/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-56.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 20:52:00,429 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 20:52:00,478 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-20 20:52:00,482 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 20:52:00,482 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 20:52:00,498 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 20:52:00,499 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 20:52:00,499 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 20:52:00,499 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 20:52:00,500 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 20:52:00,500 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 20:52:00,500 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 20:52:00,501 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 20:52:00,501 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 20:52:00,502 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 20:52:00,502 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 20:52:00,502 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 20:52:00,502 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 20:52:00,503 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 20:52:00,503 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 20:52:00,503 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 20:52:00,504 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 20:52:00,504 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 20:52:00,504 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 20:52:00,505 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 20:52:00,505 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 20:52:00,505 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 20:52:00,506 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 20:52:00,506 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 20:52:00,506 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 20:52:00,507 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 20:52:00,507 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 20:52:00,507 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 20:52:00,507 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 20:52:00,508 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 20:52:00,508 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 20:52:00,508 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 20:52:00,509 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 20:52:00,509 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 20:52:00,509 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 20:52:00,510 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 20:52:00,510 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 20:52:00,510 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 20:52:00,510 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 20:52:00,674 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 20:52:00,696 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 20:52:00,698 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 20:52:00,699 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 20:52:00,700 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 20:52:00,700 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-56.i
[2023-12-20 20:52:01,801 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 20:52:01,992 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 20:52:01,992 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-56.i
[2023-12-20 20:52:02,000 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0594fcb/e5c41c72b32946329f71a8ab027c3dc2/FLAGb5e012eea
[2023-12-20 20:52:02,012 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0594fcb/e5c41c72b32946329f71a8ab027c3dc2
[2023-12-20 20:52:02,014 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 20:52:02,015 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 20:52:02,016 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 20:52:02,016 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 20:52:02,024 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 20:52:02,025 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,025 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1113b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02, skipping insertion in model container
[2023-12-20 20:52:02,026 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,063 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 20:52:02,206 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_fillercode_fillercodestructure_filler-pe-co_file-56.i[919,932]
[2023-12-20 20:52:02,283 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 20:52:02,294 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 20:52:02,304 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_fillercode_fillercodestructure_filler-pe-co_file-56.i[919,932]
[2023-12-20 20:52:02,339 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 20:52:02,353 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 20:52:02,354 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02 WrapperNode
[2023-12-20 20:52:02,354 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 20:52:02,355 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 20:52:02,355 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 20:52:02,355 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 20:52:02,361 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,374 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,428 INFO  L138                Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 211
[2023-12-20 20:52:02,428 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 20:52:02,429 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 20:52:02,429 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 20:52:02,429 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 20:52:02,439 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,439 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,444 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,468 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].
[2023-12-20 20:52:02,468 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,469 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,481 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,484 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,487 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,489 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,495 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 20:52:02,496 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 20:52:02,496 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 20:52:02,496 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 20:52:02,497 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (1/1) ...
[2023-12-20 20:52:02,501 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 20:52:02,520 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 20:52:02,538 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)
[2023-12-20 20:52:02,553 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
[2023-12-20 20:52:02,570 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 20:52:02,570 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 20:52:02,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 20:52:02,570 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 20:52:02,570 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 20:52:02,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 20:52:02,671 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 20:52:02,675 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 20:52:03,069 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 20:52:03,122 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 20:52:03,122 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 20:52:03,123 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:52:03 BoogieIcfgContainer
[2023-12-20 20:52:03,123 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 20:52:03,127 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 20:52:03,127 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 20:52:03,130 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 20:52:03,130 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:52:02" (1/3) ...
[2023-12-20 20:52:03,131 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bab715a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:52:03, skipping insertion in model container
[2023-12-20 20:52:03,131 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:52:02" (2/3) ...
[2023-12-20 20:52:03,131 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bab715a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:52:03, skipping insertion in model container
[2023-12-20 20:52:03,131 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:52:03" (3/3) ...
