/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array27_pattern.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-15 17:17:41,310 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-15 17:17:41,367 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-15 17:17:41,369 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-15 17:17:41,370 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-15 17:17:41,382 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-15 17:17:41,382 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-15 17:17:41,382 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-15 17:17:41,383 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-15 17:17:41,383 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-15 17:17:41,383 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-15 17:17:41,383 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-15 17:17:41,384 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-15 17:17:41,384 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-15 17:17:41,384 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-15 17:17:41,384 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-15 17:17:41,385 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-15 17:17:41,385 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-15 17:17:41,385 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-15 17:17:41,385 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-15 17:17:41,385 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-15 17:17:41,388 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-15 17:17:41,388 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-15 17:17:41,389 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-15 17:17:41,389 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-15 17:17:41,389 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-15 17:17:41,389 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-15 17:17:41,389 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-15 17:17:41,389 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-15 17:17:41,390 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-15 17:17:41,390 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-15 17:17:41,390 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-15 17:17:41,390 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-15 17:17:41,390 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-15 17:17:41,391 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-15 17:17:41,391 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-15 17:17:41,391 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-15 17:17:41,391 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-15 17:17:41,391 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-15 17:17:41,392 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-15 17:17:41,392 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-15 17:17:41,394 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-15 17:17:41,395 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-15 17:17:41,395 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-15 17:17:41,577 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-15 17:17:41,601 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-15 17:17:41,603 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-15 17:17:41,604 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-15 17:17:41,604 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-15 17:17:41,605 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array27_pattern.c
[2023-12-15 17:17:42,724 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-15 17:17:42,881 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-15 17:17:42,882 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c
[2023-12-15 17:17:42,887 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dd8e134/6cfe6a9fa60449c3a372ceddece9d327/FLAG4dbfb5548
[2023-12-15 17:17:42,900 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dd8e134/6cfe6a9fa60449c3a372ceddece9d327
[2023-12-15 17:17:42,902 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-15 17:17:42,903 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-15 17:17:42,905 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-15 17:17:42,905 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-15 17:17:42,908 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-15 17:17:42,908 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:17:42" (1/1) ...
[2023-12-15 17:17:42,909 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6c12b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:42, skipping insertion in model container
[2023-12-15 17:17:42,909 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:17:42" (1/1) ...
[2023-12-15 17:17:42,926 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-15 17:17:43,034 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c[1253,1266]
[2023-12-15 17:17:43,055 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-15 17:17:43,061 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-15 17:17:43,070 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c[1253,1266]
[2023-12-15 17:17:43,083 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-15 17:17:43,094 INFO  L206         MainTranslator]: Completed translation
[2023-12-15 17:17:43,095 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43 WrapperNode
[2023-12-15 17:17:43,096 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-15 17:17:43,097 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-15 17:17:43,097 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-15 17:17:43,097 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-15 17:17:43,101 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,106 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,122 INFO  L138                Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71
[2023-12-15 17:17:43,122 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-15 17:17:43,123 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-15 17:17:43,123 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-15 17:17:43,123 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-15 17:17:43,130 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,130 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,137 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,145 INFO  L175           MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2023-12-15 17:17:43,146 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,146 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,148 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,150 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,151 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,151 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,153 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-15 17:17:43,153 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-15 17:17:43,153 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-15 17:17:43,153 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-15 17:17:43,154 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (1/1) ...
[2023-12-15 17:17:43,163 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-15 17:17:43,172 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:43,195 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)
[2023-12-15 17:17:43,208 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
[2023-12-15 17:17:43,218 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-15 17:17:43,219 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2023-12-15 17:17:43,219 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-12-15 17:17:43,262 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-15 17:17:43,264 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-15 17:17:43,431 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-15 17:17:43,451 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-15 17:17:43,451 INFO  L309             CfgBuilder]: Removed 4 assume(true) statements.
[2023-12-15 17:17:43,451 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:17:43 BoogieIcfgContainer
[2023-12-15 17:17:43,451 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-15 17:17:43,453 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-15 17:17:43,453 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-15 17:17:43,455 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-15 17:17:43,455 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:17:42" (1/3) ...
[2023-12-15 17:17:43,455 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b1856a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:17:43, skipping insertion in model container
[2023-12-15 17:17:43,455 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:17:43" (2/3) ...
[2023-12-15 17:17:43,456 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b1856a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:17:43, skipping insertion in model container
[2023-12-15 17:17:43,456 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:17:43" (3/3) ...
[2023-12-15 17:17:43,456 INFO  L112   eAbstractionObserver]: Analyzing ICFG array27_pattern.c
[2023-12-15 17:17:43,467 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-15 17:17:43,467 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-15 17:17:43,492 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-15 17:17:43,496 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;@74fd4a30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-15 17:17:43,496 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-15 17:17:43,498 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:43,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-12-15 17:17:43,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:43,502 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:43,503 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:43,508 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:43,508 INFO  L85        PathProgramCache]: Analyzing trace with hash 77099514, now seen corresponding path program 1 times
[2023-12-15 17:17:43,515 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:43,515 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92789129]
[2023-12-15 17:17:43,515 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:43,515 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:43,568 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:43,582 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:43,583 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92789129]
[2023-12-15 17:17:43,583 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-12-15 17:17:43,584 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222842130]
[2023-12-15 17:17:43,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:43,584 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:43,584 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:43,593 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)
[2023-12-15 17:17:43,596 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-15 17:17:43,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:43,642 INFO  L262         TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-15 17:17:43,644 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:43,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-15 17:17:43,655 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-15 17:17:43,656 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [222842130] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-15 17:17:43,656 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-15 17:17:43,656 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-15 17:17:43,657 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087444905]
[2023-12-15 17:17:43,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-15 17:17:43,660 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-15 17:17:43,661 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:43,676 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-15 17:17:43,677 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-15 17:17:43,678 INFO  L87              Difference]: Start difference. First operand  has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:43,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:43,691 INFO  L93              Difference]: Finished difference Result 34 states and 53 transitions.
