/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-15 17:20:03,948 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-12-15 17:20:04,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-15 17:20:04,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-12-15 17:20:04,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-15 17:20:04,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-15 17:20:04,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-15 17:20:04,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-15 17:20:04,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-15 17:20:04,058 INFO L153 SettingsManager]: * Use memory slicer=true
[2023-12-15 17:20:04,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-15 17:20:04,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-15 17:20:04,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-15 17:20:04,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-12-15 17:20:04,061 INFO L153 SettingsManager]: * Use SBE=true
[2023-12-15 17:20:04,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-15 17:20:04,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-12-15 17:20:04,061 INFO L153 SettingsManager]: * sizeof long=4
[2023-12-15 17:20:04,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-12-15 17:20:04,061 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-12-15 17:20:04,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-12-15 17:20:04,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-12-15 17:20:04,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-15 17:20:04,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-12-15 17:20:04,062 INFO L153 SettingsManager]: * Allow undefined functions=false
[2023-12-15 17:20:04,062 INFO L153 SettingsManager]: * sizeof long double=12
[2023-12-15 17:20:04,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-12-15 17:20:04,063 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-12-15 17:20:04,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-15 17:20:04,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-12-15 17:20:04,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-12-15 17:20:04,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-12-15 17:20:04,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-15 17:20:04,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-15 17:20:04,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-12-15 17:20:04,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-15 17:20:04,066 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-15 17:20:04,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-15 17:20:04,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-15 17:20:04,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-15 17:20:04,278 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-12-15 17:20:04,278 INFO L274 PluginConnector]: CDTParser initialized
[2023-12-15 17:20:04,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c
[2023-12-15 17:20:05,410 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-12-15 17:20:05,557 INFO L384 CDTParser]: Found 1 translation units.
[2023-12-15 17:20:05,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c
[2023-12-15 17:20:05,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fc5383d/fb51383b530f45639456d420ca6b99b2/FLAGaf58a8da5
[2023-12-15 17:20:05,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fc5383d/fb51383b530f45639456d420ca6b99b2
[2023-12-15 17:20:05,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-15 17:20:05,574 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-15 17:20:05,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-15 17:20:05,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-15 17:20:05,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-15 17:20:05,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500c55ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05, skipping insertion in model container
[2023-12-15 17:20:05,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,601 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-12-15 17:20:05,703 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c[408,421]
[2023-12-15 17:20:05,714 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-15 17:20:05,720 INFO L202 MainTranslator]: Completed pre-run
[2023-12-15 17:20:05,729 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c[408,421]
[2023-12-15 17:20:05,734 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-12-15 17:20:05,744 INFO L206 MainTranslator]: Completed translation
[2023-12-15 17:20:05,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05 WrapperNode
[2023-12-15 17:20:05,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-15 17:20:05,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-15 17:20:05,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-15 17:20:05,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-15 17:20:05,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,770 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58
[2023-12-15 17:20:05,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-15 17:20:05,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-15 17:20:05,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-15 17:20:05,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-12-15 17:20:05,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,803 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 0, 2].
[2023-12-15 17:20:05,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-15 17:20:05,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-15 17:20:05,815 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-12-15 17:20:05,815 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-12-15 17:20:05,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (1/1) ...
[2023-12-15 17:20:05,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-15 17:20:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:05,865 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)
[2023-12-15 17:20:05,882 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
[2023-12-15 17:20:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-15 17:20:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-15 17:20:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-15 17:20:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-15 17:20:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2023-12-15 17:20:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2023-12-15 17:20:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-12-15 17:20:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2023-12-15 17:20:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2023-12-15 17:20:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2023-12-15 17:20:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-15 17:20:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-15 17:20:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2023-12-15 17:20:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2023-12-15 17:20:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2023-12-15 17:20:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-12-15 17:20:05,975 INFO L241 CfgBuilder]: Building ICFG
[2023-12-15 17:20:05,978 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-15 17:20:06,083 INFO L282 CfgBuilder]: Performing block encoding
[2023-12-15 17:20:06,101 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-15 17:20:06,102 INFO L309 CfgBuilder]: Removed 2 assume(true) statements.
[2023-12-15 17:20:06,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:06 BoogieIcfgContainer
[2023-12-15 17:20:06,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-15 17:20:06,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-15 17:20:06,104 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-12-15 17:20:06,106 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-12-15 17:20:06,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:20:05" (1/3) ...
[2023-12-15 17:20:06,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e763dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:20:06, skipping insertion in model container
[2023-12-15 17:20:06,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:05" (2/3) ...
[2023-12-15 17:20:06,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e763dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:20:06, skipping insertion in model container
[2023-12-15 17:20:06,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:06" (3/3) ...
[2023-12-15 17:20:06,111 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c
[2023-12-15 17:20:06,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-15 17:20:06,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-15 17:20:06,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-15 17:20:06,172 INFO L357 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, mHoare=true, 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;@2dd7baa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-15 17:20:06,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-15 17:20:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-12-15 17:20:06,187 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:06,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:06,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:06,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 465532944, now seen corresponding path program 1 times
[2023-12-15 17:20:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:06,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201690396]
[2023-12-15 17:20:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:06,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:06,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201690396]
[2023-12-15 17:20:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201690396] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-15 17:20:06,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-15 17:20:06,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-15 17:20:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109664484]
[2023-12-15 17:20:06,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-15 17:20:06,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-15 17:20:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-15 17:20:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-15 17:20:06,393 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:06,425 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions.
