/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 05:31:34,095 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 05:31:34,168 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-01 05:31:34,173 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 05:31:34,174 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 05:31:34,215 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 05:31:34,215 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 05:31:34,216 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 05:31:34,216 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 05:31:34,217 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 05:31:34,218 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 05:31:34,218 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 05:31:34,219 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 05:31:34,224 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 05:31:34,224 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 05:31:34,224 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 05:31:34,225 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 05:31:34,225 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 05:31:34,225 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 05:31:34,225 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 05:31:34,225 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 05:31:34,226 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 05:31:34,226 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 05:31:34,226 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 05:31:34,226 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 05:31:34,227 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 05:31:34,227 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 05:31:34,227 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 05:31:34,227 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 05:31:34,228 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 05:31:34,228 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 05:31:34,228 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 05:31:34,229 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 05:31:34,229 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 05:31:34,229 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 05:31:34,231 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 05:31:34,232 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 05:31:34,232 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 05:31:34,232 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 05:31:34,232 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 05:31:34,233 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 05:31:34,233 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 05:31:34,234 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:31:34,503 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 05:31:34,523 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 05:31:34,530 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 05:31:34,531 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 05:31:34,535 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 05:31:34,536 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c
[2024-11-01 05:31:35,958 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 05:31:36,208 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 05:31:36,209 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c
[2024-11-01 05:31:36,225 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5c44081/be15f2b2a46343c49a3e8f302faa427e/FLAG0111b8071
[2024-11-01 05:31:36,239 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5c44081/be15f2b2a46343c49a3e8f302faa427e
[2024-11-01 05:31:36,241 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 05:31:36,242 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 05:31:36,243 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 05:31:36,243 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 05:31:36,247 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 05:31:36,247 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,248 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482aa772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36, skipping insertion in model container
[2024-11-01 05:31:36,248 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,291 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 05:31:36,429 WARN  L251   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.safe_intersymbol_analog_estimation_convergence.c[1311,1324]
[2024-11-01 05:31:36,567 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 05:31:36,578 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 05:31:36,589 WARN  L251   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.safe_intersymbol_analog_estimation_convergence.c[1311,1324]
[2024-11-01 05:31:36,699 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 05:31:36,715 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 05:31:36,715 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36 WrapperNode
[2024-11-01 05:31:36,715 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 05:31:36,716 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 05:31:36,716 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 05:31:36,716 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 05:31:36,722 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,754 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,816 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 656
[2024-11-01 05:31:36,816 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 05:31:36,817 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 05:31:36,817 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 05:31:36,817 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 05:31:36,838 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,838 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,848 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,884 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].
[2024-11-01 05:31:36,885 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,885 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,920 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,927 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,935 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,941 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,958 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 05:31:36,959 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 05:31:36,960 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 05:31:36,960 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 05:31:36,960 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (1/1) ...
[2024-11-01 05:31:36,977 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 05:31:36,993 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:31:37,010 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)
[2024-11-01 05:31:37,026 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
[2024-11-01 05:31:37,066 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 05:31:37,066 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 05:31:37,066 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-01 05:31:37,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-01 05:31:37,066 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 05:31:37,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 05:31:37,229 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 05:31:37,234 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 05:31:38,046 INFO  L?                        ?]: Removed 267 outVars from TransFormulas that were not future-live.
[2024-11-01 05:31:38,046 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 05:31:38,056 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 05:31:38,056 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 05:31:38,056 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:31:38 BoogieIcfgContainer
[2024-11-01 05:31:38,057 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 05:31:38,058 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 05:31:38,058 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 05:31:38,060 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 05:31:38,061 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 05:31:36" (1/3) ...
[2024-11-01 05:31:38,061 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d039938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:31:38, skipping insertion in model container
[2024-11-01 05:31:38,061 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:31:36" (2/3) ...
[2024-11-01 05:31:38,061 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d039938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:31:38, skipping insertion in model container
[2024-11-01 05:31:38,061 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:31:38" (3/3) ...
[2024-11-01 05:31:38,062 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c
[2024-11-01 05:31:38,073 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 05:31:38,074 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 05:31:38,116 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 05:31:38,120 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;@34aa4a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 05:31:38,121 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 05:31:38,123 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-01 05:31:38,128 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-01 05:31:38,128 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:31:38,129 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 05:31:38,130 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:31:38,133 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:31:38,134 INFO  L85        PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times
[2024-11-01 05:31:38,140 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:31:38,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671333875]
[2024-11-01 05:31:38,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:31:38,142 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:31:38,143 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:31:38,148 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)
[2024-11-01 05:31:38,149 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-01 05:31:38,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:31:38,429 INFO  L255         TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-01 05:31:38,438 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:31:38,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-01 05:31:38,714 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:31:39,109 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-01 05:31:39,110 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:31:39,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671333875]
[2024-11-01 05:31:39,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1671333875] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:31:39,110 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:31:39,111 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2024-11-01 05:31:39,112 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000216886]
[2024-11-01 05:31:39,112 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:31:39,115 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-01 05:31:39,116 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:31:39,132 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-01 05:31:39,132 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-01 05:31:39,134 INFO  L87              Difference]: Start difference. First operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-01 05:31:39,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:31:39,455 INFO  L93              Difference]: Finished difference Result 38 states and 53 transitions.
