694 INFO  L226             Difference]: Without dead ends: 126
[2024-11-06 08:01:30,695 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420
[2024-11-06 08:01:30,695 INFO  L432           NwaCegarLoop]: 99 mSDtfsCounter, 110 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-06 08:01:30,696 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 394 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-06 08:01:30,696 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2024-11-06 08:01:30,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 86.
[2024-11-06 08:01:30,711 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-06 08:01:30,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions.
[2024-11-06 08:01:30,712 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 125
[2024-11-06 08:01:30,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:01:30,713 INFO  L471      AbstractCegarLoop]: Abstraction has 86 states and 104 transitions.
[2024-11-06 08:01:30,713 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2024-11-06 08:01:30,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions.
[2024-11-06 08:01:30,714 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2024-11-06 08:01:30,714 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:01:30,714 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:01:30,730 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-06 08:01:30,915 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:01:30,915 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:01:30,916 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:01:30,916 INFO  L85        PathProgramCache]: Analyzing trace with hash -611528249, now seen corresponding path program 1 times
[2024-11-06 08:01:30,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:01:30,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069404558]
[2024-11-06 08:01:30,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:01:30,917 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:01:30,917 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:01:30,918 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:01:30,919 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-06 08:01:30,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:01:30,984 INFO  L255         TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 08:01:30,988 INFO  L278         TraceCheckSpWp]: Computing forward predicates...