[2023-12-15 17:17:43,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-15 17:17:43,693 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2023-12-15 17:17:43,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:43,697 INFO  L225             Difference]: With dead ends: 34
[2023-12-15 17:17:43,697 INFO  L226             Difference]: Without dead ends: 16
[2023-12-15 17:17:43,699 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-15 17:17:43,701 INFO  L413           NwaCegarLoop]: 19 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, 19 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
[2023-12-15 17:17:43,702 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:17:43,711 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2023-12-15 17:17:43,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2023-12-15 17:17:43,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:43,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions.
[2023-12-15 17:17:43,719 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9
[2023-12-15 17:17:43,719 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:43,719 INFO  L495      AbstractCegarLoop]: Abstraction has 16 states and 20 transitions.
[2023-12-15 17:17:43,720 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:43,720 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions.
[2023-12-15 17:17:43,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-12-15 17:17:43,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:43,720 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:43,732 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-15 17:17:43,924 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
[2023-12-15 17:17:43,925 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:43,925 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:43,925 INFO  L85        PathProgramCache]: Analyzing trace with hash -1391253823, now seen corresponding path program 1 times
[2023-12-15 17:17:43,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:43,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138603388]
[2023-12-15 17:17:43,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:43,926 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:43,937 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:43,938 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164586747]
[2023-12-15 17:17:43,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:43,938 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:43,938 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:43,939 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)
[2023-12-15 17:17:43,942 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-15 17:17:43,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:43,977 INFO  L262         TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-15 17:17:43,978 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:44,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-15 17:17:44,044 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-15 17:17:44,044 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:44,044 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138603388]
[2023-12-15 17:17:44,044 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:44,044 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164586747]
[2023-12-15 17:17:44,044 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164586747] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-15 17:17:44,044 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-15 17:17:44,045 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-15 17:17:44,045 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348916918]
[2023-12-15 17:17:44,045 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-15 17:17:44,045 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-15 17:17:44,045 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:44,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-15 17:17:44,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-15 17:17:44,048 INFO  L87              Difference]: Start difference. First operand 16 states and 20 transitions. Second operand  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:44,109 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:44,109 INFO  L93              Difference]: Finished difference Result 32 states and 42 transitions.
[2023-12-15 17:17:44,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-15 17:17:44,110 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2023-12-15 17:17:44,110 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:44,111 INFO  L225             Difference]: With dead ends: 32
[2023-12-15 17:17:44,111 INFO  L226             Difference]: Without dead ends: 24
[2023-12-15 17:17:44,112 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-15 17:17:44,113 INFO  L413           NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:44,114 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 11 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:17:44,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2023-12-15 17:17:44,122 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18.
[2023-12-15 17:17:44,123 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:44,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions.
[2023-12-15 17:17:44,124 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9
[2023-12-15 17:17:44,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:44,124 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 22 transitions.
[2023-12-15 17:17:44,124 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:44,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions.
[2023-12-15 17:17:44,125 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2023-12-15 17:17:44,125 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:44,125 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:44,129 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-15 17:17:44,329 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
[2023-12-15 17:17:44,330 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:44,330 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:44,330 INFO  L85        PathProgramCache]: Analyzing trace with hash 1398282665, now seen corresponding path program 1 times
[2023-12-15 17:17:44,331 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:44,331 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284349001]
[2023-12-15 17:17:44,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:44,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:44,352 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:44,352 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252698229]
[2023-12-15 17:17:44,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:44,353 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:44,353 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:44,359 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)
[2023-12-15 17:17:44,361 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-15 17:17:44,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:44,406 INFO  L262         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-15 17:17:44,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:44,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:17:44,430 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-15 17:17:44,430 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:44,430 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284349001]
[2023-12-15 17:17:44,430 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:44,430 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252698229]
[2023-12-15 17:17:44,430 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252698229] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-15 17:17:44,431 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-15 17:17:44,431 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-15 17:17:44,431 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362278367]
[2023-12-15 17:17:44,431 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-15 17:17:44,432 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-15 17:17:44,432 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:44,433 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-15 17:17:44,433 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-15 17:17:44,433 INFO  L87              Difference]: Start difference. First operand 18 states and 22 transitions. Second operand  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:44,477 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:44,477 INFO  L93              Difference]: Finished difference Result 36 states and 47 transitions.
[2023-12-15 17:17:44,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-15 17:17:44,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2023-12-15 17:17:44,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:44,478 INFO  L225             Difference]: With dead ends: 36
[2023-12-15 17:17:44,478 INFO  L226             Difference]: Without dead ends: 22
[2023-12-15 17:17:44,478 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-15 17:17:44,480 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:44,484 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:17:44,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2023-12-15 17:17:44,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20.
[2023-12-15 17:17:44,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:44,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions.
[2023-12-15 17:17:44,492 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15
[2023-12-15 17:17:44,492 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:44,492 INFO  L495      AbstractCegarLoop]: Abstraction has 20 states and 24 transitions.
[2023-12-15 17:17:44,493 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:44,493 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions.
[2023-12-15 17:17:44,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2023-12-15 17:17:44,494 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:44,494 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:44,501 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-15 17:17:44,698 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
[2023-12-15 17:17:44,699 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:44,699 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:44,699 INFO  L85        PathProgramCache]: Analyzing trace with hash -1830707515, now seen corresponding path program 1 times
[2023-12-15 17:17:44,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:44,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671627890]
[2023-12-15 17:17:44,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:44,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:44,724 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:44,724 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946364564]
[2023-12-15 17:17:44,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:44,725 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:44,725 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:44,726 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)
[2023-12-15 17:17:44,730 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-15 17:17:44,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:44,785 INFO  L262         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core
[2023-12-15 17:17:44,789 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:44,921 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-12-15 17:17:45,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-15 17:17:45,056 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:17:45,227 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33
[2023-12-15 17:17:45,231 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53
[2023-12-15 17:17:45,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-15 17:17:45,310 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:45,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671627890]
[2023-12-15 17:17:45,310 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:45,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946364564]
[2023-12-15 17:17:45,310 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [946364564] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:17:45,310 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:17:45,310 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22
[2023-12-15 17:17:45,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020306866]
[2023-12-15 17:17:45,310 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:17:45,311 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-12-15 17:17:45,311 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:45,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-12-15 17:17:45,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462
[2023-12-15 17:17:45,312 INFO  L87              Difference]: Start difference. First operand 20 states and 24 transitions. Second operand  has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:46,232 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:46,232 INFO  L93              Difference]: Finished difference Result 91 states and 118 transitions.
