/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_floatingpointinfluence_has-floats_file-85.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 22:02:54,767 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 22:02:54,832 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 22:02:54,835 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 22:02:54,835 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 22:02:54,848 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 22:02:54,848 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 22:02:54,848 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 22:02:54,849 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 22:02:54,849 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 22:02:54,849 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 22:02:54,849 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 22:02:54,850 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 22:02:54,850 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 22:02:54,850 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 22:02:54,850 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 22:02:54,851 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 22:02:54,851 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 22:02:54,851 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 22:02:54,851 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 22:02:54,852 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 22:02:54,852 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 22:02:54,852 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 22:02:54,852 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 22:02:54,853 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 22:02:54,853 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 22:02:54,853 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 22:02:54,853 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 22:02:54,853 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 22:02:54,854 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 22:02:54,854 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 22:02:54,854 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 22:02:54,854 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 22:02:54,854 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 22:02:54,854 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 22:02:54,855 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 22:02:54,856 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 22:02:54,856 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 22:02:55,027 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 22:02:55,047 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 22:02:55,049 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 22:02:55,049 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 22:02:55,050 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 22:02:55,050 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-85.i
[2023-12-20 22:02:56,203 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 22:02:56,359 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 22:02:56,365 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-85.i
[2023-12-20 22:02:56,371 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c742283/5e687055ac0944d8843dc5233d4e269f/FLAGa77c448e2
[2023-12-20 22:02:56,380 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c742283/5e687055ac0944d8843dc5233d4e269f
[2023-12-20 22:02:56,384 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 22:02:56,385 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 22:02:56,385 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 22:02:56,386 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 22:02:56,389 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 22:02:56,389 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,390 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7688a1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56, skipping insertion in model container
[2023-12-20 22:02:56,390 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,407 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 22:02:56,508 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_floatingpointinfluence_has-floats_file-85.i[917,930]
[2023-12-20 22:02:56,546 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 22:02:56,558 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 22:02:56,567 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_floatingpointinfluence_has-floats_file-85.i[917,930]
[2023-12-20 22:02:56,589 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 22:02:56,605 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 22:02:56,605 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56 WrapperNode
[2023-12-20 22:02:56,605 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 22:02:56,608 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 22:02:56,608 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 22:02:56,608 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 22:02:56,615 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,624 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,686 INFO  L138                Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126
[2023-12-20 22:02:56,686 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 22:02:56,687 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 22:02:56,687 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 22:02:56,687 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 22:02:56,699 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,699 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,717 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,729 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 22:02:56,729 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,729 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,746 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,751 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,752 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,753 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,755 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 22:02:56,756 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 22:02:56,756 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 22:02:56,756 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 22:02:56,757 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (1/1) ...
[2023-12-20 22:02:56,770 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 22:02:56,779 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 22:02:56,818 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 22:02:56,850 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 22:02:56,854 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 22:02:56,854 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 22:02:56,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 22:02:56,854 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 22:02:56,854 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 22:02:56,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 22:02:56,933 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 22:02:56,935 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 22:02:57,213 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 22:02:57,282 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 22:02:57,283 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 22:02:57,283 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:02:57 BoogieIcfgContainer
[2023-12-20 22:02:57,283 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 22:02:57,287 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 22:02:57,287 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 22:02:57,289 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 22:02:57,289 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:02:56" (1/3) ...
[2023-12-20 22:02:57,290 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3349b9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:02:57, skipping insertion in model container
[2023-12-20 22:02:57,290 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:02:56" (2/3) ...
[2023-12-20 22:02:57,291 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3349b9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:02:57, skipping insertion in model container
[2023-12-20 22:02:57,291 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:02:57" (3/3) ...
[2023-12-20 22:02:57,291 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-85.i
[2023-12-20 22:02:57,303 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 22:02:57,303 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 22:02:57,341 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 22:02:57,346 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;@2c731964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 22:02:57,347 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 22:02:57,350 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 53 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 28 states have internal predecessors, (37), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-20 22:02:57,364 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-20 22:02:57,365 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 22:02:57,366 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:57,366 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 22:02:57,370 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 22:02:57,370 INFO  L85        PathProgramCache]: Analyzing trace with hash -682589884, now seen corresponding path program 1 times
[2023-12-20 22:02:57,376 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 22:02:57,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472684391]
[2023-12-20 22:02:57,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 22:02:57,377 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 22:02:57,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 22:02:57,559 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 22:02:57,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472684391]
[2023-12-20 22:02:57,560 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-20 22:02:57,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046966792]
[2023-12-20 22:02:57,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 22:02:57,561 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 22:02:57,561 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 22:02:57,565 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 22:02:57,571 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 22:02:57,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 22:02:57,693 INFO  L262         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-20 22:02:57,702 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 22:02:57,745 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked.
[2023-12-20 22:02:57,746 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 22:02:57,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046966792] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 22:02:57,746 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 22:02:57,747 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 22:02:57,748 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736206092]
[2023-12-20 22:02:57,750 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 22:02:57,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 22:02:57,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 22:02:57,779 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 22:02:57,779 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 22:02:57,781 INFO  L87              Difference]: Start difference. First operand  has 53 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 28 states have internal predecessors, (37), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23)
[2023-12-20 22:02:57,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 22:02:57,821 INFO  L93              Difference]: Finished difference Result 103 states and 187 transitions.
[2023-12-20 22:02:57,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 22:02:57,823 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135
[2023-12-20 22:02:57,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 22:02:57,830 INFO  L225             Difference]: With dead ends: 103
[2023-12-20 22:02:57,830 INFO  L226             Difference]: Without dead ends: 51
[2023-12-20 22:02:57,834 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 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 22:02:57,838 INFO  L413           NwaCegarLoop]: 75 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, 75 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 22:02:57,839 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 22:02:57,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2023-12-20 22:02:57,878 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2023-12-20 22:02:57,879 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-20 22:02:57,883 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 78 transitions.
[2023-12-20 22:02:57,884 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states and 78 transitions. Word has length 135
[2023-12-20 22:02:57,884 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 22:02:57,885 INFO  L495      AbstractCegarLoop]: Abstraction has 51 states and 78 transitions.
[2023-12-20 22:02:57,885 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23)
[2023-12-20 22:02:57,885 INFO  L276                IsEmpty]: Start isEmpty. Operand 51 states and 78 transitions.
[2023-12-20 22:02:57,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-20 22:02:57,887 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 22:02:57,887 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:57,895 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-20 22:02:58,093 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 22:02:58,094 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 22:02:58,094 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 22:02:58,095 INFO  L85        PathProgramCache]: Analyzing trace with hash -1279187578, now seen corresponding path program 1 times
[2023-12-20 22:02:58,095 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 22:02:58,095 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577879523]
[2023-12-20 22:02:58,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 22:02:58,095 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 22:02:58,141 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 22:02:58,142 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706511499]
[2023-12-20 22:02:58,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 22:02:58,142 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 22:02:58,142 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 22:02:58,143 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 22:02:58,146 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 22:02:58,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 22:02:58,239 INFO  L262         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-20 22:02:58,242 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 22:02:58,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 256 proven. 57 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked.
[2023-12-20 22:02:58,480 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 22:02:58,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked.
[2023-12-20 22:02:58,632 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 22:02:58,632 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577879523]
[2023-12-20 22:02:58,632 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 22:02:58,632 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706511499]
[2023-12-20 22:02:58,632 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706511499] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-20 22:02:58,632 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-20 22:02:58,632 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2023-12-20 22:02:58,633 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949566805]
[2023-12-20 22:02:58,633 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-20 22:02:58,634 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-20 22:02:58,634 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 22:02:58,634 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-20 22:02:58,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-12-20 22:02:58,635 INFO  L87              Difference]: Start difference. First operand 51 states and 78 transitions. Second operand  has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43)
[2023-12-20 22:02:58,956 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 22:02:58,956 INFO  L93              Difference]: Finished difference Result 166 states and 244 transitions.
[2023-12-20 22:02:58,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-12-20 22:02:58,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 135
[2023-12-20 22:02:58,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 22:02:58,959 INFO  L225             Difference]: With dead ends: 166
[2023-12-20 22:02:58,959 INFO  L226             Difference]: Without dead ends: 116
[2023-12-20 22:02:58,960 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2023-12-20 22:02:58,960 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-20 22:02:58,961 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 207 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-20 22:02:58,961 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2023-12-20 22:02:58,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56.
[2023-12-20 22:02:58,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-20 22:02:58,971 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions.
[2023-12-20 22:02:58,971 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 135
[2023-12-20 22:02:58,971 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 22:02:58,971 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 82 transitions.
[2023-12-20 22:02:58,972 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43)
[2023-12-20 22:02:58,972 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions.
[2023-12-20 22:02:58,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2023-12-20 22:02:58,973 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 22:02:58,973 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:58,983 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-20 22:02:59,179 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 22:02:59,179 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 22:02:59,180 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 22:02:59,181 INFO  L85        PathProgramCache]: Analyzing trace with hash -1000663725, now seen corresponding path program 1 times
[2023-12-20 22:02:59,181 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 22:02:59,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067827243]
[2023-12-20 22:02:59,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 22:02:59,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 22:02:59,223 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 22:02:59,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174504465]
[2023-12-20 22:02:59,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 22:02:59,223 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 22:02:59,224 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 22:02:59,225 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 22:02:59,231 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 22:02:59,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 22:02:59,378 INFO  L262         TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 48 conjunts are in the unsatisfiable core
[2023-12-20 22:02:59,383 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 22:03:00,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 479 proven. 183 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2023-12-20 22:03:00,601 INFO  L327         TraceCheckSpWp]: Computing backward predicates...