[2023-12-15 17:20:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-12-15 17:20:06,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17
[2023-12-15 17:20:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:06,431 INFO L225 Difference]: With dead ends: 32
[2023-12-15 17:20:06,431 INFO L226 Difference]: Without dead ends: 15
[2023-12-15 17:20:06,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-15 17:20:06,436 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:06,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:20:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2023-12-15 17:20:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2023-12-15 17:20:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2023-12-15 17:20:06,461 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 17
[2023-12-15 17:20:06,462 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:06,462 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2023-12-15 17:20:06,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2023-12-15 17:20:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-12-15 17:20:06,464 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:06,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-15 17:20:06,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:06,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash 134474064, now seen corresponding path program 1 times
[2023-12-15 17:20:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410960528]
[2023-12-15 17:20:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:06,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:06,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410960528]
[2023-12-15 17:20:06,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410960528] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-15 17:20:06,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-15 17:20:06,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-15 17:20:06,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606235619]
[2023-12-15 17:20:06,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-15 17:20:06,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-15 17:20:06,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-15 17:20:06,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-15 17:20:06,624 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:06,656 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions.
[2023-12-15 17:20:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-12-15 17:20:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2023-12-15 17:20:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:06,658 INFO L225 Difference]: With dead ends: 28
[2023-12-15 17:20:06,659 INFO L226 Difference]: Without dead ends: 21
[2023-12-15 17:20:06,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-15 17:20:06,660 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:06,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:20:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2023-12-15 17:20:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16.
[2023-12-15 17:20:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions.
[2023-12-15 17:20:06,667 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 17
[2023-12-15 17:20:06,668 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:06,669 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions.
[2023-12-15 17:20:06,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions.
[2023-12-15 17:20:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2023-12-15 17:20:06,670 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:06,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-15 17:20:06,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:06,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1125781931, now seen corresponding path program 1 times
[2023-12-15 17:20:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772661969]
[2023-12-15 17:20:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:06,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:07,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772661969]
[2023-12-15 17:20:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772661969] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628611250]
[2023-12-15 17:20:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:07,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:07,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:07,030 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)
[2023-12-15 17:20:07,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-15 17:20:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-15 17:20:07,091 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:07,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:07,220 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:07,283 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size
[2023-12-15 17:20:07,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 36
[2023-12-15 17:20:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628611250] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:07,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12
[2023-12-15 17:20:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771937645]
[2023-12-15 17:20:07,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-15 17:20:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-15 17:20:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2023-12-15 17:20:07,313 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:07,381 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions.
[2023-12-15 17:20:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-15 17:20:07,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2023-12-15 17:20:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:07,382 INFO L225 Difference]: With dead ends: 21
[2023-12-15 17:20:07,382 INFO L226 Difference]: Without dead ends: 19
[2023-12-15 17:20:07,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182
[2023-12-15 17:20:07,384 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:07,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 61 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:20:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2023-12-15 17:20:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2023-12-15 17:20:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions.
[2023-12-15 17:20:07,391 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 18
[2023-12-15 17:20:07,391 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:07,391 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions.
[2023-12-15 17:20:07,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions.
[2023-12-15 17:20:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2023-12-15 17:20:07,392 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:07,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:07,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:07,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:07,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1224889556, now seen corresponding path program 1 times
[2023-12-15 17:20:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396362846]
[2023-12-15 17:20:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-15 17:20:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396362846]
[2023-12-15 17:20:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396362846] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:07,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710564127]
[2023-12-15 17:20:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:07,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:07,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:07,764 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)
[2023-12-15 17:20:07,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-15 17:20:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:07,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-15 17:20:07,817 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-15 17:20:07,852 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-15 17:20:07,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710564127] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:07,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:07,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2023-12-15 17:20:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931252544]
[2023-12-15 17:20:07,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:07,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-15 17:20:07,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-15 17:20:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2023-12-15 17:20:07,899 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:07,962 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions.
[2023-12-15 17:20:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-12-15 17:20:07,963 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21
[2023-12-15 17:20:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:07,964 INFO L225 Difference]: With dead ends: 33
[2023-12-15 17:20:07,964 INFO L226 Difference]: Without dead ends: 25
[2023-12-15 17:20:07,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2023-12-15 17:20:07,966 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:07,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:20:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2023-12-15 17:20:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19.
[2023-12-15 17:20:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2023-12-15 17:20:07,975 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 21
[2023-12-15 17:20:07,976 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:07,976 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2023-12-15 17:20:07,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2023-12-15 17:20:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2023-12-15 17:20:07,977 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:07,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:07,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:08,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2023-12-15 17:20:08,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:08,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1346228729, now seen corresponding path program 2 times
[2023-12-15 17:20:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672292494]
[2023-12-15 17:20:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672292494]
[2023-12-15 17:20:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672292494] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643849466]
[2023-12-15 17:20:08,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-12-15 17:20:08,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:08,512 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)
[2023-12-15 17:20:08,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-15 17:20:08,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-12-15 17:20:08,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:08,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjunts are in the unsatisfiable core
[2023-12-15 17:20:08,560 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:08,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:08,820 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:08,894 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size
[2023-12-15 17:20:08,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 38
[2023-12-15 17:20:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643849466] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:08,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 22
[2023-12-15 17:20:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547957022]
[2023-12-15 17:20:08,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:08,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-12-15 17:20:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-12-15 17:20:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462
[2023-12-15 17:20:08,953 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:09,183 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions.