[2023-12-15 17:17:46,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2023-12-15 17:17:46,233 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2023-12-15 17:17:46,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:46,234 INFO  L225             Difference]: With dead ends: 91
[2023-12-15 17:17:46,234 INFO  L226             Difference]: Without dead ends: 71
[2023-12-15 17:17:46,235 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=480, Invalid=1682, Unknown=0, NotChecked=0, Total=2162
[2023-12-15 17:17:46,236 INFO  L413           NwaCegarLoop]: 3 mSDtfsCounter, 167 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:46,236 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 37 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-15 17:17:46,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2023-12-15 17:17:46,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53.
[2023-12-15 17:17:46,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 53 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:46,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions.
[2023-12-15 17:17:46,252 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 19
[2023-12-15 17:17:46,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:46,252 INFO  L495      AbstractCegarLoop]: Abstraction has 53 states and 71 transitions.
[2023-12-15 17:17:46,253 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:46,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions.
[2023-12-15 17:17:46,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-12-15 17:17:46,253 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:46,253 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:46,261 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-15 17:17:46,458 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
[2023-12-15 17:17:46,459 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:46,459 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:46,459 INFO  L85        PathProgramCache]: Analyzing trace with hash -1164410710, now seen corresponding path program 2 times
[2023-12-15 17:17:46,459 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:46,459 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126311427]
[2023-12-15 17:17:46,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:46,459 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:46,485 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:46,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359503690]
[2023-12-15 17:17:46,485 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-12-15 17:17:46,485 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:46,485 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:46,497 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)
[2023-12-15 17:17:46,535 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-15 17:17:46,549 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-12-15 17:17:46,551 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:17:46,552 INFO  L262         TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-15 17:17:46,557 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:46,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-15 17:17:46,591 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:17:46,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-15 17:17:46,628 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:46,628 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126311427]
[2023-12-15 17:17:46,628 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:46,628 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359503690]
[2023-12-15 17:17:46,628 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359503690] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:17:46,628 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:17:46,628 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2023-12-15 17:17:46,628 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678115186]
[2023-12-15 17:17:46,628 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:17:46,629 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-15 17:17:46,630 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:46,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-15 17:17:46,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2023-12-15 17:17:46,631 INFO  L87              Difference]: Start difference. First operand 53 states and 71 transitions. Second operand  has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:46,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:46,716 INFO  L93              Difference]: Finished difference Result 154 states and 203 transitions.
[2023-12-15 17:17:46,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-15 17:17:46,717 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2023-12-15 17:17:46,717 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:46,720 INFO  L225             Difference]: With dead ends: 154
[2023-12-15 17:17:46,720 INFO  L226             Difference]: Without dead ends: 98
[2023-12-15 17:17:46,721 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2023-12-15 17:17:46,721 INFO  L413           NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:46,722 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 41 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:17:46,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2023-12-15 17:17:46,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 73.
[2023-12-15 17:17:46,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 73 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:46,749 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions.
[2023-12-15 17:17:46,749 INFO  L78                 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 20
[2023-12-15 17:17:46,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:46,749 INFO  L495      AbstractCegarLoop]: Abstraction has 73 states and 94 transitions.
[2023-12-15 17:17:46,749 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:46,749 INFO  L276                IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions.
[2023-12-15 17:17:46,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2023-12-15 17:17:46,750 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:46,750 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:46,757 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-12-15 17:17:46,954 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
[2023-12-15 17:17:46,955 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:46,955 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:46,955 INFO  L85        PathProgramCache]: Analyzing trace with hash 1647128868, now seen corresponding path program 1 times
[2023-12-15 17:17:46,955 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:46,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747608110]
[2023-12-15 17:17:46,955 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:46,956 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:46,965 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:46,965 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142885287]
[2023-12-15 17:17:46,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:46,966 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:46,967 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:46,968 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)
[2023-12-15 17:17:46,970 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-15 17:17:47,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:47,011 INFO  L262         TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-15 17:17:47,012 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:47,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-15 17:17:47,048 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:17:47,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-15 17:17:47,078 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:47,078 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747608110]
[2023-12-15 17:17:47,078 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:47,078 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142885287]
[2023-12-15 17:17:47,078 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142885287] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:17:47,078 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:17:47,078 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2023-12-15 17:17:47,078 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585332298]
[2023-12-15 17:17:47,078 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:17:47,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-15 17:17:47,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:47,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-15 17:17:47,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2023-12-15 17:17:47,079 INFO  L87              Difference]: Start difference. First operand 73 states and 94 transitions. Second operand  has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:47,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:47,255 INFO  L93              Difference]: Finished difference Result 165 states and 219 transitions.
[2023-12-15 17:17:47,256 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-12-15 17:17:47,256 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2023-12-15 17:17:47,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:47,256 INFO  L225             Difference]: With dead ends: 165
[2023-12-15 17:17:47,256 INFO  L226             Difference]: Without dead ends: 102
[2023-12-15 17:17:47,257 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420
[2023-12-15 17:17:47,257 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:47,257 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 27 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:17:47,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2023-12-15 17:17:47,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 65.
[2023-12-15 17:17:47,275 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 64 states have (on average 1.296875) internal successors, (83), 64 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:47,276 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions.
