/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_operatoramount_amount50_file-98.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-21 01:31:13,585 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-21 01:31:13,623 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-21 01:31:13,626 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-21 01:31:13,627 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-21 01:31:13,641 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-21 01:31:13,641 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-21 01:31:13,642 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-21 01:31:13,642 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-21 01:31:13,642 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-21 01:31:13,642 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-21 01:31:13,643 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-21 01:31:13,643 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-21 01:31:13,643 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-21 01:31:13,644 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-21 01:31:13,644 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-21 01:31:13,644 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-21 01:31:13,644 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-21 01:31:13,645 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-21 01:31:13,645 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-21 01:31:13,645 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-21 01:31:13,645 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-21 01:31:13,645 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-21 01:31:13,646 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-21 01:31:13,646 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-21 01:31:13,646 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-21 01:31:13,646 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-21 01:31:13,646 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-21 01:31:13,647 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-21 01:31:13,647 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-21 01:31:13,647 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-21 01:31:13,647 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-21 01:31:13,647 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 01:31:13,647 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-21 01:31:13,648 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-21 01:31:13,649 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-21 01:31:13,649 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-21 01:31:13,649 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-21 01:31:13,818 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-21 01:31:13,840 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-21 01:31:13,842 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-21 01:31:13,843 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-21 01:31:13,843 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-21 01:31:13,844 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-98.i
[2023-12-21 01:31:14,935 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-21 01:31:15,145 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-21 01:31:15,145 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-98.i
[2023-12-21 01:31:15,154 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677383db0/7ea43884b05b4fb2a72a033ec12e8abf/FLAG4f9428576
[2023-12-21 01:31:15,166 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677383db0/7ea43884b05b4fb2a72a033ec12e8abf
[2023-12-21 01:31:15,169 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-21 01:31:15,170 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-21 01:31:15,176 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-21 01:31:15,177 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-21 01:31:15,180 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-21 01:31:15,181 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,181 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f6da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15, skipping insertion in model container
[2023-12-21 01:31:15,182 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,204 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-21 01:31:15,340 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_operatoramount_amount50_file-98.i[915,928]
[2023-12-21 01:31:15,389 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 01:31:15,399 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-21 01:31:15,408 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_operatoramount_amount50_file-98.i[915,928]
[2023-12-21 01:31:15,431 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 01:31:15,441 INFO  L206         MainTranslator]: Completed translation
[2023-12-21 01:31:15,442 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15 WrapperNode
[2023-12-21 01:31:15,442 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-21 01:31:15,453 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-21 01:31:15,453 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-21 01:31:15,453 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-21 01:31:15,457 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,470 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,501 INFO  L138                Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 152
[2023-12-21 01:31:15,502 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-21 01:31:15,502 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-21 01:31:15,502 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-21 01:31:15,502 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-21 01:31:15,512 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,513 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,522 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,534 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].
[2023-12-21 01:31:15,534 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,535 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,540 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,542 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,543 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,544 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,546 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-21 01:31:15,547 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-21 01:31:15,547 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-21 01:31:15,547 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-21 01:31:15,548 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (1/1) ...
[2023-12-21 01:31:15,551 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 01:31:15,568 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 01:31:15,613 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)
[2023-12-21 01:31:15,631 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
[2023-12-21 01:31:15,635 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-21 01:31:15,636 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-21 01:31:15,636 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-21 01:31:15,636 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-21 01:31:15,637 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-21 01:31:15,637 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-21 01:31:15,701 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-21 01:31:15,703 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-21 01:31:15,924 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-21 01:31:15,971 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-21 01:31:15,971 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-21 01:31:15,972 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:31:15 BoogieIcfgContainer
[2023-12-21 01:31:15,972 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-21 01:31:15,973 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-21 01:31:15,973 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-21 01:31:15,975 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-21 01:31:15,976 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:31:15" (1/3) ...
[2023-12-21 01:31:15,976 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18afff1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:31:15, skipping insertion in model container
[2023-12-21 01:31:15,976 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:15" (2/3) ...
[2023-12-21 01:31:15,976 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18afff1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:31:15, skipping insertion in model container
[2023-12-21 01:31:15,976 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:31:15" (3/3) ...
[2023-12-21 01:31:15,977 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-98.i
[2023-12-21 01:31:15,990 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-21 01:31:15,991 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-21 01:31:16,021 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-21 01:31:16,026 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;@5167308e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-21 01:31:16,026 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-21 01:31:16,029 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-21 01:31:16,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-21 01:31:16,038 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 01:31:16,039 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 01:31:16,039 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 01:31:16,043 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 01:31:16,043 INFO  L85        PathProgramCache]: Analyzing trace with hash 1742275018, now seen corresponding path program 1 times
[2023-12-21 01:31:16,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 01:31:16,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694748573]
[2023-12-21 01:31:16,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:16,050 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 01:31:16,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 01:31:16,221 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 01:31:16,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694748573]
[2023-12-21 01:31:16,222 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-21 01:31:16,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828664232]
[2023-12-21 01:31:16,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:16,222 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 01:31:16,223 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 01:31:16,225 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)
[2023-12-21 01:31:16,232 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-21 01:31:16,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 01:31:16,375 INFO  L262         TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-21 01:31:16,384 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 01:31:16,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked.
[2023-12-21 01:31:16,429 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-21 01:31:16,429 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [828664232] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 01:31:16,429 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 01:31:16,429 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-21 01:31:16,431 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538066075]
[2023-12-21 01:31:16,431 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 01:31:16,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-21 01:31:16,435 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 01:31:16,454 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-21 01:31:16,455 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-21 01:31:16,457 INFO  L87              Difference]: Start difference. First operand  has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-21 01:31:16,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 01:31:16,487 INFO  L93              Difference]: Finished difference Result 119 states and 214 transitions.
[2023-12-21 01:31:16,489 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-21 01:31:16,490 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146
[2023-12-21 01:31:16,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 01:31:16,498 INFO  L225             Difference]: With dead ends: 119
[2023-12-21 01:31:16,498 INFO  L226             Difference]: Without dead ends: 59
[2023-12-21 01:31:16,502 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-21 01:31:16,506 INFO  L413           NwaCegarLoop]: 88 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, 88 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
[2023-12-21 01:31:16,507 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 01:31:16,520 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2023-12-21 01:31:16,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2023-12-21 01:31:16,546 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 59 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-21 01:31:16,547 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 91 transitions.
[2023-12-21 01:31:16,548 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 91 transitions. Word has length 146
[2023-12-21 01:31:16,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 01:31:16,549 INFO  L495      AbstractCegarLoop]: Abstraction has 59 states and 91 transitions.
[2023-12-21 01:31:16,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-21 01:31:16,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 91 transitions.
[2023-12-21 01:31:16,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-21 01:31:16,559 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 01:31:16,559 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 01:31:16,565 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-21 01:31:16,762 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
[2023-12-21 01:31:16,762 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 01:31:16,763 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 01:31:16,763 INFO  L85        PathProgramCache]: Analyzing trace with hash -966136126, now seen corresponding path program 1 times
[2023-12-21 01:31:16,763 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 01:31:16,764 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884970202]
[2023-12-21 01:31:16,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:16,764 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 01:31:16,813 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 01:31:16,816 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102430209]
[2023-12-21 01:31:16,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:16,817 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 01:31:16,817 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 01:31:16,818 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)
[2023-12-21 01:31:16,819 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-21 01:31:16,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 01:31:16,979 INFO  L262         TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-21 01:31:16,982 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 01:31:17,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-21 01:31:17,128 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-21 01:31:17,128 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 01:31:17,129 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884970202]
[2023-12-21 01:31:17,129 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-21 01:31:17,129 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102430209]
[2023-12-21 01:31:17,129 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102430209] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 01:31:17,129 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 01:31:17,129 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-21 01:31:17,130 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470418456]
[2023-12-21 01:31:17,130 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 01:31:17,132 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-21 01:31:17,133 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 01:31:17,134 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-21 01:31:17,134 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-21 01:31:17,134 INFO  L87              Difference]: Start difference. First operand 59 states and 91 transitions. Second operand  has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-21 01:31:17,357 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 01:31:17,358 INFO  L93              Difference]: Finished difference Result 162 states and 251 transitions.
[2023-12-21 01:31:17,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-21 01:31:17,358 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 146
[2023-12-21 01:31:17,361 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 01:31:17,363 INFO  L225             Difference]: With dead ends: 162
[2023-12-21 01:31:17,363 INFO  L226             Difference]: Without dead ends: 104
[2023-12-21 01:31:17,366 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-21 01:31:17,367 INFO  L413           NwaCegarLoop]: 142 mSDtfsCounter, 101 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-21 01:31:17,368 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 384 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-21 01:31:17,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2023-12-21 01:31:17,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59.
[2023-12-21 01:31:17,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 59 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-21 01:31:17,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 90 transitions.
[2023-12-21 01:31:17,389 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 90 transitions. Word has length 146
[2023-12-21 01:31:17,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 01:31:17,392 INFO  L495      AbstractCegarLoop]: Abstraction has 59 states and 90 transitions.
[2023-12-21 01:31:17,392 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-21 01:31:17,392 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 90 transitions.
[2023-12-21 01:31:17,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-21 01:31:17,395 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 01:31:17,395 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 01:31:17,403 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-21 01:31:17,602 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
[2023-12-21 01:31:17,602 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 01:31:17,603 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 01:31:17,603 INFO  L85        PathProgramCache]: Analyzing trace with hash -964289084, now seen corresponding path program 1 times
[2023-12-21 01:31:17,603 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 01:31:17,603 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016978723]
[2023-12-21 01:31:17,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:17,603 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 01:31:17,640 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 01:31:17,641 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717013282]
[2023-12-21 01:31:17,641 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:17,641 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 01:31:17,641 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 01:31:17,646 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)
[2023-12-21 01:31:17,647 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-21 01:31:17,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 01:31:17,845 INFO  L262         TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-21 01:31:17,849 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 01:31:18,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-21 01:31:18,218 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-21 01:31:18,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 01:31:18,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016978723]
[2023-12-21 01:31:18,219 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-21 01:31:18,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717013282]
[2023-12-21 01:31:18,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [717013282] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 01:31:18,219 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 01:31:18,219 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-21 01:31:18,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306538270]
[2023-12-21 01:31:18,219 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 01:31:18,220 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-21 01:31:18,220 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 01:31:18,221 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-21 01:31:18,221 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-12-21 01:31:18,221 INFO  L87              Difference]: Start difference. First operand 59 states and 90 transitions. Second operand  has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-21 01:31:18,897 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 01:31:18,897 INFO  L93              Difference]: Finished difference Result 339 states and 521 transitions.
[2023-12-21 01:31:18,898 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2023-12-21 01:31:18,898 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 146
[2023-12-21 01:31:18,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 01:31:18,901 INFO  L225             Difference]: With dead ends: 339
[2023-12-21 01:31:18,901 INFO  L226             Difference]: Without dead ends: 281
[2023-12-21 01:31:18,902 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210
[2023-12-21 01:31:18,902 INFO  L413           NwaCegarLoop]: 151 mSDtfsCounter, 258 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-21 01:31:18,902 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 614 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-21 01:31:18,903 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2023-12-21 01:31:18,941 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 222.
[2023-12-21 01:31:18,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 222 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 121 states have internal predecessors, (153), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96)
[2023-12-21 01:31:18,946 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 345 transitions.
[2023-12-21 01:31:18,946 INFO  L78                 Accepts]: Start accepts. Automaton has 222 states and 345 transitions. Word has length 146
[2023-12-21 01:31:18,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 01:31:18,947 INFO  L495      AbstractCegarLoop]: Abstraction has 222 states and 345 transitions.
[2023-12-21 01:31:18,947 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-21 01:31:18,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 222 states and 345 transitions.
[2023-12-21 01:31:18,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-12-21 01:31:18,948 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 01:31:18,948 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 01:31:18,956 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-21 01:31:19,154 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
[2023-12-21 01:31:19,155 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 01:31:19,155 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 01:31:19,155 INFO  L85        PathProgramCache]: Analyzing trace with hash -964229502, now seen corresponding path program 1 times
[2023-12-21 01:31:19,156 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 01:31:19,156 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466976874]
[2023-12-21 01:31:19,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:19,156 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 01:31:19,194 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-21 01:31:19,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220208165]
[2023-12-21 01:31:19,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 01:31:19,194 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 01:31:19,194 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 01:31:19,196 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)
[2023-12-21 01:31:19,217 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-21 01:31:19,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 01:31:19,690 INFO  L262         TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 58 conjunts are in the unsatisfiable core
[2023-12-21 01:31:19,695 INFO  L285         TraceCheckSpWp]: Computing forward predicates...