[2023-12-15 17:20:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-12-15 17:20:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22
[2023-12-15 17:20:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:09,184 INFO L225 Difference]: With dead ends: 25
[2023-12-15 17:20:09,184 INFO L226 Difference]: Without dead ends: 23
[2023-12-15 17:20:09,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870
[2023-12-15 17:20:09,185 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:09,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 74 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:20:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2023-12-15 17:20:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2023-12-15 17:20:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2023-12-15 17:20:09,189 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 22
[2023-12-15 17:20:09,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:09,189 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2023-12-15 17:20:09,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 21 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2023-12-15 17:20:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2023-12-15 17:20:09,190 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:09,190 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:09,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-15 17:20:09,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:09,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:09,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash 909762896, now seen corresponding path program 3 times
[2023-12-15 17:20:09,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:09,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022256199]
[2023-12-15 17:20:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:09,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:09,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022256199]
[2023-12-15 17:20:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022256199] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516508165]
[2023-12-15 17:20:09,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-15 17:20:09,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:09,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:09,774 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)
[2023-12-15 17:20:09,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-15 17:20:09,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2023-12-15 17:20:09,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:09,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-12-15 17:20:09,840 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:09,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:10,109 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:10,217 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size
[2023-12-15 17:20:10,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 38
[2023-12-15 17:20:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516508165] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:10,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:10,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 28
[2023-12-15 17:20:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598804368]
[2023-12-15 17:20:10,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:10,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-12-15 17:20:10,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-12-15 17:20:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756
[2023-12-15 17:20:10,287 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:10,956 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions.
[2023-12-15 17:20:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2023-12-15 17:20:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25
[2023-12-15 17:20:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:10,956 INFO L225 Difference]: With dead ends: 57
[2023-12-15 17:20:10,956 INFO L226 Difference]: Without dead ends: 55
[2023-12-15 17:20:10,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=536, Invalid=2326, Unknown=0, NotChecked=0, Total=2862
[2023-12-15 17:20:10,958 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 100 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:10,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 145 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-15 17:20:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2023-12-15 17:20:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28.
[2023-12-15 17:20:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2023-12-15 17:20:10,964 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 25
[2023-12-15 17:20:10,964 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:10,964 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2023-12-15 17:20:10,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2023-12-15 17:20:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2023-12-15 17:20:10,965 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:10,965 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:10,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:11,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:11,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1905423184, now seen corresponding path program 4 times
[2023-12-15 17:20:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326353693]
[2023-12-15 17:20:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:11,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326353693]
[2023-12-15 17:20:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326353693] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441251906]
[2023-12-15 17:20:11,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-12-15 17:20:11,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:11,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:11,493 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)
[2023-12-15 17:20:11,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-15 17:20:11,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-12-15 17:20:11,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:11,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-12-15 17:20:11,561 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:11,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 37
[2023-12-15 17:20:11,643 INFO L349 Elim1Store]: treesize reduction 142, result has 13.4 percent of original size
[2023-12-15 17:20:11,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 89
[2023-12-15 17:20:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:12,021 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:12,256 INFO L349 Elim1Store]: treesize reduction 69, result has 16.9 percent of original size
[2023-12-15 17:20:12,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 59
[2023-12-15 17:20:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:12,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441251906] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:12,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:12,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 27
[2023-12-15 17:20:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096953928]
[2023-12-15 17:20:12,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:12,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2023-12-15 17:20:12,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2023-12-15 17:20:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702
[2023-12-15 17:20:12,274 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:12,975 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions.
[2023-12-15 17:20:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2023-12-15 17:20:12,976 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27
[2023-12-15 17:20:12,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:12,976 INFO L225 Difference]: With dead ends: 60
[2023-12-15 17:20:12,976 INFO L226 Difference]: Without dead ends: 58
[2023-12-15 17:20:12,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=360, Invalid=1992, Unknown=0, NotChecked=0, Total=2352
[2023-12-15 17:20:12,978 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:12,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 195 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-15 17:20:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2023-12-15 17:20:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 25.
[2023-12-15 17:20:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2023-12-15 17:20:12,983 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 27
[2023-12-15 17:20:12,983 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:12,983 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2023-12-15 17:20:12,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2023-12-15 17:20:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2023-12-15 17:20:12,984 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:12,984 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:12,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:13,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:13,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:13,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1508015463, now seen corresponding path program 5 times
[2023-12-15 17:20:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:13,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031219731]
[2023-12-15 17:20:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:13,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:13,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031219731]
[2023-12-15 17:20:13,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031219731] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664124154]
[2023-12-15 17:20:13,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-12-15 17:20:13,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:13,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:13,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-15 17:20:13,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2023-12-15 17:20:13,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:13,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core
[2023-12-15 17:20:13,600 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:13,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41
[2023-12-15 17:20:13,711 INFO L349 Elim1Store]: treesize reduction 145, result has 14.2 percent of original size
[2023-12-15 17:20:13,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 87
[2023-12-15 17:20:14,351 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:14,351 INFO L173 IndexEqualityManager]: detected equality via solver
[2023-12-15 17:20:14,352 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:14,353 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:14,353 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:14,354 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:14,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:14,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 74
[2023-12-15 17:20:14,361 INFO L173 IndexEqualityManager]: detected equality via solver
[2023-12-15 17:20:14,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:14,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 20
[2023-12-15 17:20:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:14,379 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:14,667 INFO L349 Elim1Store]: treesize reduction 20, result has 75.9 percent of original size
[2023-12-15 17:20:14,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 108
[2023-12-15 17:20:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:14,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664124154] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:14,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:14,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 12] total 33
[2023-12-15 17:20:14,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761244864]
[2023-12-15 17:20:14,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2023-12-15 17:20:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2023-12-15 17:20:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056
[2023-12-15 17:20:14,756 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 32 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2023-12-15 17:20:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:16,694 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions.
