/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-02 22:06:22,111 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-02 22:06:22,190 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-02 22:06:22,197 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-02 22:06:22,198 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-02 22:06:22,225 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-02 22:06:22,227 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-02 22:06:22,227 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-02 22:06:22,228 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-02 22:06:22,228 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-02 22:06:22,228 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-02 22:06:22,229 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-02 22:06:22,229 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-02 22:06:22,229 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-02 22:06:22,230 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-02 22:06:22,232 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-02 22:06:22,233 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-02 22:06:22,235 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-02 22:06:22,235 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-02 22:06:22,235 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-02 22:06:22,235 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-02 22:06:22,236 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-02 22:06:22,236 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-02 22:06:22,237 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-02 22:06:22,237 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-02 22:06:22,237 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-02 22:06:22,237 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-02 22:06:22,238 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-02 22:06:22,238 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-02 22:06:22,238 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-02 22:06:22,238 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-02 22:06:22,239 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-02 22:06:22,239 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-02 22:06:22,239 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-02 22:06:22,239 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:06:22,240 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-02 22:06:22,240 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-02 22:06:22,240 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-02 22:06:22,240 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-02 22:06:22,241 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-02 22:06:22,241 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-02 22:06:22,241 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-02 22:06:22,242 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-02 22:06:22,242 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-02 22:06:22,242 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:06:22,456 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-02 22:06:22,476 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-02 22:06:22,478 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-02 22:06:22,479 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-02 22:06:22,481 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-02 22:06:22,482 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i
[2024-11-02 22:06:23,907 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-02 22:06:24,092 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-02 22:06:24,092 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i
[2024-11-02 22:06:24,100 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bdbf47f/6449505a500845d39eeb11d307e8bf83/FLAG2f9cdc389
[2024-11-02 22:06:24,477 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bdbf47f/6449505a500845d39eeb11d307e8bf83
[2024-11-02 22:06:24,479 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-02 22:06:24,480 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-02 22:06:24,481 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-02 22:06:24,482 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-02 22:06:24,486 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-02 22:06:24,487 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,488 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cde520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24, skipping insertion in model container
[2024-11-02 22:06:24,488 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,512 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-02 22:06:24,670 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i[915,928]
[2024-11-02 22:06:24,702 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:06:24,715 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-02 22:06:24,725 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i[915,928]
[2024-11-02 22:06:24,753 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:06:24,776 INFO  L204         MainTranslator]: Completed translation
[2024-11-02 22:06:24,777 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24 WrapperNode
[2024-11-02 22:06:24,777 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-02 22:06:24,778 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-02 22:06:24,778 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-02 22:06:24,778 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-02 22:06:24,784 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,798 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,830 INFO  L138                Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102
[2024-11-02 22:06:24,830 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-02 22:06:24,831 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-02 22:06:24,835 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-02 22:06:24,835 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-02 22:06:24,845 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,845 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,848 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,861 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].
[2024-11-02 22:06:24,861 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,861 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,867 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,871 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,873 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,874 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,880 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-02 22:06:24,881 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-02 22:06:24,881 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-02 22:06:24,881 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-02 22:06:24,882 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (1/1) ...
[2024-11-02 22:06:24,887 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:06:24,897 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:06:24,914 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)
[2024-11-02 22:06:24,917 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
[2024-11-02 22:06:24,945 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-02 22:06:24,945 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-02 22:06:24,946 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-02 22:06:24,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-02 22:06:24,946 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-02 22:06:24,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-02 22:06:25,036 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-02 22:06:25,042 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-02 22:06:25,298 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-02 22:06:25,298 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-02 22:06:25,315 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-02 22:06:25,315 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-02 22:06:25,316 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:25 BoogieIcfgContainer
[2024-11-02 22:06:25,316 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-02 22:06:25,319 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-02 22:06:25,319 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-02 22:06:25,322 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-02 22:06:25,323 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:06:24" (1/3) ...
[2024-11-02 22:06:25,323 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a297082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:25, skipping insertion in model container
[2024-11-02 22:06:25,324 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:24" (2/3) ...
[2024-11-02 22:06:25,324 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a297082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:25, skipping insertion in model container
[2024-11-02 22:06:25,324 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:25" (3/3) ...