[2023-12-15 17:17:47,276 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 22
[2023-12-15 17:17:47,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:47,276 INFO  L495      AbstractCegarLoop]: Abstraction has 65 states and 83 transitions.
[2023-12-15 17:17:47,276 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:47,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions.
[2023-12-15 17:17:47,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2023-12-15 17:17:47,277 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:47,277 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:47,281 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-12-15 17:17:47,481 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:47,481 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:47,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:47,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -1175902674, now seen corresponding path program 1 times
[2023-12-15 17:17:47,481 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:47,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744586832]
[2023-12-15 17:17:47,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:47,482 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:47,493 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:47,493 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020690354]
[2023-12-15 17:17:47,493 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:47,493 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:47,493 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:47,507 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:17:47,537 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-15 17:17:47,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:17:47,545 INFO  L262         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-15 17:17:47,547 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:47,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-15 17:17:47,582 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:17:47,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-15 17:17:47,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:47,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744586832]
[2023-12-15 17:17:47,615 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:47,615 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020690354]
[2023-12-15 17:17:47,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020690354] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:17:47,617 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:17:47,617 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2023-12-15 17:17:47,618 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303347219]
[2023-12-15 17:17:47,618 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:17:47,618 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-15 17:17:47,618 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:47,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-15 17:17:47,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2023-12-15 17:17:47,619 INFO  L87              Difference]: Start difference. First operand 65 states and 83 transitions. Second operand  has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:47,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:47,732 INFO  L93              Difference]: Finished difference Result 91 states and 109 transitions.
[2023-12-15 17:17:47,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-15 17:17:47,732 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2023-12-15 17:17:47,732 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:47,733 INFO  L225             Difference]: With dead ends: 91
[2023-12-15 17:17:47,733 INFO  L226             Difference]: Without dead ends: 71
[2023-12-15 17:17:47,733 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2023-12-15 17:17:47,734 INFO  L413           NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:47,734 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 33 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:17:47,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2023-12-15 17:17:47,750 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56.
[2023-12-15 17:17:47,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:47,750 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions.
[2023-12-15 17:17:47,750 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 23
[2023-12-15 17:17:47,751 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:47,751 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 70 transitions.
[2023-12-15 17:17:47,751 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:47,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions.
[2023-12-15 17:17:47,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2023-12-15 17:17:47,754 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:47,754 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:47,758 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-15 17:17:47,957 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:47,958 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:47,958 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:47,958 INFO  L85        PathProgramCache]: Analyzing trace with hash -1961030341, now seen corresponding path program 2 times
[2023-12-15 17:17:47,958 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:47,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030245436]
[2023-12-15 17:17:47,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:47,959 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:47,969 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:47,970 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703549415]
[2023-12-15 17:17:47,970 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-12-15 17:17:47,970 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:47,970 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:47,981 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:17:48,027 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-15 17:17:48,056 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-12-15 17:17:48,056 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:17:48,057 INFO  L262         TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-15 17:17:48,058 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:48,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-15 17:17:48,094 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:17:48,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-12-15 17:17:48,124 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:48,124 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030245436]
[2023-12-15 17:17:48,124 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:48,124 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703549415]
[2023-12-15 17:17:48,124 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [703549415] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:17:48,124 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:17:48,124 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2023-12-15 17:17:48,124 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534659175]
[2023-12-15 17:17:48,124 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:17:48,124 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-15 17:17:48,125 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:48,125 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-15 17:17:48,125 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2023-12-15 17:17:48,125 INFO  L87              Difference]: Start difference. First operand 56 states and 70 transitions. Second operand  has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:48,198 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:17:48,199 INFO  L93              Difference]: Finished difference Result 67 states and 81 transitions.
[2023-12-15 17:17:48,199 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-15 17:17:48,199 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28
[2023-12-15 17:17:48,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:17:48,199 INFO  L225             Difference]: With dead ends: 67
[2023-12-15 17:17:48,199 INFO  L226             Difference]: Without dead ends: 47
[2023-12-15 17:17:48,200 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2023-12-15 17:17:48,201 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:17:48,201 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 28 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:17:48,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2023-12-15 17:17:48,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40.
[2023-12-15 17:17:48,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:48,211 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions.
[2023-12-15 17:17:48,212 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 28
[2023-12-15 17:17:48,212 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:17:48,212 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 49 transitions.
[2023-12-15 17:17:48,212 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:17:48,212 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions.
[2023-12-15 17:17:48,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-12-15 17:17:48,221 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:17:48,221 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:17:48,228 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-15 17:17:48,425 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-12-15 17:17:48,425 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:17:48,426 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:17:48,426 INFO  L85        PathProgramCache]: Analyzing trace with hash -637697851, now seen corresponding path program 3 times
[2023-12-15 17:17:48,426 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:17:48,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327345910]
[2023-12-15 17:17:48,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:17:48,426 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:17:48,433 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:17:48,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294736185]
[2023-12-15 17:17:48,433 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-15 17:17:48,433 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:17:48,433 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:17:48,434 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:17:48,436 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-15 17:17:48,512 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2023-12-15 17:17:48,512 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:17:48,514 INFO  L262         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 68 conjunts are in the unsatisfiable core
[2023-12-15 17:17:48,516 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:17:48,582 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-12-15 17:17:48,651 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2023-12-15 17:17:48,750 INFO  L349             Elim1Store]: treesize reduction 32, result has 49.2 percent of original size
[2023-12-15 17:17:48,751 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 52
[2023-12-15 17:17:48,952 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:48,954 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:48,956 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:48,964 INFO  L349             Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2023-12-15 17:17:48,964 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 71
[2023-12-15 17:17:49,595 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,596 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,596 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,597 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,598 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,599 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,600 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,600 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,601 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,604 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:17:49,612 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:17:49,612 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 44
[2023-12-15 17:17:49,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:17:49,692 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:17:50,704 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48
[2023-12-15 17:17:50,716 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:17:50,716 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 380 treesize of output 340
[2023-12-15 17:17:50,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:17:50,833 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:17:50,834 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327345910]
[2023-12-15 17:17:50,834 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:17:50,834 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294736185]
[2023-12-15 17:17:50,834 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [294736185] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:17:50,834 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:17:50,834 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46
[2023-12-15 17:17:50,834 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250419993]
[2023-12-15 17:17:50,834 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:17:50,834 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 46 states
[2023-12-15 17:17:50,834 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:17:50,835 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2023-12-15 17:17:50,835 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1753, Unknown=0, NotChecked=0, Total=2070
[2023-12-15 17:17:50,835 INFO  L87              Difference]: Start difference. First operand 40 states and 49 transitions. Second operand  has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:14,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:18:14,093 INFO  L93              Difference]: Finished difference Result 258 states and 325 transitions.
