/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 08:08:06,899 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 08:08:07,020 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 08:08:07,027 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 08:08:07,028 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 08:08:07,065 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 08:08:07,065 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 08:08:07,066 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 08:08:07,068 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 08:08:07,069 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 08:08:07,069 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 08:08:07,070 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 08:08:07,070 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 08:08:07,071 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 08:08:07,072 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 08:08:07,073 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 08:08:07,074 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 08:08:07,074 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 08:08:07,075 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 08:08:07,075 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 08:08:07,075 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 08:08:07,079 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 08:08:07,079 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 08:08:07,079 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 08:08:07,080 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 08:08:07,080 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 08:08:07,080 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 08:08:07,081 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 08:08:07,081 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 08:08:07,081 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 08:08:07,081 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 08:08:07,082 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 08:08:07,082 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 08:08:07,082 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 08:08:07,083 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 08:08:07,083 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 08:08:07,083 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 08:08:07,083 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 08:08:07,084 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 08:08:07,084 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 08:08:07,084 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 08:08:07,086 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 08:08:07,086 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:07,454 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 08:08:07,482 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 08:08:07,484 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 08:08:07,486 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 08:08:07,486 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 08:08:07,488 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c
[2024-11-01 08:08:09,107 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 08:08:09,562 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 08:08:09,563 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c
[2024-11-01 08:08:09,596 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d780834a/628b05af804e41d8960cf98e5a7f2316/FLAG4ec296e5b
[2024-11-01 08:08:09,690 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d780834a/628b05af804e41d8960cf98e5a7f2316
[2024-11-01 08:08:09,693 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 08:08:09,694 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 08:08:09,696 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 08:08:09,696 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 08:08:09,703 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 08:08:09,704 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:08:09" (1/1) ...
[2024-11-01 08:08:09,705 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3794bce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:09, skipping insertion in model container
[2024-11-01 08:08:09,705 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:08:09" (1/1) ...
[2024-11-01 08:08:09,801 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 08:08:10,067 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.arbitrated_top_n4_w8_d32_e0.c[1270,1283]
[2024-11-01 08:08:10,688 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 08:08:10,700 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 08:08:10,713 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.arbitrated_top_n4_w8_d32_e0.c[1270,1283]
[2024-11-01 08:08:10,989 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 08:08:11,008 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 08:08:11,009 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11 WrapperNode
[2024-11-01 08:08:11,009 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 08:08:11,012 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 08:08:11,012 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 08:08:11,012 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 08:08:11,023 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,113 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,337 INFO  L138                Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4924
[2024-11-01 08:08:11,338 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 08:08:11,339 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 08:08:11,339 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 08:08:11,339 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 08:08:11,350 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,351 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,398 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,465 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 08:08:11,465 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,466 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,590 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,607 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,634 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,657 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,696 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 08:08:11,698 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 08:08:11,698 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 08:08:11,698 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 08:08:11,700 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (1/1) ...
[2024-11-01 08:08:11,705 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 08:08:11,717 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 08:08:11,734 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 08:08:11,738 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 08:08:11,767 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 08:08:11,768 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 08:08:11,768 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-01 08:08:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-01 08:08:11,768 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 08:08:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 08:08:12,450 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 08:08:12,453 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 08:08:16,727 INFO  L?                        ?]: Removed 1434 outVars from TransFormulas that were not future-live.
[2024-11-01 08:08:16,727 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 08:08:16,740 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 08:08:16,740 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 08:08:16,740 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:08:16 BoogieIcfgContainer
[2024-11-01 08:08:16,741 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 08:08:16,742 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 08:08:16,742 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 08:08:16,746 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 08:08:16,746 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:08:09" (1/3) ...
[2024-11-01 08:08:16,747 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335a9fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:08:16, skipping insertion in model container
[2024-11-01 08:08:16,747 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:11" (2/3) ...
[2024-11-01 08:08:16,747 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335a9fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:08:16, skipping insertion in model container
[2024-11-01 08:08:16,748 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:08:16" (3/3) ...
[2024-11-01 08:08:16,750 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w8_d32_e0.c
[2024-11-01 08:08:16,766 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 08:08:16,767 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 08:08:16,830 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 08:08:16,837 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;@5e538891, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 08:08:16,838 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 08:08:16,842 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-01 08:08:16,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2024-11-01 08:08:16,853 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:16,854 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 08:08:16,855 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:16,859 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:16,859 INFO  L85        PathProgramCache]: Analyzing trace with hash 1644883339, now seen corresponding path program 1 times
[2024-11-01 08:08:16,867 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:16,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035691795]
[2024-11-01 08:08:16,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:16,870 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:16,870 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:16,871 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:16,873 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-01 08:08:18,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:08:18,896 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-01 08:08:18,915 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:08:18,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-01 08:08:18,946 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 08:08:19,020 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-01 08:08:19,021 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 08:08:19,021 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035691795]
[2024-11-01 08:08:19,022 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1035691795] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 08:08:19,022 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 08:08:19,022 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-01 08:08:19,024 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950290881]
[2024-11-01 08:08:19,024 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 08:08:19,028 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-01 08:08:19,028 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 08:08:19,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-01 08:08:19,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-01 08:08:19,050 INFO  L87              Difference]: Start difference. First operand  has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-01 08:08:19,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 08:08:19,075 INFO  L93              Difference]: Finished difference Result 75 states and 117 transitions.
[2024-11-01 08:08:19,076 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-01 08:08:19,077 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 83
[2024-11-01 08:08:19,077 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 08:08:19,085 INFO  L225             Difference]: With dead ends: 75
[2024-11-01 08:08:19,085 INFO  L226             Difference]: Without dead ends: 37
[2024-11-01 08:08:19,088 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-01 08:08:19,092 INFO  L432           NwaCegarLoop]: 49 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, 49 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
[2024-11-01 08:08:19,093 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-01 08:08:19,109 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-01 08:08:19,132 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2024-11-01 08:08:19,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-01 08:08:19,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions.