[2024-11-01 05:31:39,457 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-01 05:31:39,458 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17
[2024-11-01 05:31:39,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:31:39,462 INFO  L225             Difference]: With dead ends: 38
[2024-11-01 05:31:39,463 INFO  L226             Difference]: Without dead ends: 22
[2024-11-01 05:31:39,465 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2024-11-01 05:31:39,467 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-01 05:31:39,468 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-01 05:31:39,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-01 05:31:39,492 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2024-11-01 05:31:39,493 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-01 05:31:39,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions.
[2024-11-01 05:31:39,495 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17
[2024-11-01 05:31:39,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:31:39,496 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 24 transitions.
[2024-11-01 05:31:39,496 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-01 05:31:39,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions.
[2024-11-01 05:31:39,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-01 05:31:39,497 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:31:39,497 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-01 05:31:39,514 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-01 05:31:39,701 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
[2024-11-01 05:31:39,702 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:31:39,703 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:31:39,703 INFO  L85        PathProgramCache]: Analyzing trace with hash 91156387, now seen corresponding path program 1 times
[2024-11-01 05:31:39,703 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:31:39,703 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248760113]
[2024-11-01 05:31:39,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:31:39,704 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:31:39,704 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:31:39,706 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)
[2024-11-01 05:31:39,708 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-01 05:31:40,085 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:31:40,099 INFO  L255         TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-01 05:31:40,105 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:31:40,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-01 05:31:40,379 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:31:40,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-01 05:31:40,807 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:31:40,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248760113]
[2024-11-01 05:31:40,808 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [248760113] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:31:40,808 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:31:40,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-01 05:31:40,808 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073156391]
[2024-11-01 05:31:40,808 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:31:40,810 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-01 05:31:40,810 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:31:40,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-01 05:31:40,813 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-01 05:31:40,814 INFO  L87              Difference]: Start difference. First operand 21 states and 24 transitions. Second operand  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-01 05:31:43,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:31:43,379 INFO  L93              Difference]: Finished difference Result 45 states and 56 transitions.
[2024-11-01 05:31:43,379 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-01 05:31:43,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32
[2024-11-01 05:31:43,380 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:31:43,381 INFO  L225             Difference]: With dead ends: 45
[2024-11-01 05:31:43,381 INFO  L226             Difference]: Without dead ends: 43
[2024-11-01 05:31:43,382 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210
[2024-11-01 05:31:43,382 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2024-11-01 05:31:43,383 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2024-11-01 05:31:43,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-01 05:31:43,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42.
[2024-11-01 05:31:43,397 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-01 05:31:43,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-11-01 05:31:43,399 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 32
[2024-11-01 05:31:43,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:31:43,399 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-11-01 05:31:43,399 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-01 05:31:43,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-11-01 05:31:43,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-01 05:31:43,401 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:31:43,401 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1]
[2024-11-01 05:31:43,428 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-01 05:31:43,605 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
[2024-11-01 05:31:43,606 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:31:43,606 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:31:43,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 257648895, now seen corresponding path program 2 times
[2024-11-01 05:31:43,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:31:43,607 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628049559]
[2024-11-01 05:31:43,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:31:43,607 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:31:43,607 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:31:43,609 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)
[2024-11-01 05:31:43,611 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-01 05:31:44,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:31:44,338 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-01 05:31:44,347 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:31:45,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-01 05:31:45,448 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:31:47,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-01 05:31:47,566 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:31:47,566 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628049559]
[2024-11-01 05:31:47,566 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [628049559] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:31:47,566 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:31:47,566 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-01 05:31:47,567 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929197892]
[2024-11-01 05:31:47,567 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:31:47,570 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-01 05:31:47,570 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:31:47,571 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-01 05:31:47,571 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2024-11-01 05:31:47,571 INFO  L87              Difference]: Start difference. First operand 42 states and 51 transitions. Second operand  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-01 05:31:50,652 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:31:50,653 INFO  L93              Difference]: Finished difference Result 59 states and 73 transitions.
[2024-11-01 05:31:50,655 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-01 05:31:50,656 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 77
[2024-11-01 05:31:50,656 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:31:50,657 INFO  L225             Difference]: With dead ends: 59
[2024-11-01 05:31:50,657 INFO  L226             Difference]: Without dead ends: 57
[2024-11-01 05:31:50,658 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462
[2024-11-01 05:31:50,659 INFO  L432           NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2024-11-01 05:31:50,659 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2024-11-01 05:31:50,663 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-11-01 05:31:50,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56.
[2024-11-01 05:31:50,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-01 05:31:50,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions.
[2024-11-01 05:31:50,687 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 77
[2024-11-01 05:31:50,687 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:31:50,687 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 69 transitions.
[2024-11-01 05:31:50,688 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-01 05:31:50,688 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions.
[2024-11-01 05:31:50,691 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-11-01 05:31:50,691 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:31:50,692 INFO  L215           NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1]
[2024-11-01 05:31:50,731 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-01 05:31:50,895 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
[2024-11-01 05:31:50,896 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:31:50,896 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:31:50,896 INFO  L85        PathProgramCache]: Analyzing trace with hash -761811841, now seen corresponding path program 3 times
[2024-11-01 05:31:50,896 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:31:50,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626031540]
[2024-11-01 05:31:50,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:31:50,897 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:31:50,897 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:31:50,899 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)
[2024-11-01 05:31:50,900 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-01 05:31:53,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:31:53,984 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 702 conjuncts are in the unsatisfiable core
[2024-11-01 05:31:54,055 INFO  L278         TraceCheckSpWp]: Computing forward predicates...