[2023-12-15 17:20:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2023-12-15 17:20:16,694 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 32 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28
[2023-12-15 17:20:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:16,695 INFO L225 Difference]: With dead ends: 65
[2023-12-15 17:20:16,695 INFO L226 Difference]: Without dead ends: 46
[2023-12-15 17:20:16,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=724, Invalid=3436, Unknown=0, NotChecked=0, Total=4160
[2023-12-15 17:20:16,697 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:16,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 177 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-15 17:20:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2023-12-15 17:20:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32.
[2023-12-15 17:20:16,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions.
[2023-12-15 17:20:16,706 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 28
[2023-12-15 17:20:16,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:16,707 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions.
[2023-12-15 17:20:16,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 32 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2023-12-15 17:20:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions.
[2023-12-15 17:20:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2023-12-15 17:20:16,707 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:16,707 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:16,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:16,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:16,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:16,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1756895628, now seen corresponding path program 6 times
[2023-12-15 17:20:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:16,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430881746]
[2023-12-15 17:20:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:16,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:17,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:17,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430881746]
[2023-12-15 17:20:17,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430881746] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:17,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380268130]
[2023-12-15 17:20:17,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2023-12-15 17:20:17,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:17,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:17,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:17,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-15 17:20:17,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2023-12-15 17:20:17,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:17,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-12-15 17:20:17,412 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:17,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:17,579 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:17,580 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:17,581 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:17,581 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:17,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:17,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 77
[2023-12-15 17:20:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:18,518 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:18,734 INFO L349 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size
[2023-12-15 17:20:18,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 66
[2023-12-15 17:20:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:18,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380268130] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:18,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:18,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 37
[2023-12-15 17:20:18,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244020294]
[2023-12-15 17:20:18,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:18,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2023-12-15 17:20:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2023-12-15 17:20:18,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332
[2023-12-15 17:20:18,939 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:20,197 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions.
[2023-12-15 17:20:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2023-12-15 17:20:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31
[2023-12-15 17:20:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:20,198 INFO L225 Difference]: With dead ends: 70
[2023-12-15 17:20:20,198 INFO L226 Difference]: Without dead ends: 68
[2023-12-15 17:20:20,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=594, Invalid=3828, Unknown=0, NotChecked=0, Total=4422
[2023-12-15 17:20:20,200 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:20,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 376 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-15 17:20:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2023-12-15 17:20:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 29.
[2023-12-15 17:20:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2023-12-15 17:20:20,211 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 31
[2023-12-15 17:20:20,211 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:20,211 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2023-12-15 17:20:20,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2023-12-15 17:20:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-12-15 17:20:20,213 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:20,213 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:20,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-12-15 17:20:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:20,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:20,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1381876491, now seen corresponding path program 7 times
[2023-12-15 17:20:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232511767]
[2023-12-15 17:20:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:20,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232511767]
[2023-12-15 17:20:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232511767] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867256457]
[2023-12-15 17:20:20,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2023-12-15 17:20:20,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:20,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:20,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-15 17:20:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:20,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-12-15 17:20:20,936 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:21,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 37
[2023-12-15 17:20:21,051 INFO L349 Elim1Store]: treesize reduction 54, result has 28.9 percent of original size
[2023-12-15 17:20:21,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 79
[2023-12-15 17:20:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:21,428 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:21,675 INFO L349 Elim1Store]: treesize reduction 40, result has 34.4 percent of original size
[2023-12-15 17:20:21,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 67
[2023-12-15 17:20:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:21,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867256457] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:21,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 37
[2023-12-15 17:20:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021974961]
[2023-12-15 17:20:21,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:21,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states
[2023-12-15 17:20:21,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2023-12-15 17:20:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332
[2023-12-15 17:20:21,755 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 36 states have internal predecessors, (67), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:23,467 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions.
[2023-12-15 17:20:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2023-12-15 17:20:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 36 states have internal predecessors, (67), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32
[2023-12-15 17:20:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:23,468 INFO L225 Difference]: With dead ends: 78
[2023-12-15 17:20:23,468 INFO L226 Difference]: Without dead ends: 76
[2023-12-15 17:20:23,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=902, Invalid=5104, Unknown=0, NotChecked=0, Total=6006
[2023-12-15 17:20:23,470 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 213 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:23,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 161 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-15 17:20:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2023-12-15 17:20:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 37.
[2023-12-15 17:20:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions.
[2023-12-15 17:20:23,487 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 32
[2023-12-15 17:20:23,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:23,488 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions.
[2023-12-15 17:20:23,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 36 states have internal predecessors, (67), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions.