[2024-11-01 08:08:19,138 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 83
[2024-11-01 08:08:19,138 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 08:08:19,138 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 49 transitions.
[2024-11-01 08:08:19,138 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-01 08:08:19,139 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions.
[2024-11-01 08:08:19,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2024-11-01 08:08:19,144 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:19,144 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 08:08:19,177 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-01 08:08:19,345 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:19,346 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:19,346 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:19,346 INFO  L85        PathProgramCache]: Analyzing trace with hash -1385434447, now seen corresponding path program 1 times
[2024-11-01 08:08:19,347 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:19,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918707430]
[2024-11-01 08:08:19,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:19,347 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:19,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:19,348 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:19,349 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-01 08:08:21,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:08:21,677 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-01 08:08:21,698 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:08:22,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-01 08:08:22,030 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 08:08:22,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-01 08:08:22,779 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 08:08:22,779 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918707430]
[2024-11-01 08:08:22,779 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [918707430] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 08:08:22,780 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 08:08:22,780 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 08:08:22,780 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886045237]
[2024-11-01 08:08:22,780 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 08:08:22,781 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 08:08:22,782 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 08:08:22,782 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 08:08:22,783 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 08:08:22,783 INFO  L87              Difference]: Start difference. First operand 37 states and 49 transitions. Second operand  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-01 08:08:23,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 08:08:23,732 INFO  L93              Difference]: Finished difference Result 67 states and 92 transitions.
[2024-11-01 08:08:23,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-01 08:08:23,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 83
[2024-11-01 08:08:23,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 08:08:23,735 INFO  L225             Difference]: With dead ends: 67
[2024-11-01 08:08:23,735 INFO  L226             Difference]: Without dead ends: 65
[2024-11-01 08:08:23,735 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 08:08:23,736 INFO  L432           NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-01 08:08:23,737 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-01 08:08:23,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-01 08:08:23,750 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2024-11-01 08:08:23,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-01 08:08:23,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions.
[2024-11-01 08:08:23,755 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 83
[2024-11-01 08:08:23,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 08:08:23,756 INFO  L471      AbstractCegarLoop]: Abstraction has 65 states and 90 transitions.
[2024-11-01 08:08:23,756 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-01 08:08:23,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions.
[2024-11-01 08:08:23,759 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-01 08:08:23,759 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:23,760 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-01 08:08:23,789 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-01 08:08:23,960 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:23,961 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:23,962 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:23,962 INFO  L85        PathProgramCache]: Analyzing trace with hash -2082684701, now seen corresponding path program 1 times
[2024-11-01 08:08:23,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:23,962 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856564036]
[2024-11-01 08:08:23,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:23,963 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:23,963 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:23,967 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:23,968 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-01 08:08:28,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:08:28,343 INFO  L255         TraceCheckSpWp]: Trace formula consists of 3409 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-01 08:08:28,379 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:08:29,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2024-11-01 08:08:29,326 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 08:08:34,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2024-11-01 08:08:34,257 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 08:08:34,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856564036]
[2024-11-01 08:08:34,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [856564036] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 08:08:34,258 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 08:08:34,258 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2024-11-01 08:08:34,258 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706722639]
[2024-11-01 08:08:34,259 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 08:08:34,260 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-01 08:08:34,260 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 08:08:34,261 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-01 08:08:34,261 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210
[2024-11-01 08:08:34,262 INFO  L87              Difference]: Start difference. First operand 65 states and 90 transitions. Second operand  has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52)
[2024-11-01 08:08:36,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 08:08:36,012 INFO  L93              Difference]: Finished difference Result 96 states and 134 transitions.
[2024-11-01 08:08:36,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-01 08:08:36,012 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) Word has length 164
[2024-11-01 08:08:36,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 08:08:36,015 INFO  L225             Difference]: With dead ends: 96
[2024-11-01 08:08:36,015 INFO  L226             Difference]: Without dead ends: 94
[2024-11-01 08:08:36,016 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342
[2024-11-01 08:08:36,017 INFO  L432           NwaCegarLoop]: 32 mSDtfsCounter, 16 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-01 08:08:36,018 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 165 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-01 08:08:36,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2024-11-01 08:08:36,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2024-11-01 08:08:36,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39)
[2024-11-01 08:08:36,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions.
[2024-11-01 08:08:36,035 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 164
[2024-11-01 08:08:36,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 08:08:36,036 INFO  L471      AbstractCegarLoop]: Abstraction has 94 states and 132 transitions.
[2024-11-01 08:08:36,036 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52)
[2024-11-01 08:08:36,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions.
[2024-11-01 08:08:36,040 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2024-11-01 08:08:36,040 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:36,040 INFO  L215           NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1]
[2024-11-01 08:08:36,088 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-01 08:08:36,241 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:36,241 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:36,242 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:36,242 INFO  L85        PathProgramCache]: Analyzing trace with hash -1116181263, now seen corresponding path program 2 times
[2024-11-01 08:08:36,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:36,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57217419]
[2024-11-01 08:08:36,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:36,243 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:36,243 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:36,244 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:36,245 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-01 08:08:42,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:08:42,681 INFO  L255         TraceCheckSpWp]: Trace formula consists of 5077 conjuncts, 156 conjuncts are in the unsatisfiable core
[2024-11-01 08:08:42,735 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:09:05,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 3049 backedges. 315 proven. 280 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked.
[2024-11-01 08:09:05,744 INFO  L311         TraceCheckSpWp]: Computing backward predicates...