[2024-11-02 22:06:25,325 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-42.i
[2024-11-02 22:06:25,342 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-02 22:06:25,342 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-02 22:06:25,410 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 22:06:25,415 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;@1101c49f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 22:06:25,416 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-02 22:06:25,419 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 48 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-02 22:06:25,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-02 22:06:25,441 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:06:25,442 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:06:25,442 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:06:25,446 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:06:25,447 INFO  L85        PathProgramCache]: Analyzing trace with hash 350031807, now seen corresponding path program 1 times
[2024-11-02 22:06:25,452 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:06:25,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975248880]
[2024-11-02 22:06:25,453 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:06:25,454 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:06:25,454 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:06:25,456 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)
[2024-11-02 22:06:25,457 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-02 22:06:25,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:06:25,601 INFO  L255         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-02 22:06:25,612 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:06:25,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2024-11-02 22:06:25,656 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:06:25,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2024-11-02 22:06:25,749 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:06:25,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975248880]
[2024-11-02 22:06:25,754 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1975248880] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 22:06:25,754 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 22:06:25,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-02 22:06:25,756 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408505354]
[2024-11-02 22:06:25,757 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 22:06:25,763 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-02 22:06:25,763 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:06:25,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-02 22:06:25,781 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 22:06:25,782 INFO  L87              Difference]: Start difference. First operand  has 48 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15)
[2024-11-02 22:06:25,805 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:06:25,805 INFO  L93              Difference]: Finished difference Result 89 states and 147 transitions.
[2024-11-02 22:06:25,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-02 22:06:25,808 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97
[2024-11-02 22:06:25,808 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:06:25,814 INFO  L225             Difference]: With dead ends: 89
[2024-11-02 22:06:25,814 INFO  L226             Difference]: Without dead ends: 44
[2024-11-02 22:06:25,817 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 22:06:25,820 INFO  L432           NwaCegarLoop]: 62 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, 62 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
[2024-11-02 22:06:25,823 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 22:06:25,835 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-02 22:06:25,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2024-11-02 22:06:25,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-02 22:06:25,853 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions.
[2024-11-02 22:06:25,854 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 97
[2024-11-02 22:06:25,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:06:25,855 INFO  L471      AbstractCegarLoop]: Abstraction has 44 states and 62 transitions.
[2024-11-02 22:06:25,855 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15)
[2024-11-02 22:06:25,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions.
[2024-11-02 22:06:25,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-02 22:06:25,858 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:06:25,859 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:06:25,874 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-02 22:06:26,059 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
[2024-11-02 22:06:26,060 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:06:26,061 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:06:26,061 INFO  L85        PathProgramCache]: Analyzing trace with hash 1682017665, now seen corresponding path program 1 times
[2024-11-02 22:06:26,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:06:26,062 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674087668]
[2024-11-02 22:06:26,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:06:26,062 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:06:26,062 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:06:26,065 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)
[2024-11-02 22:06:26,066 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-02 22:06:26,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:06:26,159 INFO  L255         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-02 22:06:26,168 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:06:26,552 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 72 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2024-11-02 22:06:26,552 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:06:45,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-02 22:06:45,905 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:06:45,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674087668]
[2024-11-02 22:06:45,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1674087668] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 22:06:45,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 22:06:45,905 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15
[2024-11-02 22:06:45,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121134821]
[2024-11-02 22:06:45,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 22:06:45,907 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 22:06:45,907 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:06:45,908 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 22:06:45,908 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2024-11-02 22:06:45,908 INFO  L87              Difference]: Start difference. First operand 44 states and 62 transitions. Second operand  has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-02 22:06:46,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:06:46,090 INFO  L93              Difference]: Finished difference Result 116 states and 167 transitions.
[2024-11-02 22:06:46,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-02 22:06:46,091 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 97
[2024-11-02 22:06:46,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:06:46,093 INFO  L225             Difference]: With dead ends: 116
[2024-11-02 22:06:46,093 INFO  L226             Difference]: Without dead ends: 75
[2024-11-02 22:06:46,093 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2024-11-02 22:06:46,096 INFO  L432           NwaCegarLoop]: 102 mSDtfsCounter, 56 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-02 22:06:46,096 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 408 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-02 22:06:46,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2024-11-02 22:06:46,110 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 44.
[2024-11-02 22:06:46,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-02 22:06:46,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions.
[2024-11-02 22:06:46,114 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 97
[2024-11-02 22:06:46,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:06:46,115 INFO  L471      AbstractCegarLoop]: Abstraction has 44 states and 61 transitions.
[2024-11-02 22:06:46,115 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-02 22:06:46,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions.