[2023-12-20 20:52:03,133 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-56.i
[2023-12-20 20:52:03,146 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 20:52:03,146 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 20:52:03,187 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 20:52:03,191 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;@4b17dce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 20:52:03,192 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 20:52:03,195 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 87 states, 50 states have (on average 1.42) internal successors, (71), 51 states have internal predecessors, (71), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-20 20:52:03,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-20 20:52:03,212 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 20:52:03,213 INFO  L195           NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 20:52:03,213 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 20:52:03,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 20:52:03,218 INFO  L85        PathProgramCache]: Analyzing trace with hash -1517284770, now seen corresponding path program 1 times
[2023-12-20 20:52:03,225 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 20:52:03,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926589941]
[2023-12-20 20:52:03,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:03,226 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 20:52:03,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 20:52:03,464 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 20:52:03,467 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926589941]
[2023-12-20 20:52:03,467 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-20 20:52:03,467 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766594935]
[2023-12-20 20:52:03,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:03,468 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 20:52:03,468 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 20:52:03,471 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)
[2023-12-20 20:52:03,472 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-20 20:52:03,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 20:52:03,641 INFO  L262         TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-20 20:52:03,650 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 20:52:03,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked.
[2023-12-20 20:52:03,693 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 20:52:03,693 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [766594935] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 20:52:03,693 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 20:52:03,694 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 20:52:03,695 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993970813]
[2023-12-20 20:52:03,696 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 20:52:03,700 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 20:52:03,700 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 20:52:03,722 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 20:52:03,723 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 20:52:03,725 INFO  L87              Difference]: Start difference. First operand  has 87 states, 50 states have (on average 1.42) internal successors, (71), 51 states have internal predecessors, (71), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34)
[2023-12-20 20:52:03,763 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 20:52:03,763 INFO  L93              Difference]: Finished difference Result 171 states and 310 transitions.
[2023-12-20 20:52:03,764 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 20:52:03,766 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 210
[2023-12-20 20:52:03,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 20:52:03,772 INFO  L225             Difference]: With dead ends: 171
[2023-12-20 20:52:03,773 INFO  L226             Difference]: Without dead ends: 85
[2023-12-20 20:52:03,776 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 20:52:03,779 INFO  L413           NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 20:52:03,780 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 20:52:03,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-12-20 20:52:03,815 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2023-12-20 20:52:03,816 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-20 20:52:03,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 134 transitions.
[2023-12-20 20:52:03,819 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 134 transitions. Word has length 210
[2023-12-20 20:52:03,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 20:52:03,820 INFO  L495      AbstractCegarLoop]: Abstraction has 85 states and 134 transitions.
[2023-12-20 20:52:03,820 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34)
[2023-12-20 20:52:03,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 134 transitions.
[2023-12-20 20:52:03,824 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-20 20:52:03,824 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 20:52:03,824 INFO  L195           NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 20:52:03,833 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-20 20:52:04,031 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
[2023-12-20 20:52:04,031 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 20:52:04,032 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 20:52:04,032 INFO  L85        PathProgramCache]: Analyzing trace with hash -1278360810, now seen corresponding path program 1 times
[2023-12-20 20:52:04,032 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 20:52:04,032 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294696951]
[2023-12-20 20:52:04,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:04,033 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 20:52:04,112 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 20:52:04,113 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507470795]
[2023-12-20 20:52:04,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:04,113 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 20:52:04,113 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 20:52:04,115 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)
[2023-12-20 20:52:04,154 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-20 20:52:04,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 20:52:04,282 INFO  L262         TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-20 20:52:04,291 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 20:52:04,380 INFO  L134       CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked.
[2023-12-20 20:52:04,380 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 20:52:04,381 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 20:52:04,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294696951]
[2023-12-20 20:52:04,381 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 20:52:04,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507470795]
[2023-12-20 20:52:04,381 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507470795] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 20:52:04,382 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 20:52:04,382 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-20 20:52:04,382 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467780529]
[2023-12-20 20:52:04,382 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 20:52:04,384 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 20:52:04,384 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 20:52:04,385 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 20:52:04,386 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 20:52:04,386 INFO  L87              Difference]: Start difference. First operand 85 states and 134 transitions. Second operand  has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34)
[2023-12-20 20:52:04,489 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 20:52:04,489 INFO  L93              Difference]: Finished difference Result 251 states and 396 transitions.
[2023-12-20 20:52:04,489 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 20:52:04,490 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 210
[2023-12-20 20:52:04,492 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 20:52:04,495 INFO  L225             Difference]: With dead ends: 251
[2023-12-20 20:52:04,495 INFO  L226             Difference]: Without dead ends: 167
[2023-12-20 20:52:04,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 20:52:04,497 INFO  L413           NwaCegarLoop]: 135 mSDtfsCounter, 117 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 20:52:04,498 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 257 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 20:52:04,498 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2023-12-20 20:52:04,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165.
[2023-12-20 20:52:04,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 165 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 94 states have internal predecessors, (124), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68)
[2023-12-20 20:52:04,555 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 260 transitions.
[2023-12-20 20:52:04,555 INFO  L78                 Accepts]: Start accepts. Automaton has 165 states and 260 transitions. Word has length 210
[2023-12-20 20:52:04,556 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 20:52:04,557 INFO  L495      AbstractCegarLoop]: Abstraction has 165 states and 260 transitions.
[2023-12-20 20:52:04,558 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34)
[2023-12-20 20:52:04,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 165 states and 260 transitions.
[2023-12-20 20:52:04,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-20 20:52:04,562 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 20:52:04,563 INFO  L195           NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 20:52:04,571 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-20 20:52:04,763 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
[2023-12-20 20:52:04,764 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 20:52:04,764 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 20:52:04,764 INFO  L85        PathProgramCache]: Analyzing trace with hash 309987092, now seen corresponding path program 1 times
[2023-12-20 20:52:04,764 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 20:52:04,765 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901218411]
[2023-12-20 20:52:04,765 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:04,765 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 20:52:04,817 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 20:52:04,817 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702677503]
[2023-12-20 20:52:04,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:04,818 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 20:52:04,818 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 20:52:04,830 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)
[2023-12-20 20:52:04,852 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-20 20:52:04,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 20:52:04,979 INFO  L262         TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-20 20:52:04,986 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 20:52:05,136 INFO  L134       CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked.
[2023-12-20 20:52:05,137 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 20:52:05,137 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 20:52:05,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901218411]
[2023-12-20 20:52:05,137 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 20:52:05,138 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702677503]
[2023-12-20 20:52:05,138 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [702677503] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 20:52:05,138 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 20:52:05,138 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-20 20:52:05,138 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225093625]
[2023-12-20 20:52:05,138 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 20:52:05,140 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-20 20:52:05,141 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 20:52:05,142 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-20 20:52:05,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-20 20:52:05,142 INFO  L87              Difference]: Start difference. First operand 165 states and 260 transitions. Second operand  has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34)
[2023-12-20 20:52:05,308 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 20:52:05,309 INFO  L93              Difference]: Finished difference Result 468 states and 727 transitions.
[2023-12-20 20:52:05,309 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-20 20:52:05,309 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 210
[2023-12-20 20:52:05,312 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 20:52:05,315 INFO  L225             Difference]: With dead ends: 468
[2023-12-20 20:52:05,315 INFO  L226             Difference]: Without dead ends: 291
[2023-12-20 20:52:05,319 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2023-12-20 20:52:05,321 INFO  L413           NwaCegarLoop]: 165 mSDtfsCounter, 207 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 20:52:05,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 528 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 20:52:05,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 291 states.
[2023-12-20 20:52:05,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 240.
[2023-12-20 20:52:05,367 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 240 states, 159 states have (on average 1.4088050314465408) internal successors, (224), 161 states have internal predecessors, (224), 76 states have call successors, (76), 4 states have call predecessors, (76), 4 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76)
[2023-12-20 20:52:05,369 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 376 transitions.
[2023-12-20 20:52:05,370 INFO  L78                 Accepts]: Start accepts. Automaton has 240 states and 376 transitions. Word has length 210
[2023-12-20 20:52:05,371 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 20:52:05,371 INFO  L495      AbstractCegarLoop]: Abstraction has 240 states and 376 transitions.
[2023-12-20 20:52:05,371 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34)
[2023-12-20 20:52:05,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 240 states and 376 transitions.
[2023-12-20 20:52:05,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-20 20:52:05,375 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 20:52:05,375 INFO  L195           NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 20:52:05,384 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-20 20:52:05,585 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
[2023-12-20 20:52:05,587 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 20:52:05,588 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 20:52:05,588 INFO  L85        PathProgramCache]: Analyzing trace with hash -701130158, now seen corresponding path program 1 times
[2023-12-20 20:52:05,588 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 20:52:05,591 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921085925]
[2023-12-20 20:52:05,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:05,592 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 20:52:05,634 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 20:52:05,634 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670566994]
[2023-12-20 20:52:05,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:05,635 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 20:52:05,635 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 20:52:05,640 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)
[2023-12-20 20:52:05,648 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-20 20:52:05,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 20:52:05,765 INFO  L262         TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-20 20:52:05,769 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 20:52:06,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 2244 backedges. 505 proven. 87 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked.
[2023-12-20 20:52:06,013 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 20:52:06,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 2244 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked.
[2023-12-20 20:52:06,216 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 20:52:06,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921085925]
[2023-12-20 20:52:06,217 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 20:52:06,217 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670566994]
[2023-12-20 20:52:06,217 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [670566994] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-20 20:52:06,217 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-20 20:52:06,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2023-12-20 20:52:06,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117078504]
[2023-12-20 20:52:06,217 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-20 20:52:06,218 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-20 20:52:06,218 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 20:52:06,219 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-20 20:52:06,219 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-20 20:52:06,219 INFO  L87              Difference]: Start difference. First operand 240 states and 376 transitions. Second operand  has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64)
[2023-12-20 20:52:06,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 20:52:06,426 INFO  L93              Difference]: Finished difference Result 368 states and 568 transitions.
[2023-12-20 20:52:06,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-20 20:52:06,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 210
[2023-12-20 20:52:06,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 20:52:06,429 INFO  L225             Difference]: With dead ends: 368
[2023-12-20 20:52:06,429 INFO  L226             Difference]: Without dead ends: 126
[2023-12-20 20:52:06,449 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 412 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2023-12-20 20:52:06,450 INFO  L413           NwaCegarLoop]: 91 mSDtfsCounter, 84 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-20 20:52:06,450 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 202 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-20 20:52:06,451 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2023-12-20 20:52:06,466 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122.
[2023-12-20 20:52:06,467 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 122 states, 80 states have (on average 1.3375) internal successors, (107), 81 states have internal predecessors, (107), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38)
[2023-12-20 20:52:06,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 183 transitions.
[2023-12-20 20:52:06,468 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 183 transitions. Word has length 210
[2023-12-20 20:52:06,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 20:52:06,470 INFO  L495      AbstractCegarLoop]: Abstraction has 122 states and 183 transitions.
[2023-12-20 20:52:06,471 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64)
[2023-12-20 20:52:06,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 183 transitions.
[2023-12-20 20:52:06,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2023-12-20 20:52:06,473 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 20:52:06,474 INFO  L195           NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 20:52:06,487 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-20 20:52:06,687 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 20:52:06,687 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 20:52:06,688 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 20:52:06,688 INFO  L85        PathProgramCache]: Analyzing trace with hash -975934286, now seen corresponding path program 1 times
[2023-12-20 20:52:06,688 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 20:52:06,688 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482003551]
[2023-12-20 20:52:06,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:06,689 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 20:52:06,730 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 20:52:06,731 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011231935]
[2023-12-20 20:52:06,731 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 20:52:06,731 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 20:52:06,731 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 20:52:06,732 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)
[2023-12-20 20:52:06,753 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-20 20:52:07,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 20:52:07,023 INFO  L262         TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 63 conjunts are in the unsatisfiable core
[2023-12-20 20:52:07,030 INFO  L285         TraceCheckSpWp]: Computing forward predicates...