/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 21:24:51,315 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 21:24:51,386 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 21:24:51,389 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 21:24:51,390 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 21:24:51,412 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 21:24:51,413 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 21:24:51,413 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 21:24:51,414 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 21:24:51,417 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 21:24:51,417 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 21:24:51,417 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 21:24:51,418 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 21:24:51,419 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 21:24:51,419 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 21:24:51,419 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 21:24:51,419 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 21:24:51,419 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 21:24:51,419 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 21:24:51,420 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 21:24:51,420 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 21:24:51,420 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 21:24:51,420 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 21:24:51,420 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 21:24:51,421 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 21:24:51,421 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 21:24:51,421 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 21:24:51,421 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 21:24:51,422 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 21:24:51,422 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 21:24:51,422 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 21:24:51,423 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 21:24:51,423 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 21:24:51,423 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 21:24:51,423 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 21:24:51,423 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 21:24:51,423 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 21:24:51,423 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 21:24:51,424 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 21:24:51,424 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 21:24:51,424 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 21:24:51,424 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 21:24:51,424 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 21:24:51,424 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 21:24:51,568 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 21:24:51,580 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 21:24:51,582 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 21:24:51,583 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 21:24:51,583 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 21:24:51,584 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i
[2023-12-20 21:24:52,525 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 21:24:52,718 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 21:24:52,719 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i
[2023-12-20 21:24:52,742 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad529d9f0/9eb74d56b8eb4fe7969bfaa29d5befca/FLAG3dae83e74
[2023-12-20 21:24:52,758 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad529d9f0/9eb74d56b8eb4fe7969bfaa29d5befca
[2023-12-20 21:24:52,760 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 21:24:52,761 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 21:24:52,763 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 21:24:52,763 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 21:24:52,766 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 21:24:52,766 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:24:52" (1/1) ...
[2023-12-20 21:24:52,767 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519dddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:52, skipping insertion in model container
[2023-12-20 21:24:52,767 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:24:52" (1/1) ...
[2023-12-20 21:24:52,800 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 21:24:52,919 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932]
[2023-12-20 21:24:52,990 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 21:24:53,002 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 21:24:53,014 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932]
[2023-12-20 21:24:53,047 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 21:24:53,066 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 21:24:53,066 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53 WrapperNode
[2023-12-20 21:24:53,066 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 21:24:53,067 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 21:24:53,067 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 21:24:53,067 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 21:24:53,071 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,086 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,116 INFO  L138                Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186
[2023-12-20 21:24:53,116 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 21:24:53,117 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 21:24:53,117 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 21:24:53,117 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 21:24:53,124 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,124 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,128 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,142 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 21:24:53,142 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,142 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,149 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,151 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,153 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,154 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,157 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 21:24:53,158 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 21:24:53,158 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 21:24:53,158 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 21:24:53,158 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (1/1) ...
[2023-12-20 21:24:53,163 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 21:24:53,173 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:24:53,193 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 21:24:53,213 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 21:24:53,213 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-20 21:24:53,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-20 21:24:53,213 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 21:24:53,213 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 21:24:53,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 21:24:53,209 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 21:24:53,292 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 21:24:53,295 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 21:24:53,585 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 21:24:53,618 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 21:24:53,619 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 21:24:53,619 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:24:53 BoogieIcfgContainer
[2023-12-20 21:24:53,619 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 21:24:53,620 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 21:24:53,620 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 21:24:53,622 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 21:24:53,623 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:24:52" (1/3) ...
[2023-12-20 21:24:53,623 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aee0885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:24:53, skipping insertion in model container
[2023-12-20 21:24:53,623 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:24:53" (2/3) ...
[2023-12-20 21:24:53,623 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aee0885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:24:53, skipping insertion in model container
[2023-12-20 21:24:53,623 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:24:53" (3/3) ...