[2023-12-15 17:18:14,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. 
[2023-12-15 17:18:14,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2023-12-15 17:18:14,095 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:18:14,097 INFO  L225             Difference]: With dead ends: 258
[2023-12-15 17:18:14,097 INFO  L226             Difference]: Without dead ends: 218
[2023-12-15 17:18:14,127 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16757 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=5074, Invalid=39236, Unknown=0, NotChecked=0, Total=44310
[2023-12-15 17:18:14,128 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 301 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:14,128 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 100 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-12-15 17:18:14,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 218 states.
[2023-12-15 17:18:14,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 137.
[2023-12-15 17:18:14,172 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 137 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 136 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:14,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions.
[2023-12-15 17:18:14,173 INFO  L78                 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 37
[2023-12-15 17:18:14,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:18:14,173 INFO  L495      AbstractCegarLoop]: Abstraction has 137 states and 179 transitions.
[2023-12-15 17:18:14,173 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:14,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions.
[2023-12-15 17:18:14,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-12-15 17:18:14,174 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:18:14,174 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:18:14,178 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-12-15 17:18:14,378 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:14,378 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:18:14,379 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:18:14,379 INFO  L85        PathProgramCache]: Analyzing trace with hash -1455346301, now seen corresponding path program 4 times
[2023-12-15 17:18:14,379 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:18:14,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217130793]
[2023-12-15 17:18:14,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:18:14,379 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:18:14,397 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:18:14,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886046117]
[2023-12-15 17:18:14,398 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-12-15 17:18:14,398 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:14,398 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:18:14,413 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:18:14,451 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-15 17:18:14,478 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-12-15 17:18:14,478 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:18:14,479 INFO  L262         TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-15 17:18:14,480 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:18:14,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-12-15 17:18:14,513 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:18:14,536 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-12-15 17:18:14,536 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:18:14,536 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217130793]
[2023-12-15 17:18:14,536 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:18:14,536 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886046117]
[2023-12-15 17:18:14,536 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [886046117] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:18:14,536 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:18:14,536 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2023-12-15 17:18:14,537 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397777145]
[2023-12-15 17:18:14,537 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:18:14,537 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-15 17:18:14,537 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:18:14,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-15 17:18:14,538 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-12-15 17:18:14,538 INFO  L87              Difference]: Start difference. First operand 137 states and 179 transitions. Second operand  has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:14,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:18:14,654 INFO  L93              Difference]: Finished difference Result 261 states and 338 transitions.
[2023-12-15 17:18:14,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-15 17:18:14,654 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2023-12-15 17:18:14,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:18:14,654 INFO  L225             Difference]: With dead ends: 261
[2023-12-15 17:18:14,655 INFO  L226             Difference]: Without dead ends: 174
[2023-12-15 17:18:14,655 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-12-15 17:18:14,655 INFO  L413           NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:14,655 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 43 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:18:14,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2023-12-15 17:18:14,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151.
[2023-12-15 17:18:14,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 151 states, 150 states have (on average 1.2733333333333334) internal successors, (191), 150 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:14,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 191 transitions.
[2023-12-15 17:18:14,713 INFO  L78                 Accepts]: Start accepts. Automaton has 151 states and 191 transitions. Word has length 37
[2023-12-15 17:18:14,713 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:18:14,713 INFO  L495      AbstractCegarLoop]: Abstraction has 151 states and 191 transitions.
[2023-12-15 17:18:14,713 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:14,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 151 states and 191 transitions.
[2023-12-15 17:18:14,714 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2023-12-15 17:18:14,715 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:18:14,715 INFO  L195           NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:18:14,721 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-15 17:18:14,918 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-15 17:18:14,919 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:18:14,919 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:18:14,919 INFO  L85        PathProgramCache]: Analyzing trace with hash 1459150506, now seen corresponding path program 5 times
[2023-12-15 17:18:14,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:18:14,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986764278]
[2023-12-15 17:18:14,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:18:14,920 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:18:14,926 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:18:14,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237044048]
[2023-12-15 17:18:14,926 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-12-15 17:18:14,927 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:14,927 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:18:14,930 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:18:14,949 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-15 17:18:14,983 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2023-12-15 17:18:14,983 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:18:14,983 INFO  L262         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-15 17:18:14,984 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:18:15,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 31 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:18:15,077 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:18:15,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-12-15 17:18:15,210 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:18:15,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986764278]
[2023-12-15 17:18:15,211 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:18:15,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237044048]
[2023-12-15 17:18:15,211 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [237044048] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:18:15,211 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:18:15,211 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23
[2023-12-15 17:18:15,211 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76014662]
[2023-12-15 17:18:15,211 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:18:15,211 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-12-15 17:18:15,211 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:18:15,212 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-12-15 17:18:15,212 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506
[2023-12-15 17:18:15,212 INFO  L87              Difference]: Start difference. First operand 151 states and 191 transitions. Second operand  has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:16,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:18:16,083 INFO  L93              Difference]: Finished difference Result 470 states and 590 transitions.
[2023-12-15 17:18:16,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. 
[2023-12-15 17:18:16,084 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2023-12-15 17:18:16,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:18:16,085 INFO  L225             Difference]: With dead ends: 470
[2023-12-15 17:18:16,086 INFO  L226             Difference]: Without dead ends: 294
[2023-12-15 17:18:16,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1456, Invalid=4706, Unknown=0, NotChecked=0, Total=6162
[2023-12-15 17:18:16,089 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 157 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:16,089 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 42 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-15 17:18:16,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 294 states.
[2023-12-15 17:18:16,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 222.
[2023-12-15 17:18:16,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 222 states, 221 states have (on average 1.2262443438914028) internal successors, (271), 221 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:16,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 271 transitions.
[2023-12-15 17:18:16,148 INFO  L78                 Accepts]: Start accepts. Automaton has 222 states and 271 transitions. Word has length 38
[2023-12-15 17:18:16,148 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:18:16,148 INFO  L495      AbstractCegarLoop]: Abstraction has 222 states and 271 transitions.
[2023-12-15 17:18:16,148 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:16,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 222 states and 271 transitions.
[2023-12-15 17:18:16,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2023-12-15 17:18:16,149 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:18:16,149 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:18:16,161 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-12-15 17:18:16,351 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-12-15 17:18:16,352 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:18:16,352 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:18:16,352 INFO  L85        PathProgramCache]: Analyzing trace with hash 924752363, now seen corresponding path program 6 times
[2023-12-15 17:18:16,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:18:16,352 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640118062]
[2023-12-15 17:18:16,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:18:16,353 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:18:16,360 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:18:16,361 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820067803]
[2023-12-15 17:18:16,361 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2023-12-15 17:18:16,361 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:16,361 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:18:16,363 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:18:16,367 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-15 17:18:16,404 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2023-12-15 17:18:16,404 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:18:16,404 INFO  L262         TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-15 17:18:16,405 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:18:16,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2023-12-15 17:18:16,579 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:18:16,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2023-12-15 17:18:16,713 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:18:16,713 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640118062]
[2023-12-15 17:18:16,713 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:18:16,713 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820067803]
[2023-12-15 17:18:16,713 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [820067803] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:18:16,713 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:18:16,713 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20
[2023-12-15 17:18:16,713 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276964087]
[2023-12-15 17:18:16,714 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:18:16,714 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2023-12-15 17:18:16,714 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:18:16,714 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2023-12-15 17:18:16,714 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380
[2023-12-15 17:18:16,714 INFO  L87              Difference]: Start difference. First operand 222 states and 271 transitions. Second operand  has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:17,404 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:18:17,404 INFO  L93              Difference]: Finished difference Result 318 states and 384 transitions.
[2023-12-15 17:18:17,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. 
[2023-12-15 17:18:17,404 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41
[2023-12-15 17:18:17,405 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:18:17,405 INFO  L225             Difference]: With dead ends: 318
[2023-12-15 17:18:17,405 INFO  L226             Difference]: Without dead ends: 242
[2023-12-15 17:18:17,406 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=713, Invalid=2479, Unknown=0, NotChecked=0, Total=3192
[2023-12-15 17:18:17,407 INFO  L413           NwaCegarLoop]: 9 mSDtfsCounter, 61 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:17,407 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 44 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:18:17,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 242 states.
[2023-12-15 17:18:17,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 193.
[2023-12-15 17:18:17,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 193 states, 192 states have (on average 1.1614583333333333) internal successors, (223), 192 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:17,451 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 223 transitions.
[2023-12-15 17:18:17,451 INFO  L78                 Accepts]: Start accepts. Automaton has 193 states and 223 transitions. Word has length 41
[2023-12-15 17:18:17,452 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:18:17,452 INFO  L495      AbstractCegarLoop]: Abstraction has 193 states and 223 transitions.
[2023-12-15 17:18:17,452 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:17,452 INFO  L276                IsEmpty]: Start isEmpty. Operand 193 states and 223 transitions.
[2023-12-15 17:18:17,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2023-12-15 17:18:17,452 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:18:17,452 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 6, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:18:17,458 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-15 17:18:17,656 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-12-15 17:18:17,656 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:18:17,657 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:18:17,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 1753201201, now seen corresponding path program 7 times
[2023-12-15 17:18:17,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:18:17,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480814451]
[2023-12-15 17:18:17,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:18:17,657 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:18:17,667 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:18:17,667 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817751070]
[2023-12-15 17:18:17,667 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2023-12-15 17:18:17,668 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:17,668 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:18:17,672 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:18:17,675 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-15 17:18:17,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-15 17:18:17,738 INFO  L262         TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-15 17:18:17,739 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:18:17,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 172 backedges. 23 proven. 58 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2023-12-15 17:18:17,808 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:18:17,884 INFO  L134       CoverageAnalysis]: Checked inductivity of 172 backedges. 11 proven. 70 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2023-12-15 17:18:17,884 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:18:17,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480814451]
[2023-12-15 17:18:17,884 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:18:17,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817751070]
[2023-12-15 17:18:17,884 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817751070] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:18:17,884 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:18:17,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12
[2023-12-15 17:18:17,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147676112]
[2023-12-15 17:18:17,884 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:18:17,885 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-15 17:18:17,885 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:18:17,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-15 17:18:17,885 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2023-12-15 17:18:17,886 INFO  L87              Difference]: Start difference. First operand 193 states and 223 transitions. Second operand  has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:17,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:18:17,996 INFO  L93              Difference]: Finished difference Result 242 states and 280 transitions.
[2023-12-15 17:18:18,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-12-15 17:18:18,004 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56
[2023-12-15 17:18:18,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:18:18,004 INFO  L225             Difference]: With dead ends: 242
[2023-12-15 17:18:18,004 INFO  L226             Difference]: Without dead ends: 142
[2023-12-15 17:18:18,005 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342
[2023-12-15 17:18:18,005 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:18,005 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 28 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-15 17:18:18,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2023-12-15 17:18:18,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 73.
[2023-12-15 17:18:18,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 73 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:18,042 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions.
[2023-12-15 17:18:18,042 INFO  L78                 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 56
[2023-12-15 17:18:18,042 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:18:18,042 INFO  L495      AbstractCegarLoop]: Abstraction has 73 states and 83 transitions.
[2023-12-15 17:18:18,042 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:18,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions.
[2023-12-15 17:18:18,043 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2023-12-15 17:18:18,043 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:18:18,043 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:18:18,049 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-15 17:18:18,247 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-15 17:18:18,247 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:18:18,247 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:18:18,247 INFO  L85        PathProgramCache]: Analyzing trace with hash -1732390210, now seen corresponding path program 8 times
[2023-12-15 17:18:18,247 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:18:18,247 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064096540]
[2023-12-15 17:18:18,247 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:18:18,247 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:18:18,253 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:18:18,254 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086024708]
[2023-12-15 17:18:18,254 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-12-15 17:18:18,254 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:18,254 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:18:18,277 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:18:18,286 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-15 17:18:18,343 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-12-15 17:18:18,343 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:18:18,344 INFO  L262         TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-15 17:18:18,348 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:18:18,426 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2023-12-15 17:18:18,426 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:18:18,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2023-12-15 17:18:18,490 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:18:18,490 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064096540]
[2023-12-15 17:18:18,490 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:18:18,490 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086024708]
[2023-12-15 17:18:18,490 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086024708] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:18:18,490 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:18:18,490 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12
[2023-12-15 17:18:18,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011898291]
[2023-12-15 17:18:18,491 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:18:18,491 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-15 17:18:18,491 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:18:18,491 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-15 17:18:18,491 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2023-12-15 17:18:18,491 INFO  L87              Difference]: Start difference. First operand 73 states and 83 transitions. Second operand  has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:18,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-15 17:18:18,679 INFO  L93              Difference]: Finished difference Result 95 states and 107 transitions.
[2023-12-15 17:18:18,679 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2023-12-15 17:18:18,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57
[2023-12-15 17:18:18,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-15 17:18:18,680 INFO  L225             Difference]: With dead ends: 95
[2023-12-15 17:18:18,680 INFO  L226             Difference]: Without dead ends: 91
[2023-12-15 17:18:18,680 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756
[2023-12-15 17:18:18,681 INFO  L413           NwaCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:18,681 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 15 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-15 17:18:18,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2023-12-15 17:18:18,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79.
[2023-12-15 17:18:18,703 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:18,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions.
[2023-12-15 17:18:18,703 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 57
[2023-12-15 17:18:18,703 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-15 17:18:18,703 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 90 transitions.
[2023-12-15 17:18:18,703 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-15 17:18:18,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions.
[2023-12-15 17:18:18,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2023-12-15 17:18:18,703 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-15 17:18:18,703 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-15 17:18:18,708 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-15 17:18:18,907 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:18,908 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-15 17:18:18,908 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-15 17:18:18,908 INFO  L85        PathProgramCache]: Analyzing trace with hash -1068034807, now seen corresponding path program 9 times
[2023-12-15 17:18:18,908 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-15 17:18:18,908 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276610345]
[2023-12-15 17:18:18,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-15 17:18:18,908 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-15 17:18:18,915 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-15 17:18:18,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592825537]
[2023-12-15 17:18:18,916 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-12-15 17:18:18,916 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-15 17:18:18,916 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-15 17:18:18,917 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-15 17:18:18,932 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-15 17:18:19,459 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s)
[2023-12-15 17:18:19,459 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-12-15 17:18:19,463 WARN  L260         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 130 conjunts are in the unsatisfiable core
[2023-12-15 17:18:19,466 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-15 17:18:19,506 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-12-15 17:18:19,562 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2023-12-15 17:18:19,629 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:18:19,630 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-12-15 17:18:19,719 INFO  L349             Elim1Store]: treesize reduction 48, result has 48.9 percent of original size
[2023-12-15 17:18:19,719 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 70
[2023-12-15 17:18:19,876 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:19,876 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:19,881 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:19,896 INFO  L349             Elim1Store]: treesize reduction 72, result has 17.2 percent of original size
[2023-12-15 17:18:19,896 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 89
[2023-12-15 17:18:20,108 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,111 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,112 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,114 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,115 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,116 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,117 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,121 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,141 INFO  L349             Elim1Store]: treesize reduction 60, result has 20.0 percent of original size
[2023-12-15 17:18:20,142 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 72 treesize of output 83
[2023-12-15 17:18:20,488 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,489 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,491 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,492 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,494 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,495 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,497 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,499 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:20,700 INFO  L349             Elim1Store]: treesize reduction 159, result has 43.0 percent of original size
[2023-12-15 17:18:20,701 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 157
[2023-12-15 17:18:21,493 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,495 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,496 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,497 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,499 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,500 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,501 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,504 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:21,698 INFO  L349             Elim1Store]: treesize reduction 224, result has 34.9 percent of original size
[2023-12-15 17:18:21,699 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 156 treesize of output 217
[2023-12-15 17:18:22,730 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,731 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,734 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,734 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,735 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,736 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,737 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,738 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,739 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,740 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,741 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,742 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,744 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,747 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,747 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,749 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,750 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,754 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:22,830 INFO  L349             Elim1Store]: treesize reduction 143, result has 18.3 percent of original size
[2023-12-15 17:18:22,831 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 187 treesize of output 213
[2023-12-15 17:18:28,798 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,800 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,801 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,802 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,803 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,804 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,806 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,808 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,809 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,810 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,811 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,812 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,813 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,814 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,815 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,816 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,817 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,819 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,820 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,821 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,823 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,824 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,825 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,826 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,826 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,827 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,828 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,828 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,829 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,830 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,833 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,834 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,836 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,837 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,838 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,839 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,840 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,841 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,842 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,843 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,845 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,846 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,846 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,847 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,848 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,850 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,851 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,853 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,854 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,855 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,857 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,858 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,859 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,860 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,861 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,862 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,862 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,863 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,864 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,864 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,865 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,866 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,867 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,867 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,868 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,869 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,870 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,871 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,872 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,872 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,873 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,874 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,875 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,876 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,878 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-15 17:18:28,923 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:18:28,923 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 97 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 191 treesize of output 155
[2023-12-15 17:18:29,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 222 backedges. 13 proven. 208 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:18:29,274 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-15 17:18:32,430 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 104
[2023-12-15 17:18:32,437 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-12-15 17:18:32,437 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3588 treesize of output 3300
[2023-12-15 17:18:32,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-15 17:18:32,662 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-15 17:18:32,662 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276610345]
[2023-12-15 17:18:32,662 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-15 17:18:32,662 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592825537]
[2023-12-15 17:18:32,662 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [592825537] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-15 17:18:32,662 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-15 17:18:32,663 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91
[2023-12-15 17:18:32,663 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577298024]
[2023-12-15 17:18:32,663 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-15 17:18:32,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 91 states
[2023-12-15 17:18:32,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-15 17:18:32,664 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants.
[2023-12-15 17:18:32,664 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1235, Invalid=6955, Unknown=0, NotChecked=0, Total=8190
[2023-12-15 17:18:32,664 INFO  L87              Difference]: Start difference. First operand 79 states and 90 transitions. Second operand  has 91 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 91 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
Received shutdown request...
[2023-12-15 17:18:56,676 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-15 17:18:56,676 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-15 17:18:56,690 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. 
[2023-12-15 17:18:56,692 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5332 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=2577, Invalid=13679, Unknown=0, NotChecked=0, Total=16256
[2023-12-15 17:18:56,692 INFO  L413           NwaCegarLoop]: 1 mSDtfsCounter, 264 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-12-15 17:18:56,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 44 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-12-15 17:18:56,693 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-15 17:18:56,701 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-15 17:18:56,893 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-12-15 17:18:56,894 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (79states) and FLOYD_HOARE automaton (currently 45 states, 91 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-26-5-1 term,while SimplifyDDA2 was simplifying 5 xjuncts wrt. a ∧-22-4-1 context.
[2023-12-15 17:18:56,897 INFO  L445         BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1]
[2023-12-15 17:18:56,899 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-15 17:18:56,900 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:18:56 BoogieIcfgContainer
[2023-12-15 17:18:56,900 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-15 17:18:56,900 INFO  L158              Benchmark]: Toolchain (without parser) took 73997.13ms. Allocated memory was 442.5MB in the beginning and 543.2MB in the end (delta: 100.7MB). Free memory was 387.9MB in the beginning and 199.8MB in the end (delta: 188.1MB). Peak memory consumption was 289.8MB. Max. memory is 8.0GB.
[2023-12-15 17:18:56,900 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 201.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-15 17:18:56,901 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 191.08ms. Allocated memory is still 442.5MB. Free memory was 387.3MB in the beginning and 376.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2023-12-15 17:18:56,901 INFO  L158              Benchmark]: Boogie Procedure Inliner took 25.61ms. Allocated memory is still 442.5MB. Free memory was 376.3MB in the beginning and 374.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2023-12-15 17:18:56,901 INFO  L158              Benchmark]: Boogie Preprocessor took 30.01ms. Allocated memory is still 442.5MB. Free memory was 374.8MB in the beginning and 372.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-12-15 17:18:56,901 INFO  L158              Benchmark]: RCFGBuilder took 298.29ms. Allocated memory is still 442.5MB. Free memory was 372.7MB in the beginning and 360.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
[2023-12-15 17:18:56,901 INFO  L158              Benchmark]: TraceAbstraction took 73446.98ms. Allocated memory was 442.5MB in the beginning and 543.2MB in the end (delta: 100.7MB). Free memory was 359.6MB in the beginning and 199.8MB in the end (delta: 159.8MB). Peak memory consumption was 261.5MB. Max. memory is 8.0GB.
[2023-12-15 17:18:56,902 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 201.5MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 191.08ms. Allocated memory is still 442.5MB. Free memory was 387.3MB in the beginning and 376.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 25.61ms. Allocated memory is still 442.5MB. Free memory was 376.3MB in the beginning and 374.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 30.01ms. Allocated memory is still 442.5MB. Free memory was 374.8MB in the beginning and 372.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 298.29ms. Allocated memory is still 442.5MB. Free memory was 372.7MB in the beginning and 360.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
 * TraceAbstraction took 73446.98ms. Allocated memory was 442.5MB in the beginning and 543.2MB in the end (delta: 100.7MB). Free memory was 359.6MB in the beginning and 199.8MB in the end (delta: 159.8MB). Peak memory consumption was 261.5MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 32]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 32). Cancelled while NwaCegarLoop was constructing difference of abstraction (79states) and FLOYD_HOARE automaton (currently 45 states, 91 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-26-5-1 term,while SimplifyDDA2 was simplifying 5 xjuncts wrt. a ∧-22-4-1 context.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.4s, OverallIterations: 15, TraceHistogramMax: 9, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 50.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1308 SdHoareTripleChecker+Valid, 11.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1308 mSDsluCounter, 525 SdHoareTripleChecker+Invalid, 11.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 408 mSDsCounter, 1036 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5143 IncrementalHoareTripleChecker+Invalid, 6179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1036 mSolverCounterUnsat, 117 mSDtfsCounter, 5143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1275 GetRequests, 630 SyntacticMatches, 20 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26119 ImplicationChecksByTransitivity, 49.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=11, InterpolantAutomatonStates: 419, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 416 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 483 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 888 ConstructedInterpolants, 2 QuantifiedInterpolants, 15047 SizeOfPredicates, 106 NumberOfNonLiveVariables, 1699 ConjunctsInSsa, 316 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 725/1704 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown