/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/hardness-nfm22/hardness_codestructure_dependencies_file-45.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-19 05:37:46,961 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-19 05:37:47,024 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-19 05:37:47,028 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-19 05:37:47,029 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-19 05:37:47,053 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-19 05:37:47,053 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-19 05:37:47,053 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-19 05:37:47,054 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-19 05:37:47,057 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-19 05:37:47,057 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-19 05:37:47,057 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-19 05:37:47,058 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-19 05:37:47,059 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-19 05:37:47,059 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-19 05:37:47,059 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-19 05:37:47,059 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-19 05:37:47,059 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-19 05:37:47,059 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-19 05:37:47,060 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-19 05:37:47,060 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-19 05:37:47,068 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-19 05:37:47,068 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-19 05:37:47,068 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-19 05:37:47,068 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-19 05:37:47,068 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-19 05:37:47,069 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-19 05:37:47,069 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-19 05:37:47,069 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-19 05:37:47,069 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-19 05:37:47,070 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-19 05:37:47,070 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-19 05:37:47,070 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 05:37:47,070 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-19 05:37:47,071 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-19 05:37:47,072 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-19 05:37:47,248 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-19 05:37:47,264 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-19 05:37:47,266 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-19 05:37:47,267 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-19 05:37:47,267 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-19 05:37:47,268 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-45.i
[2023-12-19 05:37:48,336 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-19 05:37:48,514 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-19 05:37:48,514 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-45.i
[2023-12-19 05:37:48,521 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be94419d5/6f09bc371ef142d48013d11118dc50b0/FLAG3cc180881
[2023-12-19 05:37:48,534 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be94419d5/6f09bc371ef142d48013d11118dc50b0
[2023-12-19 05:37:48,536 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-19 05:37:48,537 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-19 05:37:48,539 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-19 05:37:48,539 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-19 05:37:48,542 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-19 05:37:48,543 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,544 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49398d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48, skipping insertion in model container
[2023-12-19 05:37:48,544 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,573 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-19 05:37:48,689 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-45.i[919,932]
[2023-12-19 05:37:48,727 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 05:37:48,735 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-19 05:37:48,742 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-45.i[919,932]
[2023-12-19 05:37:48,760 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 05:37:48,771 INFO  L206         MainTranslator]: Completed translation
[2023-12-19 05:37:48,771 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48 WrapperNode
[2023-12-19 05:37:48,771 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-19 05:37:48,772 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-19 05:37:48,772 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-19 05:37:48,772 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-19 05:37:48,777 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,782 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,817 INFO  L138                Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117
[2023-12-19 05:37:48,817 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-19 05:37:48,818 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-19 05:37:48,818 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-19 05:37:48,818 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-19 05:37:48,827 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,827 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,829 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,840 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-19 05:37:48,841 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,841 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,855 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,858 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,859 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,860 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,876 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-19 05:37:48,877 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-19 05:37:48,877 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-19 05:37:48,877 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-19 05:37:48,878 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (1/1) ...
[2023-12-19 05:37:48,882 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 05:37:48,890 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 05:37:48,919 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)
[2023-12-19 05:37:48,952 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
[2023-12-19 05:37:48,958 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-19 05:37:48,958 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-19 05:37:48,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-19 05:37:48,959 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-19 05:37:48,959 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-19 05:37:48,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-19 05:37:49,034 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-19 05:37:49,036 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-19 05:37:49,310 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-19 05:37:49,365 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-19 05:37:49,365 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-19 05:37:49,365 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:37:49 BoogieIcfgContainer
[2023-12-19 05:37:49,366 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-19 05:37:49,367 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-19 05:37:49,367 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-19 05:37:49,369 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-19 05:37:49,369 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:37:48" (1/3) ...
[2023-12-19 05:37:49,376 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667d10de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:37:49, skipping insertion in model container
[2023-12-19 05:37:49,376 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:37:48" (2/3) ...
[2023-12-19 05:37:49,376 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667d10de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:37:49, skipping insertion in model container
[2023-12-19 05:37:49,377 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:37:49" (3/3) ...
[2023-12-19 05:37:49,378 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-45.i
[2023-12-19 05:37:49,389 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-19 05:37:49,389 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-19 05:37:49,417 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-19 05:37:49,421 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;@5abfaef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-19 05:37:49,422 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-19 05:37:49,425 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 49 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-12-19 05:37:49,433 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2023-12-19 05:37:49,433 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 05:37:49,434 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 05:37:49,434 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 05:37:49,437 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 05:37:49,438 INFO  L85        PathProgramCache]: Analyzing trace with hash 749594026, now seen corresponding path program 1 times
[2023-12-19 05:37:49,446 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 05:37:49,446 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711627713]
[2023-12-19 05:37:49,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:49,447 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 05:37:49,586 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 05:37:49,586 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063695985]
[2023-12-19 05:37:49,587 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:49,587 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 05:37:49,587 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 05:37:49,591 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)
[2023-12-19 05:37:49,628 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-19 05:37:49,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 05:37:49,681 INFO  L262         TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-19 05:37:49,687 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 05:37:49,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2023-12-19 05:37:49,742 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 05:37:49,743 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 05:37:49,743 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711627713]
[2023-12-19 05:37:49,743 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 05:37:49,743 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063695985]
[2023-12-19 05:37:49,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063695985] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 05:37:49,744 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 05:37:49,744 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-19 05:37:49,745 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549996253]
[2023-12-19 05:37:49,746 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 05:37:49,748 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 05:37:49,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 05:37:49,766 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 05:37:49,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 05:37:49,768 INFO  L87              Difference]: Start difference. First operand  has 49 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-19 05:37:49,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 05:37:49,846 INFO  L93              Difference]: Finished difference Result 138 states and 253 transitions.
[2023-12-19 05:37:49,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-19 05:37:49,850 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101
[2023-12-19 05:37:49,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 05:37:49,858 INFO  L225             Difference]: With dead ends: 138
[2023-12-19 05:37:49,858 INFO  L226             Difference]: Without dead ends: 90
[2023-12-19 05:37:49,861 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 05:37:49,864 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-19 05:37:49,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 131 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 05:37:49,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2023-12-19 05:37:49,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88.
[2023-12-19 05:37:49,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 states have internal predecessors, (67), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2023-12-19 05:37:49,914 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions.
[2023-12-19 05:37:49,915 INFO  L78                 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 101
[2023-12-19 05:37:49,916 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 05:37:49,916 INFO  L495      AbstractCegarLoop]: Abstraction has 88 states and 131 transitions.
[2023-12-19 05:37:49,916 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-19 05:37:49,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions.
[2023-12-19 05:37:49,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-12-19 05:37:49,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 05:37:49,919 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 05:37:49,931 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-19 05:37:50,127 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-12-19 05:37:50,127 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 05:37:50,128 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 05:37:50,128 INFO  L85        PathProgramCache]: Analyzing trace with hash -1263296592, now seen corresponding path program 1 times
[2023-12-19 05:37:50,128 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 05:37:50,128 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230694410]
[2023-12-19 05:37:50,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:50,129 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 05:37:50,166 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 05:37:50,166 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8789261]
[2023-12-19 05:37:50,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:50,166 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 05:37:50,167 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 05:37:50,206 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)
[2023-12-19 05:37:50,211 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-19 05:37:50,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 05:37:50,337 INFO  L262         TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-19 05:37:50,346 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 05:37:50,410 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2023-12-19 05:37:50,410 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-19 05:37:50,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2023-12-19 05:37:50,583 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 05:37:50,583 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230694410]
[2023-12-19 05:37:50,584 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 05:37:50,584 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8789261]
[2023-12-19 05:37:50,584 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [8789261] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-19 05:37:50,584 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-19 05:37:50,584 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9
[2023-12-19 05:37:50,585 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151901201]
[2023-12-19 05:37:50,585 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-19 05:37:50,586 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-19 05:37:50,587 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 05:37:50,587 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-19 05:37:50,588 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-12-19 05:37:50,588 INFO  L87              Difference]: Start difference. First operand 88 states and 131 transitions. Second operand  has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)
[2023-12-19 05:37:50,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 05:37:50,770 INFO  L93              Difference]: Finished difference Result 144 states and 208 transitions.
[2023-12-19 05:37:50,771 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-19 05:37:50,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 102
[2023-12-19 05:37:50,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 05:37:50,773 INFO  L225             Difference]: With dead ends: 144
[2023-12-19 05:37:50,774 INFO  L226             Difference]: Without dead ends: 57
[2023-12-19 05:37:50,777 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210
[2023-12-19 05:37:50,779 INFO  L413           NwaCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-19 05:37:50,781 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 89 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-19 05:37:50,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2023-12-19 05:37:50,792 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50.
[2023-12-19 05:37:50,793 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-12-19 05:37:50,794 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions.
[2023-12-19 05:37:50,794 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 102
[2023-12-19 05:37:50,794 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 05:37:50,794 INFO  L495      AbstractCegarLoop]: Abstraction has 50 states and 69 transitions.
[2023-12-19 05:37:50,795 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)
[2023-12-19 05:37:50,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions.
[2023-12-19 05:37:50,799 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2023-12-19 05:37:50,799 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 05:37:50,799 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 05:37:50,808 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-19 05:37:51,004 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,SelfDestructingSolverStorable1
[2023-12-19 05:37:51,005 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 05:37:51,006 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 05:37:51,006 INFO  L85        PathProgramCache]: Analyzing trace with hash 1747621370, now seen corresponding path program 1 times
[2023-12-19 05:37:51,006 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 05:37:51,006 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249585131]
[2023-12-19 05:37:51,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:51,006 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 05:37:51,070 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 05:37:51,070 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055687487]
[2023-12-19 05:37:51,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:51,070 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 05:37:51,070 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 05:37:51,076 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)
[2023-12-19 05:37:51,123 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-19 05:37:51,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 05:37:51,174 INFO  L262         TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-19 05:37:51,180 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-19 05:37:52,456 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2023-12-19 05:37:52,457 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-19 05:37:52,457 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 05:37:52,457 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249585131]
[2023-12-19 05:37:52,457 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-19 05:37:52,457 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055687487]
[2023-12-19 05:37:52,457 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055687487] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 05:37:52,457 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 05:37:52,457 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-19 05:37:52,457 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510843325]
[2023-12-19 05:37:52,458 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 05:37:52,458 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-19 05:37:52,458 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 05:37:52,459 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-19 05:37:52,459 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-19 05:37:52,459 INFO  L87              Difference]: Start difference. First operand 50 states and 69 transitions. Second operand  has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-19 05:37:52,655 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 05:37:52,655 INFO  L93              Difference]: Finished difference Result 131 states and 180 transitions.
[2023-12-19 05:37:52,655 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-19 05:37:52,655 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 102
[2023-12-19 05:37:52,656 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 05:37:52,656 INFO  L225             Difference]: With dead ends: 131
[2023-12-19 05:37:52,656 INFO  L226             Difference]: Without dead ends: 82
[2023-12-19 05:37:52,657 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-19 05:37:52,657 INFO  L413           NwaCegarLoop]: 78 mSDtfsCounter, 94 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-19 05:37:52,658 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 98 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-19 05:37:52,658 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2023-12-19 05:37:52,693 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79.
[2023-12-19 05:37:52,693 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 52 states have internal predecessors, (60), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-19 05:37:52,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 108 transitions.
[2023-12-19 05:37:52,694 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 108 transitions. Word has length 102
[2023-12-19 05:37:52,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 05:37:52,694 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 108 transitions.
[2023-12-19 05:37:52,694 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2023-12-19 05:37:52,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 108 transitions.
[2023-12-19 05:37:52,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2023-12-19 05:37:52,695 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 05:37:52,695 INFO  L195           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 05:37:52,703 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-19 05:37:52,900 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 05:37:52,901 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 05:37:52,901 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 05:37:52,901 INFO  L85        PathProgramCache]: Analyzing trace with hash -1667817581, now seen corresponding path program 1 times
[2023-12-19 05:37:52,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 05:37:52,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257281109]
[2023-12-19 05:37:52,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:52,902 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 05:37:52,922 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-19 05:37:52,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589820161]
[2023-12-19 05:37:52,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 05:37:52,923 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-19 05:37:52,923 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 05:37:52,932 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)
[2023-12-19 05:37:52,964 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-19 05:37:53,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 05:37:53,015 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 42 conjunts are in the unsatisfiable core
[2023-12-19 05:37:53,020 INFO  L285         TraceCheckSpWp]: Computing forward predicates...