[2024-11-02 22:06:46,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-02 22:06:46,120 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:06:46,120 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:06:46,138 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-02 22:06:46,321 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
[2024-11-02 22:06:46,321 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:06:46,322 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:06:46,322 INFO  L85        PathProgramCache]: Analyzing trace with hash -837942269, now seen corresponding path program 1 times
[2024-11-02 22:06:46,322 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:06:46,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595633814]
[2024-11-02 22:06:46,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:06:46,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:06:46,323 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:06:46,325 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)
[2024-11-02 22:06:46,326 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-02 22:06:46,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:06:46,404 INFO  L255         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-11-02 22:06:46,409 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:07:11,922 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 72 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2024-11-02 22:07:11,922 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:07:39,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-02 22:07:39,809 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:07:39,810 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595633814]
[2024-11-02 22:07:39,810 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [595633814] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 22:07:39,810 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 22:07:39,810 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21
[2024-11-02 22:07:39,810 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25230138]
[2024-11-02 22:07:39,810 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 22:07:39,811 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-02 22:07:39,811 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:07:39,812 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-02 22:07:39,814 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420
[2024-11-02 22:07:39,815 INFO  L87              Difference]: Start difference. First operand 44 states and 61 transitions. Second operand  has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-02 22:07:40,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:07:40,019 INFO  L93              Difference]: Finished difference Result 67 states and 86 transitions.
[2024-11-02 22:07:40,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-02 22:07:40,019 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 97
[2024-11-02 22:07:40,020 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:07:40,021 INFO  L225             Difference]: With dead ends: 67
[2024-11-02 22:07:40,022 INFO  L226             Difference]: Without dead ends: 65
[2024-11-02 22:07:40,022 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552
[2024-11-02 22:07:40,023 INFO  L432           NwaCegarLoop]: 54 mSDtfsCounter, 52 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-02 22:07:40,024 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 266 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-02 22:07:40,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-02 22:07:40,030 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51.
[2024-11-02 22:07:40,030 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-02 22:07:40,031 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions.
[2024-11-02 22:07:40,031 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 97
[2024-11-02 22:07:40,032 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:07:40,032 INFO  L471      AbstractCegarLoop]: Abstraction has 51 states and 69 transitions.
[2024-11-02 22:07:40,032 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-02 22:07:40,032 INFO  L276                IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions.
[2024-11-02 22:07:40,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-02 22:07:40,034 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:07:40,034 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:07:40,055 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-02 22:07:40,238 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
[2024-11-02 22:07:40,239 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:07:40,240 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:07:40,240 INFO  L85        PathProgramCache]: Analyzing trace with hash -157883899, now seen corresponding path program 1 times
[2024-11-02 22:07:40,240 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:07:40,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516143892]
[2024-11-02 22:07:40,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:07:40,241 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:07:40,241 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:07:40,243 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)
[2024-11-02 22:07:40,244 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-02 22:07:40,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:07:40,317 INFO  L255         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-02 22:07:40,320 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:07:40,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-02 22:07:40,451 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:07:40,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-02 22:07:40,532 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:07:40,532 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516143892]
[2024-11-02 22:07:40,532 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [516143892] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 22:07:40,532 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 22:07:40,532 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6
[2024-11-02 22:07:40,533 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252121011]
[2024-11-02 22:07:40,533 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 22:07:40,533 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-02 22:07:40,533 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:07:40,537 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-02 22:07:40,538 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-02 22:07:40,538 INFO  L87              Difference]: Start difference. First operand 51 states and 69 transitions. Second operand  has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)
[2024-11-02 22:07:40,698 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:07:40,698 INFO  L93              Difference]: Finished difference Result 140 states and 192 transitions.
[2024-11-02 22:07:40,699 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-02 22:07:40,699 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 97
[2024-11-02 22:07:40,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:07:40,701 INFO  L225             Difference]: With dead ends: 140
[2024-11-02 22:07:40,701 INFO  L226             Difference]: Without dead ends: 92
[2024-11-02 22:07:40,702 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2024-11-02 22:07:40,703 INFO  L432           NwaCegarLoop]: 57 mSDtfsCounter, 86 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-02 22:07:40,703 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 104 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-02 22:07:40,704 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-02 22:07:40,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 47.
[2024-11-02 22:07:40,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-02 22:07:40,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions.
[2024-11-02 22:07:40,713 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 97
[2024-11-02 22:07:40,713 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:07:40,713 INFO  L471      AbstractCegarLoop]: Abstraction has 47 states and 63 transitions.
[2024-11-02 22:07:40,714 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)
[2024-11-02 22:07:40,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions.
[2024-11-02 22:07:40,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2024-11-02 22:07:40,715 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:07:40,715 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:07:40,734 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-02 22:07:40,919 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:07:40,920 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:07:40,921 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:07:40,921 INFO  L85        PathProgramCache]: Analyzing trace with hash -441966872, now seen corresponding path program 1 times
[2024-11-02 22:07:40,921 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:07:40,921 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655602169]
[2024-11-02 22:07:40,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:07:40,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:07:40,921 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:07:40,923 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:07:40,924 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-02 22:07:40,984 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:07:40,985 INFO  L255         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-11-02 22:07:40,989 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:07:49,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 223 proven. 63 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked.
[2024-11-02 22:07:49,940 INFO  L311         TraceCheckSpWp]: Computing backward predicates...