[2023-12-20 21:24:53,624 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i
[2023-12-20 21:24:53,634 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 21:24:53,635 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 21:24:53,670 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 21:24:53,674 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;@45b9281d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 21:24:53,675 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 21:24:53,678 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-20 21:24:53,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-20 21:24:53,689 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:24:53,690 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:53,690 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:24:53,693 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:24:53,694 INFO  L85        PathProgramCache]: Analyzing trace with hash 386299767, now seen corresponding path program 1 times
[2023-12-20 21:24:53,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:24:53,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815049167]
[2023-12-20 21:24:53,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:53,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:24:53,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:24:53,854 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:24:53,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815049167]
[2023-12-20 21:24:53,855 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-20 21:24:53,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812870449]
[2023-12-20 21:24:53,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:53,856 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:53,856 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:24:53,862 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 21:24:53,884 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 21:24:53,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:24:53,993 INFO  L262         TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-20 21:24:53,998 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:24:54,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2023-12-20 21:24:54,024 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:24:54,024 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812870449] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:24:54,024 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:24:54,024 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 21:24:54,026 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936509538]
[2023-12-20 21:24:54,026 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:24:54,029 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 21:24:54,029 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:24:54,047 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 21:24:54,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 21:24:54,050 INFO  L87              Difference]: Start difference. First operand  has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-20 21:24:54,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:24:54,089 INFO  L93              Difference]: Finished difference Result 133 states and 238 transitions.
[2023-12-20 21:24:54,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 21:24:54,091 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133
[2023-12-20 21:24:54,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:24:54,097 INFO  L225             Difference]: With dead ends: 133
[2023-12-20 21:24:54,097 INFO  L226             Difference]: Without dead ends: 66
[2023-12-20 21:24:54,100 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 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 21:24:54,102 INFO  L413           NwaCegarLoop]: 102 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, 102 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 21:24:54,103 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 21:24:54,114 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2023-12-20 21:24:54,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2023-12-20 21:24:54,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-20 21:24:54,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 105 transitions.
[2023-12-20 21:24:54,142 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 105 transitions. Word has length 133
[2023-12-20 21:24:54,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:24:54,143 INFO  L495      AbstractCegarLoop]: Abstraction has 66 states and 105 transitions.
[2023-12-20 21:24:54,143 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-20 21:24:54,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 105 transitions.
[2023-12-20 21:24:54,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-20 21:24:54,146 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:24:54,148 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:54,154 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-20 21:24:54,354 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 21:24:54,354 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:24:54,356 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:24:54,356 INFO  L85        PathProgramCache]: Analyzing trace with hash 1968567731, now seen corresponding path program 1 times
[2023-12-20 21:24:54,356 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:24:54,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2270121]
[2023-12-20 21:24:54,356 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:54,357 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:24:54,428 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:24:54,428 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083653705]
[2023-12-20 21:24:54,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:54,428 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:54,428 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:24:54,439 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 21:24:54,441 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 21:24:54,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:24:54,552 INFO  L262         TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-20 21:24:54,587 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:24:54,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-20 21:24:54,788 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:24:54,788 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:24:54,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2270121]
[2023-12-20 21:24:54,789 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:24:54,789 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083653705]
[2023-12-20 21:24:54,789 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083653705] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:24:54,789 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:24:54,789 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-20 21:24:54,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878740834]
[2023-12-20 21:24:54,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:24:54,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-20 21:24:54,791 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:24:54,793 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-20 21:24:54,793 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:24:54,793 INFO  L87              Difference]: Start difference. First operand 66 states and 105 transitions. Second operand  has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-20 21:24:54,992 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:24:54,992 INFO  L93              Difference]: Finished difference Result 197 states and 312 transitions.
[2023-12-20 21:24:54,993 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-20 21:24:54,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 133
[2023-12-20 21:24:54,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:24:54,998 INFO  L225             Difference]: With dead ends: 197
[2023-12-20 21:24:54,998 INFO  L226             Difference]: Without dead ends: 132
[2023-12-20 21:24:55,001 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-20 21:24:55,003 INFO  L413           NwaCegarLoop]: 170 mSDtfsCounter, 103 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 21:24:55,003 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 350 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 21:24:55,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2023-12-20 21:24:55,018 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 68.
[2023-12-20 21:24:55,018 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-20 21:24:55,019 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 107 transitions.
[2023-12-20 21:24:55,020 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 107 transitions. Word has length 133
[2023-12-20 21:24:55,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:24:55,021 INFO  L495      AbstractCegarLoop]: Abstraction has 68 states and 107 transitions.
[2023-12-20 21:24:55,021 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-20 21:24:55,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 107 transitions.
[2023-12-20 21:24:55,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2023-12-20 21:24:55,025 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:24:55,025 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:55,034 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 21:24:55,234 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 21:24:55,234 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:24:55,236 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:24:55,236 INFO  L85        PathProgramCache]: Analyzing trace with hash -2057178225, now seen corresponding path program 1 times
[2023-12-20 21:24:55,236 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:24:55,236 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037402300]
[2023-12-20 21:24:55,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:55,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:24:55,277 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:24:55,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259763854]
[2023-12-20 21:24:55,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:55,278 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:55,278 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:24:55,290 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 21:24:55,300 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 21:24:55,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:24:55,381 INFO  L262         TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-20 21:24:55,387 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:24:55,684 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-20 21:24:55,685 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:24:55,685 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:24:55,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037402300]
[2023-12-20 21:24:55,685 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:24:55,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259763854]
[2023-12-20 21:24:55,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259763854] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:24:55,685 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:24:55,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-20 21:24:55,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189982975]
[2023-12-20 21:24:55,685 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:24:55,686 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-20 21:24:55,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:24:55,686 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-20 21:24:55,686 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:24:55,687 INFO  L87              Difference]: Start difference. First operand 68 states and 107 transitions. Second operand  has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-20 21:24:55,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:24:55,721 INFO  L93              Difference]: Finished difference Result 222 states and 348 transitions.
[2023-12-20 21:24:55,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-20 21:24:55,721 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 134
[2023-12-20 21:24:55,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:24:55,722 INFO  L225             Difference]: With dead ends: 222
[2023-12-20 21:24:55,722 INFO  L226             Difference]: Without dead ends: 155
[2023-12-20 21:24:55,723 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:24:55,723 INFO  L413           NwaCegarLoop]: 100 mSDtfsCounter, 63 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 21:24:55,736 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 395 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 21:24:55,737 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2023-12-20 21:24:55,748 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135.
[2023-12-20 21:24:55,749 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 135 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 92 states have internal predecessors, (133), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-20 21:24:55,750 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 213 transitions.
[2023-12-20 21:24:55,750 INFO  L78                 Accepts]: Start accepts. Automaton has 135 states and 213 transitions. Word has length 134
[2023-12-20 21:24:55,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:24:55,750 INFO  L495      AbstractCegarLoop]: Abstraction has 135 states and 213 transitions.
[2023-12-20 21:24:55,750 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-20 21:24:55,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 135 states and 213 transitions.
[2023-12-20 21:24:55,751 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-20 21:24:55,751 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:24:55,751 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:55,757 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-20 21:24:55,957 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:55,957 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:24:55,958 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:24:55,958 INFO  L85        PathProgramCache]: Analyzing trace with hash 1450627723, now seen corresponding path program 1 times
[2023-12-20 21:24:55,958 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:24:55,958 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768001421]
[2023-12-20 21:24:55,958 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:55,958 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:24:55,979 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:24:55,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375254622]
[2023-12-20 21:24:55,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:55,979 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:55,979 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:24:55,980 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 21:24:55,982 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-20 21:24:56,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:24:56,099 INFO  L262         TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-20 21:24:56,101 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:24:56,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-20 21:24:56,803 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-20 21:24:56,803 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:24:56,803 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768001421]
[2023-12-20 21:24:56,803 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:24:56,803 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375254622]
[2023-12-20 21:24:56,803 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375254622] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 21:24:56,804 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 21:24:56,804 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-20 21:24:56,804 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565042376]
[2023-12-20 21:24:56,804 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 21:24:56,805 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-20 21:24:56,805 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:24:56,805 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-20 21:24:56,806 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-20 21:24:56,806 INFO  L87              Difference]: Start difference. First operand 135 states and 213 transitions. Second operand  has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-20 21:24:56,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:24:56,925 INFO  L93              Difference]: Finished difference Result 355 states and 557 transitions.
[2023-12-20 21:24:56,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-20 21:24:56,925 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135
[2023-12-20 21:24:56,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:24:56,927 INFO  L225             Difference]: With dead ends: 355
[2023-12-20 21:24:56,927 INFO  L226             Difference]: Without dead ends: 221
[2023-12-20 21:24:56,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-20 21:24:56,931 INFO  L413           NwaCegarLoop]: 96 mSDtfsCounter, 70 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-20 21:24:56,931 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 280 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-20 21:24:56,934 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 221 states.
[2023-12-20 21:24:56,956 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 189.
[2023-12-20 21:24:56,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 189 states, 125 states have (on average 1.424) internal successors, (178), 125 states have internal predecessors, (178), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-12-20 21:24:56,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 298 transitions.
[2023-12-20 21:24:56,957 INFO  L78                 Accepts]: Start accepts. Automaton has 189 states and 298 transitions. Word has length 135
[2023-12-20 21:24:56,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:24:56,958 INFO  L495      AbstractCegarLoop]: Abstraction has 189 states and 298 transitions.
[2023-12-20 21:24:56,958 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-20 21:24:56,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 189 states and 298 transitions.
[2023-12-20 21:24:56,959 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-20 21:24:56,959 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:24:56,959 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:56,968 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-20 21:24:57,164 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:57,164 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:24:57,165 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:24:57,165 INFO  L85        PathProgramCache]: Analyzing trace with hash 749563145, now seen corresponding path program 1 times
[2023-12-20 21:24:57,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:24:57,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871976286]
[2023-12-20 21:24:57,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:57,165 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:24:57,183 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:24:57,183 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966869663]
[2023-12-20 21:24:57,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:24:57,183 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:24:57,183 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:24:57,204 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 21:24:57,220 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-20 21:24:57,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:24:57,480 INFO  L262         TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-12-20 21:24:57,483 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:24:58,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 159 proven. 51 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked.
[2023-12-20 21:24:58,393 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-20 21:25:29,690 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 21:25:29,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871976286]
[2023-12-20 21:25:29,691 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-20 21:25:29,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966869663]
[2023-12-20 21:25:29,692 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [966869663] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-20 21:25:29,695 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2023-12-20 21:25:29,695 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2023-12-20 21:25:29,698 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121483754]
[2023-12-20 21:25:29,698 INFO  L85    oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2023-12-20 21:25:29,698 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-20 21:25:29,698 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 21:25:29,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-20 21:25:29,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=317, Unknown=4, NotChecked=0, Total=380
[2023-12-20 21:25:29,699 INFO  L87              Difference]: Start difference. First operand 189 states and 298 transitions. Second operand  has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-20 21:25:31,193 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 21:25:31,193 INFO  L93              Difference]: Finished difference Result 377 states and 579 transitions.
[2023-12-20 21:25:31,194 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-12-20 21:25:31,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 135
[2023-12-20 21:25:31,195 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 21:25:31,196 INFO  L225             Difference]: With dead ends: 377
[2023-12-20 21:25:31,196 INFO  L226             Difference]: Without dead ends: 243
[2023-12-20 21:25:31,197 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=224, Invalid=894, Unknown=4, NotChecked=0, Total=1122
[2023-12-20 21:25:31,197 INFO  L413           NwaCegarLoop]: 56 mSDtfsCounter, 192 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-20 21:25:31,197 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 447 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-20 21:25:31,198 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 243 states.
[2023-12-20 21:25:31,212 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215.
[2023-12-20 21:25:31,214 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 215 states, 150 states have (on average 1.42) internal successors, (213), 150 states have internal predecessors, (213), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-12-20 21:25:31,215 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 333 transitions.
[2023-12-20 21:25:31,215 INFO  L78                 Accepts]: Start accepts. Automaton has 215 states and 333 transitions. Word has length 135
[2023-12-20 21:25:31,216 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 21:25:31,216 INFO  L495      AbstractCegarLoop]: Abstraction has 215 states and 333 transitions.
[2023-12-20 21:25:31,216 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-20 21:25:31,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 215 states and 333 transitions.
[2023-12-20 21:25:31,217 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-20 21:25:31,217 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 21:25:31,217 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:31,241 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-20 21:25:31,417 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:25:31,418 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 21:25:31,418 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 21:25:31,418 INFO  L85        PathProgramCache]: Analyzing trace with hash 749622727, now seen corresponding path program 1 times
[2023-12-20 21:25:31,418 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 21:25:31,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881378837]
[2023-12-20 21:25:31,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:25:31,419 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 21:25:31,434 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-20 21:25:31,434 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043296191]
[2023-12-20 21:25:31,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 21:25:31,434 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-20 21:25:31,434 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 21:25:31,452 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-20 21:25:31,453 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-20 21:25:32,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 21:25:32,315 INFO  L262         TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 80 conjunts are in the unsatisfiable core
[2023-12-20 21:25:32,319 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-20 21:25:44,183 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 406 proven. 186 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked.
[2023-12-20 21:25:44,184 INFO  L327         TraceCheckSpWp]: Computing backward predicates...