[2023-12-15 17:20:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-12-15 17:20:23,491 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:23,491 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:23,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-15 17:20:23,695 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:23,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash 226229708, now seen corresponding path program 8 times
[2023-12-15 17:20:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:23,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089196127]
[2023-12-15 17:20:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089196127]
[2023-12-15 17:20:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089196127] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751060546]
[2023-12-15 17:20:24,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-12-15 17:20:24,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:24,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:24,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:24,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-15 17:20:24,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-12-15 17:20:24,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:24,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 46 conjunts are in the unsatisfiable core
[2023-12-15 17:20:24,243 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:24,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:24,342 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:24,343 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:24,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:24,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67
[2023-12-15 17:20:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:24,393 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:24,394 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:24,395 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:24,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:24,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 103
[2023-12-15 17:20:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:24,994 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:25,290 INFO L349 Elim1Store]: treesize reduction 106, result has 17.8 percent of original size
[2023-12-15 17:20:25,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 119 treesize of output 81
[2023-12-15 17:20:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751060546] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:25,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:25,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 14] total 40
[2023-12-15 17:20:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954980338]
[2023-12-15 17:20:25,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:25,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states
[2023-12-15 17:20:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2023-12-15 17:20:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560
[2023-12-15 17:20:25,348 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 states have internal predecessors, (76), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:26,800 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions.
[2023-12-15 17:20:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2023-12-15 17:20:26,800 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 states have internal predecessors, (76), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35
[2023-12-15 17:20:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:26,801 INFO L225 Difference]: With dead ends: 101
[2023-12-15 17:20:26,801 INFO L226 Difference]: Without dead ends: 99
[2023-12-15 17:20:26,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1126, Invalid=5036, Unknown=0, NotChecked=0, Total=6162
[2023-12-15 17:20:26,803 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 109 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:26,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 187 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-15 17:20:26,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2023-12-15 17:20:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 56.
[2023-12-15 17:20:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions.
[2023-12-15 17:20:26,825 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 35
[2023-12-15 17:20:26,825 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:26,825 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions.
[2023-12-15 17:20:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 states have internal predecessors, (76), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions.
[2023-12-15 17:20:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-12-15 17:20:26,825 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:26,825 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:26,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:27,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:27,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:27,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 595307595, now seen corresponding path program 9 times
[2023-12-15 17:20:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:27,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919887832]
[2023-12-15 17:20:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:27,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919887832]
[2023-12-15 17:20:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919887832] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204028400]
[2023-12-15 17:20:27,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-15 17:20:27,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:27,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:27,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-15 17:20:27,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2023-12-15 17:20:27,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:27,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 49 conjunts are in the unsatisfiable core
[2023-12-15 17:20:27,792 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:27,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:27,922 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:27,935 INFO L349 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size
[2023-12-15 17:20:27,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 77
[2023-12-15 17:20:28,001 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,003 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,004 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,006 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,007 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,008 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:28,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:28,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 123
[2023-12-15 17:20:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:28,925 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:29,269 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size
[2023-12-15 17:20:29,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94
[2023-12-15 17:20:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204028400] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:29,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43
[2023-12-15 17:20:29,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454997724]
[2023-12-15 17:20:29,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:29,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states
[2023-12-15 17:20:29,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2023-12-15 17:20:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806
[2023-12-15 17:20:29,605 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:34,750 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions.
[2023-12-15 17:20:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2023-12-15 17:20:34,750 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36
[2023-12-15 17:20:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:34,751 INFO L225 Difference]: With dead ends: 112
[2023-12-15 17:20:34,751 INFO L226 Difference]: Without dead ends: 110
[2023-12-15 17:20:34,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=826, Invalid=7546, Unknown=0, NotChecked=0, Total=8372
[2023-12-15 17:20:34,753 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 118 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 72 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:34,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 639 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1385 Invalid, 4 Unknown, 0 Unchecked, 2.6s Time]
[2023-12-15 17:20:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-12-15 17:20:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 41.
[2023-12-15 17:20:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions.
[2023-12-15 17:20:34,773 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36
[2023-12-15 17:20:34,773 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:34,773 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions.
[2023-12-15 17:20:34,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions.
[2023-12-15 17:20:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2023-12-15 17:20:34,773 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:34,773 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:34,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:34,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-12-15 17:20:34,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:34,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash 810762091, now seen corresponding path program 10 times
[2023-12-15 17:20:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:34,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936984166]
[2023-12-15 17:20:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:35,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936984166]
[2023-12-15 17:20:35,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936984166] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:35,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40728770]
[2023-12-15 17:20:35,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-12-15 17:20:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:35,131 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:35,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-15 17:20:35,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-12-15 17:20:35,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:35,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-15 17:20:35,291 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:35,434 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40728770] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:35,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:35,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23
[2023-12-15 17:20:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594131947]
[2023-12-15 17:20:35,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:35,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-12-15 17:20:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-12-15 17:20:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506
[2023-12-15 17:20:35,525 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:35,653 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions.
[2023-12-15 17:20:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-12-15 17:20:35,654 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38
[2023-12-15 17:20:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:35,655 INFO L225 Difference]: With dead ends: 78
[2023-12-15 17:20:35,655 INFO L226 Difference]: Without dead ends: 53
[2023-12-15 17:20:35,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702
[2023-12-15 17:20:35,657 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:35,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 142 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:20:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2023-12-15 17:20:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41.
[2023-12-15 17:20:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions.
[2023-12-15 17:20:35,684 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 38
[2023-12-15 17:20:35,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:35,684 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions.
[2023-12-15 17:20:35,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions.
[2023-12-15 17:20:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2023-12-15 17:20:35,685 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:35,685 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:35,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:35,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-15 17:20:35,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:35,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1783665168, now seen corresponding path program 11 times
[2023-12-15 17:20:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855508756]
[2023-12-15 17:20:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:36,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:36,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855508756]
[2023-12-15 17:20:36,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855508756] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:36,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081258291]
[2023-12-15 17:20:36,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-12-15 17:20:36,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:36,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:36,601 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:36,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-15 17:20:36,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2023-12-15 17:20:36,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:36,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 46 conjunts are in the unsatisfiable core
[2023-12-15 17:20:36,725 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:36,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 37
[2023-12-15 17:20:36,820 INFO L349 Elim1Store]: treesize reduction 54, result has 28.9 percent of original size
[2023-12-15 17:20:36,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 79
[2023-12-15 17:20:36,875 INFO L349 Elim1Store]: treesize reduction 70, result has 23.9 percent of original size
[2023-12-15 17:20:36,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 109 treesize of output 121
[2023-12-15 17:20:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:37,661 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:38,134 INFO L349 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size
[2023-12-15 17:20:38,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 75
[2023-12-15 17:20:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081258291] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:38,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45
[2023-12-15 17:20:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218762531]
[2023-12-15 17:20:38,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:38,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2023-12-15 17:20:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2023-12-15 17:20:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1751, Unknown=0, NotChecked=0, Total=1980
[2023-12-15 17:20:38,232 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 45 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:40,944 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions.
[2023-12-15 17:20:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2023-12-15 17:20:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 45 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39
[2023-12-15 17:20:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:40,945 INFO L225 Difference]: With dead ends: 118
[2023-12-15 17:20:40,945 INFO L226 Difference]: Without dead ends: 116
[2023-12-15 17:20:40,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1371, Invalid=8331, Unknown=0, NotChecked=0, Total=9702
[2023-12-15 17:20:40,948 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 273 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:40,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 332 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-15 17:20:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2023-12-15 17:20:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 64.
[2023-12-15 17:20:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions.
[2023-12-15 17:20:41,003 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 39
[2023-12-15 17:20:41,003 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:41,003 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions.
[2023-12-15 17:20:41,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 45 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions.
[2023-12-15 17:20:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2023-12-15 17:20:41,004 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:41,004 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:41,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-12-15 17:20:41,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-15 17:20:41,209 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:41,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2070949543, now seen corresponding path program 12 times
[2023-12-15 17:20:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637873977]
[2023-12-15 17:20:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:41,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637873977]
[2023-12-15 17:20:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637873977] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256022521]
[2023-12-15 17:20:41,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2023-12-15 17:20:41,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:41,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:41,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:41,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-15 17:20:41,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2023-12-15 17:20:41,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:41,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 52 conjunts are in the unsatisfiable core
[2023-12-15 17:20:41,839 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:42,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,058 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,072 INFO L349 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size
[2023-12-15 17:20:42,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 77
[2023-12-15 17:20:42,175 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,176 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,176 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,181 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:42,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:42,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 123
[2023-12-15 17:20:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:43,623 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:44,007 INFO L349 Elim1Store]: treesize reduction 156, result has 16.6 percent of original size
[2023-12-15 17:20:44,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 94
[2023-12-15 17:20:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:44,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256022521] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:44,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:44,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 18] total 52
[2023-12-15 17:20:44,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973421683]
[2023-12-15 17:20:44,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:44,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states
[2023-12-15 17:20:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:44,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2023-12-15 17:20:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2381, Unknown=0, NotChecked=0, Total=2652
[2023-12-15 17:20:44,546 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:50,706 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions.
[2023-12-15 17:20:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2023-12-15 17:20:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40
[2023-12-15 17:20:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:50,708 INFO L225 Difference]: With dead ends: 129
[2023-12-15 17:20:50,708 INFO L226 Difference]: Without dead ends: 127
[2023-12-15 17:20:50,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1080, Invalid=10262, Unknown=0, NotChecked=0, Total=11342
[2023-12-15 17:20:50,711 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 220 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 119 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:50,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 778 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1795 Invalid, 5 Unknown, 0 Unchecked, 3.0s Time]
[2023-12-15 17:20:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2023-12-15 17:20:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 46.
[2023-12-15 17:20:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions.
[2023-12-15 17:20:50,743 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 40
[2023-12-15 17:20:50,743 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:50,743 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions.
[2023-12-15 17:20:50,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions.
[2023-12-15 17:20:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2023-12-15 17:20:50,743 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:50,743 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:50,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:50,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-12-15 17:20:50,949 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:50,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash 171584711, now seen corresponding path program 13 times
[2023-12-15 17:20:50,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:50,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436476189]
[2023-12-15 17:20:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:50,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:51,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436476189]
[2023-12-15 17:20:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436476189] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789890266]
[2023-12-15 17:20:51,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2023-12-15 17:20:51,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:51,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:51,553 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:51,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-15 17:20:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:51,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 54 conjunts are in the unsatisfiable core
[2023-12-15 17:20:51,626 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:51,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,736 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:51,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67
[2023-12-15 17:20:51,796 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,798 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,809 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size
[2023-12-15 17:20:51,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 91 treesize of output 103
[2023-12-15 17:20:51,879 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,881 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,882 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,883 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:51,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:51,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 139
[2023-12-15 17:20:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:20:52,892 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:53,444 INFO L349 Elim1Store]: treesize reduction 156, result has 15.7 percent of original size
[2023-12-15 17:20:53,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 153 treesize of output 103
[2023-12-15 17:20:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789890266] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:53,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:53,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 17] total 49
[2023-12-15 17:20:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130544047]
[2023-12-15 17:20:53,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:53,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2023-12-15 17:20:53,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2023-12-15 17:20:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=2052, Unknown=0, NotChecked=0, Total=2352
[2023-12-15 17:20:53,528 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:56,155 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions.
[2023-12-15 17:20:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2023-12-15 17:20:56,156 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42
[2023-12-15 17:20:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:56,157 INFO L225 Difference]: With dead ends: 104
[2023-12-15 17:20:56,157 INFO L226 Difference]: Without dead ends: 102
[2023-12-15 17:20:56,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1441, Invalid=8065, Unknown=0, NotChecked=0, Total=9506
[2023-12-15 17:20:56,158 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 228 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:56,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 225 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-15 17:20:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2023-12-15 17:20:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 49.
[2023-12-15 17:20:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions.
[2023-12-15 17:20:56,200 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 42
[2023-12-15 17:20:56,200 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:56,200 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions.
[2023-12-15 17:20:56,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-12-15 17:20:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions.
[2023-12-15 17:20:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2023-12-15 17:20:56,200 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:56,200 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:56,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-15 17:20:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:56,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:56,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 674261648, now seen corresponding path program 14 times
[2023-12-15 17:20:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948704560]
[2023-12-15 17:20:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948704560]
[2023-12-15 17:20:56,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948704560] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991171199]
[2023-12-15 17:20:56,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-12-15 17:20:56,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:56,574 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:56,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-15 17:20:56,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-12-15 17:20:56,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:56,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-12-15 17:20:56,650 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:56,798 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:20:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 100 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991171199] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:20:56,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:20:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28
[2023-12-15 17:20:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768022784]
[2023-12-15 17:20:56,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:20:56,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-12-15 17:20:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:20:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-12-15 17:20:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756
[2023-12-15 17:20:56,903 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:20:57,058 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions.
[2023-12-15 17:20:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-12-15 17:20:57,058 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45
[2023-12-15 17:20:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:20:57,059 INFO L225 Difference]: With dead ends: 95
[2023-12-15 17:20:57,059 INFO L226 Difference]: Without dead ends: 64
[2023-12-15 17:20:57,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 70 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056
[2023-12-15 17:20:57,059 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:20:57,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 130 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:20:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2023-12-15 17:20:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49.
[2023-12-15 17:20:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:20:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions.
[2023-12-15 17:20:57,093 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 45
[2023-12-15 17:20:57,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:20:57,094 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions.
[2023-12-15 17:20:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:20:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions.
[2023-12-15 17:20:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2023-12-15 17:20:57,094 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:20:57,094 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:20:57,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-12-15 17:20:57,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-12-15 17:20:57,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:20:57,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:20:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1689792528, now seen corresponding path program 15 times
[2023-12-15 17:20:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:20:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546843149]
[2023-12-15 17:20:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:20:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:20:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:20:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:20:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:20:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:20:57,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:20:57,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546843149]
[2023-12-15 17:20:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546843149] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:20:57,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660583178]
[2023-12-15 17:20:57,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-15 17:20:57,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:20:57,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:20:57,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:20:57,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-15 17:20:58,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2023-12-15 17:20:58,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:20:58,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 56 conjunts are in the unsatisfiable core
[2023-12-15 17:20:58,662 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:20:58,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31
[2023-12-15 17:20:58,834 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size
[2023-12-15 17:20:58,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 67
[2023-12-15 17:20:58,920 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:58,921 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:58,922 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:58,923 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:58,962 INFO L349 Elim1Store]: treesize reduction 154, result has 19.4 percent of original size
[2023-12-15 17:20:58,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 113
[2023-12-15 17:20:59,047 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,048 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,049 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,050 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,051 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,052 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,052 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,053 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,054 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,075 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,076 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,077 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,077 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,078 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,079 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,081 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,082 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,083 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,084 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,085 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:20:59,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:20:59,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 159
[2023-12-15 17:21:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:21:01,915 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:21:02,456 INFO L349 Elim1Store]: treesize reduction 278, result has 12.9 percent of original size
[2023-12-15 17:21:02,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 169 treesize of output 123
[2023-12-15 17:21:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:21:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660583178] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:21:03,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-15 17:21:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 56
[2023-12-15 17:21:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858425393]
[2023-12-15 17:21:03,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:21:03,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states
[2023-12-15 17:21:03,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:21:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2023-12-15 17:21:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2773, Unknown=0, NotChecked=0, Total=3080
[2023-12-15 17:21:03,092 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 56 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 56 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:21:08,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:21:08,861 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions.
[2023-12-15 17:21:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2023-12-15 17:21:08,862 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 56 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45
[2023-12-15 17:21:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:21:08,863 INFO L225 Difference]: With dead ends: 125
[2023-12-15 17:21:08,863 INFO L226 Difference]: Without dead ends: 123
[2023-12-15 17:21:08,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4126 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1316, Invalid=13690, Unknown=0, NotChecked=0, Total=15006
[2023-12-15 17:21:08,864 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 244 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2023-12-15 17:21:08,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 975 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2126 Invalid, 1 Unknown, 0 Unchecked, 1.7s Time]
[2023-12-15 17:21:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2023-12-15 17:21:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 43.
[2023-12-15 17:21:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-12-15 17:21:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions.
[2023-12-15 17:21:08,905 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 45
[2023-12-15 17:21:08,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:21:08,905 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions.
[2023-12-15 17:21:08,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 56 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-12-15 17:21:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions.
[2023-12-15 17:21:08,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2023-12-15 17:21:08,906 INFO L187 NwaCegarLoop]: Found error trace
[2023-12-15 17:21:08,906 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:21:08,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-15 17:21:09,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-12-15 17:21:09,112 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:21:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:21:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1319056277, now seen corresponding path program 16 times
[2023-12-15 17:21:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:21:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158389367]
[2023-12-15 17:21:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:21:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:21:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:21:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-12-15 17:21:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:21:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-12-15 17:21:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:21:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:21:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:21:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158389367]
[2023-12-15 17:21:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158389367] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-15 17:21:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564493349]
[2023-12-15 17:21:09,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-12-15 17:21:09,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:21:09,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:21:09,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:21:09,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-15 17:21:10,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-12-15 17:21:10,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:21:10,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 49 conjunts are in the unsatisfiable core
[2023-12-15 17:21:10,031 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:21:10,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47
[2023-12-15 17:21:10,116 INFO L349 Elim1Store]: treesize reduction 73, result has 27.7 percent of original size
[2023-12-15 17:21:10,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 101
[2023-12-15 17:21:10,185 INFO L349 Elim1Store]: treesize reduction 93, result has 23.1 percent of original size
[2023-12-15 17:21:10,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 143 treesize of output 155
[2023-12-15 17:21:10,293 INFO L349 Elim1Store]: treesize reduction 177, result has 23.4 percent of original size
[2023-12-15 17:21:10,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 189 treesize of output 207
Received shutdown request...
[2023-12-15 17:21:11,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-15 17:21:11,086 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-15 17:21:11,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-12-15 17:21:11,107 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-15 17:21:11,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:21:11,284 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 47 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates.
[2023-12-15 17:21:11,288 INFO L445 BasicCegarLoop]: Path program histogram: [16, 1, 1, 1]
[2023-12-15 17:21:11,289 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2023-12-15 17:21:11,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:21:11 BoogieIcfgContainer
[2023-12-15 17:21:11,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: Toolchain (without parser) took 65716.59ms. Allocated memory was 221.2MB in the beginning and 478.2MB in the end (delta: 256.9MB). Free memory was 170.6MB in the beginning and 201.0MB in the end (delta: -30.4MB). Peak memory consumption was 227.1MB. Max. memory is 8.0GB.
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 221.2MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.35ms. Allocated memory is still 221.2MB. Free memory was 170.6MB in the beginning and 159.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.19ms. Allocated memory is still 221.2MB. Free memory was 159.4MB in the beginning and 157.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: Boogie Preprocessor took 43.35ms. Allocated memory is still 221.2MB. Free memory was 157.9MB in the beginning and 155.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: RCFGBuilder took 287.59ms. Allocated memory is still 221.2MB. Free memory was 155.9MB in the beginning and 143.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
[2023-12-15 17:21:11,291 INFO L158 Benchmark]: TraceAbstraction took 65187.15ms. Allocated memory was 221.2MB in the beginning and 478.2MB in the end (delta: 256.9MB). Free memory was 143.0MB in the beginning and 201.0MB in the end (delta: -58.0MB). Peak memory consumption was 199.9MB. Max. memory is 8.0GB.
[2023-12-15 17:21:11,292 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.08ms. Allocated memory is still 221.2MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 169.35ms. Allocated memory is still 221.2MB. Free memory was 170.6MB in the beginning and 159.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
* Boogie Procedure Inliner took 25.19ms. Allocated memory is still 221.2MB. Free memory was 159.4MB in the beginning and 157.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 43.35ms. Allocated memory is still 221.2MB. Free memory was 157.9MB in the beginning and 155.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 287.59ms. Allocated memory is still 221.2MB. Free memory was 155.9MB in the beginning and 143.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
* TraceAbstraction took 65187.15ms. Allocated memory was 221.2MB in the beginning and 478.2MB in the end (delta: 256.9MB). Free memory was 143.0MB in the beginning and 201.0MB in the end (delta: -58.0MB). Peak memory consumption was 199.9MB. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction)
Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was analyzing trace of length 47 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.1s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 31.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 1810 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1810 mSDsluCounter, 4688 SdHoareTripleChecker+Invalid, 9.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4385 mSDsCounter, 800 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10307 IncrementalHoareTripleChecker+Invalid, 11117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 800 mSolverCounterUnsat, 303 mSDtfsCounter, 10307 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1792 GetRequests, 769 SyntacticMatches, 25 SemanticMatches, 998 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21399 ImplicationChecksByTransitivity, 32.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=14, InterpolantAutomatonStates: 632, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 570 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 25.6s InterpolantComputationTime, 1082 NumberOfCodeBlocks, 1082 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 1556 ConstructedInterpolants, 104 QuantifiedInterpolants, 34506 SizeOfPredicates, 243 NumberOfNonLiveVariables, 2603 ConjunctsInSsa, 573 ConjunctsInUnsatCore, 50 InterpolantComputations, 2 PerfectInterpolantSequences, 635/2393 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown