/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sokoban.3.prop1-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 22:12:18,455 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 22:12:18,538 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 22:12:18,543 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 22:12:18,543 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 22:12:18,571 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 22:12:18,571 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 22:12:18,572 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 22:12:18,572 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 22:12:18,576 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 22:12:18,576 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 22:12:18,577 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 22:12:18,577 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 22:12:18,578 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 22:12:18,579 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 22:12:18,579 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 22:12:18,579 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 22:12:18,579 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 22:12:18,579 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 22:12:18,580 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 22:12:18,581 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 22:12:18,581 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 22:12:18,581 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 22:12:18,581 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 22:12:18,582 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 22:12:18,582 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 22:12:18,582 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 22:12:18,582 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 22:12:18,583 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 22:12:18,583 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 22:12:18,584 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 22:12:18,584 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 22:12:18,584 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 22:12:18,584 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 22:12:18,584 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 22:12:18,584 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 22:12:18,585 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 22:12:18,585 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 22:12:18,585 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 22:12:18,585 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 22:12:18,585 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 22:12:18,807 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 22:12:18,829 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 22:12:18,831 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 22:12:18,832 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 22:12:18,832 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 22:12:18,833 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sokoban.3.prop1-func-interl.c
[2023-12-25 22:12:19,950 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 22:12:20,622 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 22:12:20,623 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sokoban.3.prop1-func-interl.c
[2023-12-25 22:12:20,714 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0c1adb3/1e2c9538ae1445c881ad46757a1c12f8/FLAG866298ea4
[2023-12-25 22:12:20,730 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0c1adb3/1e2c9538ae1445c881ad46757a1c12f8
[2023-12-25 22:12:20,733 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 22:12:20,734 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 22:12:20,736 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 22:12:20,736 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 22:12:20,740 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 22:12:20,741 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:12:20" (1/1) ...
[2023-12-25 22:12:20,741 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc83b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:20, skipping insertion in model container
[2023-12-25 22:12:20,741 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:12:20" (1/1) ...
[2023-12-25 22:12:20,963 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 22:12:21,418 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sokoban.3.prop1-func-interl.c[1174,1187]
[2023-12-25 22:12:23,224 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 22:12:23,231 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 22:12:23,240 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sokoban.3.prop1-func-interl.c[1174,1187]
[2023-12-25 22:12:24,467 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 22:12:24,479 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 22:12:24,479 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24 WrapperNode
[2023-12-25 22:12:24,480 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 22:12:24,480 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 22:12:24,481 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 22:12:24,481 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 22:12:24,486 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:24,958 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:28,395 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60390
[2023-12-25 22:12:28,396 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 22:12:28,397 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 22:12:28,397 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 22:12:28,397 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 22:12:28,406 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:28,406 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:29,852 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:30,522 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 22:12:30,523 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:30,523 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:31,553 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:31,702 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:31,964 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:32,141 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:32,993 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 22:12:32,994 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 22:12:32,994 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 22:12:32,995 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 22:12:32,995 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (1/1) ...
[2023-12-25 22:12:33,000 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 22:12:33,025 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:12:33,056 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)
[2023-12-25 22:12:33,516 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
[2023-12-25 22:12:33,546 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 22:12:33,546 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 22:12:33,546 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 22:12:33,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 22:12:36,822 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 22:12:36,824 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 22:13:07,302 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 22:13:08,680 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 22:13:08,680 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 22:13:08,680 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:13:08 BoogieIcfgContainer
[2023-12-25 22:13:08,682 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 22:13:08,684 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 22:13:08,684 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 22:13:08,686 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 22:13:08,687 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:12:20" (1/3) ...
[2023-12-25 22:13:08,687 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1090bf29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:13:08, skipping insertion in model container
[2023-12-25 22:13:08,687 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:12:24" (2/3) ...
[2023-12-25 22:13:08,689 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1090bf29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:13:08, skipping insertion in model container
[2023-12-25 22:13:08,689 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:13:08" (3/3) ...
[2023-12-25 22:13:08,690 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sokoban.3.prop1-func-interl.c
[2023-12-25 22:13:08,703 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 22:13:08,704 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 22:13:08,847 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 22:13:08,853 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;@7b6cff33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 22:13:08,854 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 22:13:08,885 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 9850 states, 9848 states have (on average 1.677497969130788) internal successors, (16520), 9849 states have internal predecessors, (16520), 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)
[2023-12-25 22:13:08,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 457
[2023-12-25 22:13:08,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:08,920 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:13:08,921 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:13:08,927 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:13:08,928 INFO  L85        PathProgramCache]: Analyzing trace with hash -1669219083, now seen corresponding path program 1 times
[2023-12-25 22:13:08,935 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:13:08,935 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61220805]
[2023-12-25 22:13:08,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:08,936 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:13:09,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:13:11,515 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:13:11,515 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:13:11,516 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61220805]
[2023-12-25 22:13:11,516 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61220805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:13:11,516 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:13:11,516 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:13:11,518 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415901149]
[2023-12-25 22:13:11,519 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:13:11,525 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:13:11,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:13:11,555 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:13:11,556 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:11,578 INFO  L87              Difference]: Start difference. First operand  has 9850 states, 9848 states have (on average 1.677497969130788) internal successors, (16520), 9849 states have internal predecessors, (16520), 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 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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)
[2023-12-25 22:13:12,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:13:12,129 INFO  L93              Difference]: Finished difference Result 19057 states and 31971 transitions.
[2023-12-25 22:13:12,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:13:12,132 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 456
[2023-12-25 22:13:12,137 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:13:12,249 INFO  L225             Difference]: With dead ends: 19057
[2023-12-25 22:13:12,249 INFO  L226             Difference]: Without dead ends: 9850
[2023-12-25 22:13:12,265 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:12,268 INFO  L413           NwaCegarLoop]: 16513 mSDtfsCounter, 1 mSDsluCounter, 33021 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49534 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 22:13:12,270 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49534 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 22:13:12,296 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9850 states.
[2023-12-25 22:13:12,469 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 9850.
[2023-12-25 22:13:12,497 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9850 states, 9849 states have (on average 1.6771245811757538) internal successors, (16518), 9849 states have internal predecessors, (16518), 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)
[2023-12-25 22:13:12,532 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 16518 transitions.
[2023-12-25 22:13:12,533 INFO  L78                 Accepts]: Start accepts. Automaton has 9850 states and 16518 transitions. Word has length 456
[2023-12-25 22:13:12,536 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:13:12,536 INFO  L495      AbstractCegarLoop]: Abstraction has 9850 states and 16518 transitions.
[2023-12-25 22:13:12,537 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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)
[2023-12-25 22:13:12,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 9850 states and 16518 transitions.
[2023-12-25 22:13:12,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 458
[2023-12-25 22:13:12,543 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:12,544 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:13:12,544 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 22:13:12,544 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:13:12,545 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:13:12,545 INFO  L85        PathProgramCache]: Analyzing trace with hash -204396779, now seen corresponding path program 1 times
[2023-12-25 22:13:12,545 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:13:12,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771861750]
[2023-12-25 22:13:12,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:12,546 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:13:12,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:13:13,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:13:13,728 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:13:13,728 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771861750]
[2023-12-25 22:13:13,729 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771861750] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:13:13,729 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:13:13,729 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:13:13,729 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85069593]
[2023-12-25 22:13:13,729 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:13:13,732 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:13:13,735 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:13:13,736 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:13:13,736 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:13,737 INFO  L87              Difference]: Start difference. First operand 9850 states and 16518 transitions. Second operand  has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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)
[2023-12-25 22:13:14,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:13:14,287 INFO  L93              Difference]: Finished difference Result 19060 states and 31969 transitions.
[2023-12-25 22:13:14,288 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:13:14,288 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 457
[2023-12-25 22:13:14,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:13:14,321 INFO  L225             Difference]: With dead ends: 19060
[2023-12-25 22:13:14,321 INFO  L226             Difference]: Without dead ends: 9853
[2023-12-25 22:13:14,332 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:14,334 INFO  L413           NwaCegarLoop]: 16513 mSDtfsCounter, 1 mSDsluCounter, 33019 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49532 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 22:13:14,335 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49532 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 22:13:14,349 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9853 states.
[2023-12-25 22:13:14,481 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 9852.
[2023-12-25 22:13:14,497 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9852 states, 9851 states have (on average 1.6769871079078267) internal successors, (16520), 9851 states have internal predecessors, (16520), 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)
[2023-12-25 22:13:14,521 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9852 states to 9852 states and 16520 transitions.
[2023-12-25 22:13:14,522 INFO  L78                 Accepts]: Start accepts. Automaton has 9852 states and 16520 transitions. Word has length 457
[2023-12-25 22:13:14,523 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:13:14,523 INFO  L495      AbstractCegarLoop]: Abstraction has 9852 states and 16520 transitions.
[2023-12-25 22:13:14,523 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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)
[2023-12-25 22:13:14,524 INFO  L276                IsEmpty]: Start isEmpty. Operand 9852 states and 16520 transitions.
[2023-12-25 22:13:14,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 459
[2023-12-25 22:13:14,530 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:14,531 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:13:14,531 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 22:13:14,531 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:13:14,538 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:13:14,539 INFO  L85        PathProgramCache]: Analyzing trace with hash 2041417229, now seen corresponding path program 1 times
[2023-12-25 22:13:14,539 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:13:14,539 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515283603]
[2023-12-25 22:13:14,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:14,539 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:13:14,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:13:15,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:13:15,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:13:15,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515283603]
[2023-12-25 22:13:15,627 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515283603] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:13:15,627 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:13:15,627 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:13:15,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030260808]
[2023-12-25 22:13:15,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:13:15,628 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:13:15,629 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:13:15,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:13:15,631 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:15,632 INFO  L87              Difference]: Start difference. First operand 9852 states and 16520 transitions. Second operand  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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)
[2023-12-25 22:13:16,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:13:16,220 INFO  L93              Difference]: Finished difference Result 28260 states and 47403 transitions.
[2023-12-25 22:13:16,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:13:16,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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 458
[2023-12-25 22:13:16,221 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:13:16,270 INFO  L225             Difference]: With dead ends: 28260
[2023-12-25 22:13:16,271 INFO  L226             Difference]: Without dead ends: 19051
[2023-12-25 22:13:16,287 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:16,290 INFO  L413           NwaCegarLoop]: 16559 mSDtfsCounter, 15431 mSDsluCounter, 33061 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15431 SdHoareTripleChecker+Valid, 49620 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:13:16,291 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15431 Valid, 49620 Invalid, 20 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:13:16,313 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19051 states.
[2023-12-25 22:13:16,489 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19051 to 9854.
[2023-12-25 22:13:16,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9854 states, 9853 states have (on average 1.6768496904496093) internal successors, (16522), 9853 states have internal predecessors, (16522), 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)
[2023-12-25 22:13:16,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9854 states to 9854 states and 16522 transitions.
[2023-12-25 22:13:16,524 INFO  L78                 Accepts]: Start accepts. Automaton has 9854 states and 16522 transitions. Word has length 458
[2023-12-25 22:13:16,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:13:16,525 INFO  L495      AbstractCegarLoop]: Abstraction has 9854 states and 16522 transitions.
[2023-12-25 22:13:16,525 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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)
[2023-12-25 22:13:16,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 9854 states and 16522 transitions.
[2023-12-25 22:13:16,534 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 460
[2023-12-25 22:13:16,535 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:16,539 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:13:16,540 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 22:13:16,540 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:13:16,540 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:13:16,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 457546683, now seen corresponding path program 1 times
[2023-12-25 22:13:16,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:13:16,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516266700]
[2023-12-25 22:13:16,541 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:16,541 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:13:16,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:13:18,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:13:18,113 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:13:18,113 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516266700]
[2023-12-25 22:13:18,113 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516266700] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:13:18,113 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:13:18,113 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:13:18,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713086894]
[2023-12-25 22:13:18,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:13:18,114 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:13:18,114 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:13:18,115 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:13:18,115 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:13:18,115 INFO  L87              Difference]: Start difference. First operand 9854 states and 16522 transitions. Second operand  has 5 states, 5 states have (on average 91.8) internal successors, (459), 4 states have internal predecessors, (459), 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)
[2023-12-25 22:13:27,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:13:27,708 INFO  L93              Difference]: Finished difference Result 28274 states and 47422 transitions.
[2023-12-25 22:13:27,708 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:13:27,709 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 91.8) internal successors, (459), 4 states have internal predecessors, (459), 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 459
[2023-12-25 22:13:27,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:13:27,744 INFO  L225             Difference]: With dead ends: 28274
[2023-12-25 22:13:27,745 INFO  L226             Difference]: Without dead ends: 19063
[2023-12-25 22:13:27,756 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:13:27,757 INFO  L413           NwaCegarLoop]: 13028 mSDtfsCounter, 46956 mSDsluCounter, 26050 mSDsCounter, 0 mSdLazyCounter, 10469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46956 SdHoareTripleChecker+Valid, 39078 SdHoareTripleChecker+Invalid, 10470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:13:27,757 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46956 Valid, 39078 Invalid, 10470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10469 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time]
[2023-12-25 22:13:27,777 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19063 states.
[2023-12-25 22:13:27,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19063 to 9884.
[2023-12-25 22:13:27,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6766164120206415) internal successors, (16570), 9883 states have internal predecessors, (16570), 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)
[2023-12-25 22:13:27,966 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16570 transitions.
[2023-12-25 22:13:27,967 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16570 transitions. Word has length 459
[2023-12-25 22:13:27,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:13:27,967 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16570 transitions.
[2023-12-25 22:13:27,968 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 91.8) internal successors, (459), 4 states have internal predecessors, (459), 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)
[2023-12-25 22:13:27,968 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16570 transitions.
[2023-12-25 22:13:27,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 460
[2023-12-25 22:13:27,974 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:27,974 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:13:27,974 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 22:13:27,974 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:13:27,974 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:13:27,975 INFO  L85        PathProgramCache]: Analyzing trace with hash 64519673, now seen corresponding path program 1 times
[2023-12-25 22:13:27,975 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:13:27,975 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140594608]
[2023-12-25 22:13:27,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:27,975 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:13:28,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:13:30,166 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:13:30,167 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:13:30,167 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140594608]
[2023-12-25 22:13:30,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140594608] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:13:30,168 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:13:30,168 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 22:13:30,168 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677601106]
[2023-12-25 22:13:30,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:13:30,169 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:13:30,169 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:13:30,170 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:13:30,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:13:30,170 INFO  L87              Difference]: Start difference. First operand 9884 states and 16570 transitions. Second operand  has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 6 states have internal predecessors, (459), 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)
[2023-12-25 22:13:32,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:13:32,558 INFO  L93              Difference]: Finished difference Result 28294 states and 47455 transitions.
[2023-12-25 22:13:32,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 22:13:32,559 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 6 states have internal predecessors, (459), 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 459
[2023-12-25 22:13:32,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:13:32,597 INFO  L225             Difference]: With dead ends: 28294
[2023-12-25 22:13:32,597 INFO  L226             Difference]: Without dead ends: 19083
[2023-12-25 22:13:32,611 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:13:32,612 INFO  L413           NwaCegarLoop]: 16250 mSDtfsCounter, 77848 mSDsluCounter, 64854 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77848 SdHoareTripleChecker+Valid, 81104 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2023-12-25 22:13:32,612 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [77848 Valid, 81104 Invalid, 1569 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2023-12-25 22:13:32,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19083 states.
[2023-12-25 22:13:32,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19083 to 9884.
[2023-12-25 22:13:32,795 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6766164120206415) internal successors, (16570), 9883 states have internal predecessors, (16570), 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)
[2023-12-25 22:13:32,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16570 transitions.
[2023-12-25 22:13:32,808 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16570 transitions. Word has length 459
[2023-12-25 22:13:32,809 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:13:32,809 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16570 transitions.
[2023-12-25 22:13:32,809 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 6 states have internal predecessors, (459), 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)
[2023-12-25 22:13:32,809 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16570 transitions.
[2023-12-25 22:13:33,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6384
[2023-12-25 22:13:33,075 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:33,078 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:13:33,078 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-25 22:13:33,079 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:13:33,080 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:13:33,083 INFO  L85        PathProgramCache]: Analyzing trace with hash 2050492181, now seen corresponding path program 1 times
[2023-12-25 22:13:33,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:13:33,083 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728843698]
[2023-12-25 22:13:33,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:33,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:13:34,474 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:13:34,474 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010190692]
[2023-12-25 22:13:34,476 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:13:34,476 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:13:34,476 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:13:34,480 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)
[2023-12-25 22:13:34,487 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 22:13:52,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:13:52,803 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63785 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 22:13:53,050 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:13:54,999 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:13:54,999 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:13:55,000 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:13:55,000 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728843698]
[2023-12-25 22:13:55,000 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:13:55,000 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010190692]
[2023-12-25 22:13:55,000 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010190692] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:13:55,000 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:13:55,001 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 22:13:55,001 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273151493]
[2023-12-25 22:13:55,001 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:13:55,007 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:13:55,008 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:13:55,013 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:13:55,013 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:13:55,015 INFO  L87              Difference]: Start difference. First operand 9884 states and 16570 transitions. Second operand  has 4 states, 4 states have (on average 1595.75) internal successors, (6383), 3 states have internal predecessors, (6383), 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)
[2023-12-25 22:13:59,263 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:13:59,264 INFO  L93              Difference]: Finished difference Result 19182 states and 32162 transitions.
[2023-12-25 22:13:59,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:13:59,267 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1595.75) internal successors, (6383), 3 states have internal predecessors, (6383), 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 6383
[2023-12-25 22:13:59,268 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:13:59,282 INFO  L225             Difference]: With dead ends: 19182
[2023-12-25 22:13:59,283 INFO  L226             Difference]: Without dead ends: 9971
[2023-12-25 22:13:59,294 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6383 GetRequests, 6380 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:13:59,294 INFO  L413           NwaCegarLoop]: 12852 mSDtfsCounter, 31450 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 3917 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31450 SdHoareTripleChecker+Valid, 14046 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:13:59,295 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31450 Valid, 14046 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3917 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2023-12-25 22:13:59,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9971 states.
[2023-12-25 22:13:59,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9971 to 9884.
[2023-12-25 22:13:59,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.676515228169584) internal successors, (16569), 9883 states have internal predecessors, (16569), 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)
[2023-12-25 22:13:59,445 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16569 transitions.
[2023-12-25 22:13:59,445 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16569 transitions. Word has length 6383
[2023-12-25 22:13:59,447 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:13:59,448 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16569 transitions.
[2023-12-25 22:13:59,450 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1595.75) internal successors, (6383), 3 states have internal predecessors, (6383), 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)
[2023-12-25 22:13:59,450 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16569 transitions.
[2023-12-25 22:13:59,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6385
[2023-12-25 22:13:59,810 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:13:59,813 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:14:00,007 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-25 22:14:00,014 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,SelfDestructingSolverStorable5
[2023-12-25 22:14:00,014 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:14:00,015 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:14:00,018 INFO  L85        PathProgramCache]: Analyzing trace with hash 544314073, now seen corresponding path program 1 times
[2023-12-25 22:14:00,018 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:14:00,018 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463096999]
[2023-12-25 22:14:00,019 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:14:00,019 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:14:01,037 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:14:01,037 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101580387]
[2023-12-25 22:14:01,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:14:01,039 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:14:01,039 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:14:01,041 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)
[2023-12-25 22:14:01,044 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 22:14:18,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:14:19,063 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63786 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:14:19,265 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:14:20,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:14:20,053 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:14:20,053 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:14:20,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463096999]
[2023-12-25 22:14:20,053 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:14:20,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101580387]
[2023-12-25 22:14:20,053 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101580387] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:14:20,053 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:14:20,054 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:14:20,054 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586577164]
[2023-12-25 22:14:20,054 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:14:20,061 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:14:20,061 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:14:20,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:14:20,065 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:14:20,066 INFO  L87              Difference]: Start difference. First operand 9884 states and 16569 transitions. Second operand  has 5 states, 5 states have (on average 1276.8) internal successors, (6384), 4 states have internal predecessors, (6384), 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)
[2023-12-25 22:14:20,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:14:20,932 INFO  L93              Difference]: Finished difference Result 19186 states and 32166 transitions.
[2023-12-25 22:14:20,932 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:14:20,934 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1276.8) internal successors, (6384), 4 states have internal predecessors, (6384), 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 6384
[2023-12-25 22:14:20,934 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:14:20,949 INFO  L225             Difference]: With dead ends: 19186
[2023-12-25 22:14:20,949 INFO  L226             Difference]: Without dead ends: 9975
[2023-12-25 22:14:20,960 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6384 GetRequests, 6380 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:14:20,960 INFO  L413           NwaCegarLoop]: 16387 mSDtfsCounter, 46887 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46887 SdHoareTripleChecker+Valid, 18902 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:14:20,961 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46887 Valid, 18902 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-25 22:14:20,972 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9975 states.
[2023-12-25 22:14:21,069 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 9884.
[2023-12-25 22:14:21,082 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6764140443185267) internal successors, (16568), 9883 states have internal predecessors, (16568), 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)
[2023-12-25 22:14:21,095 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16568 transitions.
[2023-12-25 22:14:21,095 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16568 transitions. Word has length 6384
[2023-12-25 22:14:21,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:14:21,097 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16568 transitions.
[2023-12-25 22:14:21,099 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1276.8) internal successors, (6384), 4 states have internal predecessors, (6384), 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)
[2023-12-25 22:14:21,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16568 transitions.
[2023-12-25 22:14:21,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6386
[2023-12-25 22:14:21,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:14:21,505 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:14:21,705 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process
[2023-12-25 22:14:21,708 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-25 22:14:21,708 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,SelfDestructingSolverStorable6
[2023-12-25 22:14:21,708 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:14:21,708 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:14:21,710 INFO  L85        PathProgramCache]: Analyzing trace with hash 614141578, now seen corresponding path program 1 times
[2023-12-25 22:14:21,710 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:14:21,710 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476044775]
[2023-12-25 22:14:21,711 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:14:21,711 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:14:22,637 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:14:22,637 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288370942]
[2023-12-25 22:14:22,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:14:22,639 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:14:22,639 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:14:22,640 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)
[2023-12-25 22:14:22,643 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 22:14:40,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:14:40,781 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63787 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:14:40,963 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:14:41,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:14:41,906 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:14:41,907 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:14:41,907 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476044775]
[2023-12-25 22:14:41,907 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:14:41,907 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288370942]
[2023-12-25 22:14:41,907 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288370942] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:14:41,907 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:14:41,908 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:14:41,908 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290495967]
[2023-12-25 22:14:41,908 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:14:41,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:14:41,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:14:41,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:14:41,920 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:14:41,923 INFO  L87              Difference]: Start difference. First operand 9884 states and 16568 transitions. Second operand  has 5 states, 5 states have (on average 1277.0) internal successors, (6385), 4 states have internal predecessors, (6385), 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)
[2023-12-25 22:14:42,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:14:42,677 INFO  L93              Difference]: Finished difference Result 19226 states and 32230 transitions.
[2023-12-25 22:14:42,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:14:42,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1277.0) internal successors, (6385), 4 states have internal predecessors, (6385), 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 6385
[2023-12-25 22:14:42,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:14:42,695 INFO  L225             Difference]: With dead ends: 19226
[2023-12-25 22:14:42,696 INFO  L226             Difference]: Without dead ends: 10015
[2023-12-25 22:14:42,707 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6385 GetRequests, 6381 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:14:42,707 INFO  L413           NwaCegarLoop]: 16451 mSDtfsCounter, 31633 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31633 SdHoareTripleChecker+Valid, 19031 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:14:42,708 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31633 Valid, 19031 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:14:42,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10015 states.
[2023-12-25 22:14:42,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10015 to 9884.
[2023-12-25 22:14:42,844 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6763128604674693) internal successors, (16567), 9883 states have internal predecessors, (16567), 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)
[2023-12-25 22:14:42,856 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16567 transitions.
[2023-12-25 22:14:42,857 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16567 transitions. Word has length 6385
[2023-12-25 22:14:42,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:14:42,859 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16567 transitions.
[2023-12-25 22:14:42,861 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1277.0) internal successors, (6385), 4 states have internal predecessors, (6385), 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)
[2023-12-25 22:14:42,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16567 transitions.
[2023-12-25 22:14:43,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6387
[2023-12-25 22:14:43,165 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:14:43,167 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:14:43,368 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process
[2023-12-25 22:14:43,394 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-25 22:14:43,394 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:14:43,395 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:14:43,395 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:14:43,397 INFO  L85        PathProgramCache]: Analyzing trace with hash -854454682, now seen corresponding path program 1 times
[2023-12-25 22:14:43,397 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:14:43,397 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161816750]
[2023-12-25 22:14:43,398 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:14:43,398 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:14:44,327 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:14:44,327 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53366197]
[2023-12-25 22:14:44,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:14:44,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:14:44,329 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:14:44,333 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)
[2023-12-25 22:14:44,335 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 22:15:02,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:15:02,614 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63788 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:15:02,816 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:15:03,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:15:03,452 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:15:03,452 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:15:03,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161816750]
[2023-12-25 22:15:03,452 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:15:03,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53366197]
[2023-12-25 22:15:03,452 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [53366197] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:15:03,452 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:15:03,453 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:15:03,453 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904247828]
[2023-12-25 22:15:03,453 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:15:03,459 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:15:03,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:15:03,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:15:03,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:15:03,465 INFO  L87              Difference]: Start difference. First operand 9884 states and 16567 transitions. Second operand  has 5 states, 5 states have (on average 1277.2) internal successors, (6386), 4 states have internal predecessors, (6386), 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)
[2023-12-25 22:15:04,194 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:15:04,194 INFO  L93              Difference]: Finished difference Result 19230 states and 32234 transitions.
[2023-12-25 22:15:04,195 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:15:04,197 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1277.2) internal successors, (6386), 4 states have internal predecessors, (6386), 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 6386
[2023-12-25 22:15:04,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:15:04,206 INFO  L225             Difference]: With dead ends: 19230
[2023-12-25 22:15:04,207 INFO  L226             Difference]: Without dead ends: 10019
[2023-12-25 22:15:04,216 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6386 GetRequests, 6382 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:15:04,217 INFO  L413           NwaCegarLoop]: 16455 mSDtfsCounter, 31631 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31631 SdHoareTripleChecker+Valid, 19040 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:15:04,217 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31631 Valid, 19040 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:15:04,227 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10019 states.
[2023-12-25 22:15:04,318 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 9884.
[2023-12-25 22:15:04,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6762116766164121) internal successors, (16566), 9883 states have internal predecessors, (16566), 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)
[2023-12-25 22:15:04,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16566 transitions.
[2023-12-25 22:15:04,341 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16566 transitions. Word has length 6386
[2023-12-25 22:15:04,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:15:04,343 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16566 transitions.
[2023-12-25 22:15:04,345 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1277.2) internal successors, (6386), 4 states have internal predecessors, (6386), 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)
[2023-12-25 22:15:04,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16566 transitions.
[2023-12-25 22:15:04,664 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6388
[2023-12-25 22:15:04,664 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:15:04,667 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:15:04,885 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process
[2023-12-25 22:15:04,911 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-25 22:15:04,912 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:15:04,912 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:15:04,912 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:15:04,914 INFO  L85        PathProgramCache]: Analyzing trace with hash 1905863295, now seen corresponding path program 1 times
[2023-12-25 22:15:04,914 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:15:04,914 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054920336]
[2023-12-25 22:15:04,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:15:04,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:15:05,800 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:15:05,800 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673554084]
[2023-12-25 22:15:05,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:15:05,802 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:15:05,802 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:15:05,805 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)
[2023-12-25 22:15:05,810 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 22:15:24,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:15:25,112 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63789 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:15:25,245 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:15:26,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:15:26,027 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:15:26,027 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:15:26,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054920336]
[2023-12-25 22:15:26,028 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:15:26,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673554084]
[2023-12-25 22:15:26,028 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [673554084] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:15:26,028 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:15:26,029 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:15:26,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552673486]
[2023-12-25 22:15:26,029 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:15:26,035 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:15:26,035 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:15:26,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:15:26,041 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:15:26,043 INFO  L87              Difference]: Start difference. First operand 9884 states and 16566 transitions. Second operand  has 5 states, 5 states have (on average 1277.4) internal successors, (6387), 4 states have internal predecessors, (6387), 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)
[2023-12-25 22:15:26,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:15:26,868 INFO  L93              Difference]: Finished difference Result 19270 states and 32298 transitions.
[2023-12-25 22:15:26,868 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:15:26,869 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1277.4) internal successors, (6387), 4 states have internal predecessors, (6387), 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 6387
[2023-12-25 22:15:26,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:15:26,880 INFO  L225             Difference]: With dead ends: 19270
[2023-12-25 22:15:26,880 INFO  L226             Difference]: Without dead ends: 10059
[2023-12-25 22:15:26,887 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6387 GetRequests, 6383 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:15:26,888 INFO  L413           NwaCegarLoop]: 16519 mSDtfsCounter, 46821 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46821 SdHoareTripleChecker+Valid, 19169 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:15:26,888 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46821 Valid, 19169 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-25 22:15:26,901 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10059 states.
[2023-12-25 22:15:27,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10059 to 9884.
[2023-12-25 22:15:27,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6761104927653547) internal successors, (16565), 9883 states have internal predecessors, (16565), 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)
[2023-12-25 22:15:27,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16565 transitions.
[2023-12-25 22:15:27,033 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16565 transitions. Word has length 6387
[2023-12-25 22:15:27,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:15:27,035 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16565 transitions.
[2023-12-25 22:15:27,037 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1277.4) internal successors, (6387), 4 states have internal predecessors, (6387), 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)
[2023-12-25 22:15:27,037 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16565 transitions.
[2023-12-25 22:15:27,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6389
[2023-12-25 22:15:27,400 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:15:27,403 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:15:27,597 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-25 22:15:27,603 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-25 22:15:27,603 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:15:27,604 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:15:27,606 INFO  L85        PathProgramCache]: Analyzing trace with hash -183825293, now seen corresponding path program 1 times
[2023-12-25 22:15:27,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:15:27,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166174702]
[2023-12-25 22:15:27,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:15:27,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:15:28,445 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:15:28,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268898898]
[2023-12-25 22:15:28,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:15:28,447 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:15:28,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:15:28,449 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)
[2023-12-25 22:15:28,452 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 22:15:45,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:15:46,426 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63790 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:15:46,555 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:15:47,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:15:47,198 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:15:47,198 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:15:47,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166174702]
[2023-12-25 22:15:47,198 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:15:47,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268898898]
[2023-12-25 22:15:47,198 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268898898] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:15:47,198 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:15:47,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:15:47,199 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034084990]
[2023-12-25 22:15:47,199 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:15:47,204 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:15:47,204 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:15:47,209 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:15:47,209 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:15:47,210 INFO  L87              Difference]: Start difference. First operand 9884 states and 16565 transitions. Second operand  has 5 states, 5 states have (on average 1277.6) internal successors, (6388), 4 states have internal predecessors, (6388), 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)
[2023-12-25 22:15:47,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:15:47,950 INFO  L93              Difference]: Finished difference Result 19274 states and 32302 transitions.
[2023-12-25 22:15:47,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:15:47,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1277.6) internal successors, (6388), 4 states have internal predecessors, (6388), 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 6388
[2023-12-25 22:15:47,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:15:47,960 INFO  L225             Difference]: With dead ends: 19274
[2023-12-25 22:15:47,961 INFO  L226             Difference]: Without dead ends: 10063
[2023-12-25 22:15:47,965 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6388 GetRequests, 6384 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:15:47,966 INFO  L413           NwaCegarLoop]: 16523 mSDtfsCounter, 31627 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31627 SdHoareTripleChecker+Valid, 19178 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:15:47,966 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31627 Valid, 19178 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:15:47,975 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10063 states.
[2023-12-25 22:15:48,060 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 9884.
[2023-12-25 22:15:48,070 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6760093089142973) internal successors, (16564), 9883 states have internal predecessors, (16564), 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)
[2023-12-25 22:15:48,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16564 transitions.
[2023-12-25 22:15:48,081 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16564 transitions. Word has length 6388
[2023-12-25 22:15:48,082 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:15:48,083 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16564 transitions.
[2023-12-25 22:15:48,084 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1277.6) internal successors, (6388), 4 states have internal predecessors, (6388), 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)
[2023-12-25 22:15:48,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16564 transitions.
[2023-12-25 22:15:48,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6390
[2023-12-25 22:15:48,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:15:48,364 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:15:48,549 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-12-25 22:15:48,580 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:15:48,580 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:15:48,580 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:15:48,582 INFO  L85        PathProgramCache]: Analyzing trace with hash 216095476, now seen corresponding path program 1 times
[2023-12-25 22:15:48,582 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:15:48,582 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330631690]
[2023-12-25 22:15:48,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:15:48,583 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:15:49,403 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:15:49,403 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088650525]
[2023-12-25 22:15:49,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:15:49,405 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:15:49,405 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:15:49,406 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)
[2023-12-25 22:15:49,408 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 22:16:06,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:16:07,436 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63791 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:16:07,562 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:16:08,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:16:08,256 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:16:08,256 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:16:08,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330631690]
[2023-12-25 22:16:08,256 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:16:08,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088650525]
[2023-12-25 22:16:08,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088650525] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:16:08,257 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:16:08,257 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:16:08,257 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788490259]
[2023-12-25 22:16:08,257 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:16:08,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:16:08,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:16:08,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:16:08,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:16:08,265 INFO  L87              Difference]: Start difference. First operand 9884 states and 16564 transitions. Second operand  has 5 states, 5 states have (on average 1277.8) internal successors, (6389), 4 states have internal predecessors, (6389), 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)
[2023-12-25 22:16:08,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:16:08,899 INFO  L93              Difference]: Finished difference Result 19314 states and 32366 transitions.
[2023-12-25 22:16:08,899 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:16:08,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1277.8) internal successors, (6389), 4 states have internal predecessors, (6389), 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 6389
[2023-12-25 22:16:08,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:16:08,909 INFO  L225             Difference]: With dead ends: 19314
[2023-12-25 22:16:08,909 INFO  L226             Difference]: Without dead ends: 10103
[2023-12-25 22:16:08,917 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6389 GetRequests, 6385 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:16:08,917 INFO  L413           NwaCegarLoop]: 16587 mSDtfsCounter, 31625 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31625 SdHoareTripleChecker+Valid, 19307 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:16:08,917 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31625 Valid, 19307 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:16:08,926 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10103 states.
[2023-12-25 22:16:09,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 9884.
[2023-12-25 22:16:09,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.67590812506324) internal successors, (16563), 9883 states have internal predecessors, (16563), 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)
[2023-12-25 22:16:09,062 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16563 transitions.
[2023-12-25 22:16:09,062 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16563 transitions. Word has length 6389
[2023-12-25 22:16:09,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:16:09,064 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16563 transitions.
[2023-12-25 22:16:09,066 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1277.8) internal successors, (6389), 4 states have internal predecessors, (6389), 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)
[2023-12-25 22:16:09,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16563 transitions.
[2023-12-25 22:16:09,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6391
[2023-12-25 22:16:09,343 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:16:09,346 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:16:09,554 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-25 22:16:09,560 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:16:09,560 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:16:09,561 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:16:09,562 INFO  L85        PathProgramCache]: Analyzing trace with hash -728888064, now seen corresponding path program 1 times
[2023-12-25 22:16:09,562 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:16:09,562 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479618593]
[2023-12-25 22:16:09,563 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:16:09,563 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:16:10,452 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:16:10,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448026085]
[2023-12-25 22:16:10,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:16:10,454 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:16:10,454 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:16:10,459 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)
[2023-12-25 22:16:10,459 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 22:16:28,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:16:28,897 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63792 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:16:29,030 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:16:29,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:16:29,685 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:16:29,685 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:16:29,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479618593]
[2023-12-25 22:16:29,685 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:16:29,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448026085]
[2023-12-25 22:16:29,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [448026085] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:16:29,686 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:16:29,686 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:16:29,686 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881172669]
[2023-12-25 22:16:29,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:16:29,690 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:16:29,690 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:16:29,694 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:16:29,694 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:16:29,695 INFO  L87              Difference]: Start difference. First operand 9884 states and 16563 transitions. Second operand  has 5 states, 5 states have (on average 1278.0) internal successors, (6390), 4 states have internal predecessors, (6390), 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)
[2023-12-25 22:16:30,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:16:30,428 INFO  L93              Difference]: Finished difference Result 19318 states and 32370 transitions.
[2023-12-25 22:16:30,428 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:16:30,430 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1278.0) internal successors, (6390), 4 states have internal predecessors, (6390), 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 6390
[2023-12-25 22:16:30,430 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:16:30,438 INFO  L225             Difference]: With dead ends: 19318
[2023-12-25 22:16:30,439 INFO  L226             Difference]: Without dead ends: 10107
[2023-12-25 22:16:30,447 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6390 GetRequests, 6386 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:16:30,447 INFO  L413           NwaCegarLoop]: 16591 mSDtfsCounter, 31623 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31623 SdHoareTripleChecker+Valid, 19316 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:16:30,447 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31623 Valid, 19316 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:16:30,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10107 states.
[2023-12-25 22:16:30,558 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 9884.
[2023-12-25 22:16:30,570 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6758069412121825) internal successors, (16562), 9883 states have internal predecessors, (16562), 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)
[2023-12-25 22:16:30,582 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16562 transitions.
[2023-12-25 22:16:30,582 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16562 transitions. Word has length 6390
[2023-12-25 22:16:30,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:16:30,584 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16562 transitions.
[2023-12-25 22:16:30,585 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1278.0) internal successors, (6390), 4 states have internal predecessors, (6390), 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)
[2023-12-25 22:16:30,586 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16562 transitions.
[2023-12-25 22:16:30,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6392
[2023-12-25 22:16:30,892 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:16:30,894 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:16:31,095 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process
[2023-12-25 22:16:31,100 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 22:16:31,101 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,SelfDestructingSolverStorable12
[2023-12-25 22:16:31,101 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:16:31,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:16:31,103 INFO  L85        PathProgramCache]: Analyzing trace with hash 617783273, now seen corresponding path program 1 times
[2023-12-25 22:16:31,103 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:16:31,103 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831410346]
[2023-12-25 22:16:31,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:16:31,104 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:16:32,025 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:16:32,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072623435]
[2023-12-25 22:16:32,027 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:16:32,027 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:16:32,027 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:16:32,028 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)
[2023-12-25 22:16:32,031 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 22:16:50,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:16:50,541 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63793 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:16:50,785 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:16:51,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:16:51,506 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:16:51,506 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:16:51,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831410346]
[2023-12-25 22:16:51,506 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:16:51,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072623435]
[2023-12-25 22:16:51,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072623435] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:16:51,506 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:16:51,507 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:16:51,507 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368056772]
[2023-12-25 22:16:51,507 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:16:51,511 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:16:51,511 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:16:51,515 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:16:51,515 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:16:51,516 INFO  L87              Difference]: Start difference. First operand 9884 states and 16562 transitions. Second operand  has 5 states, 5 states have (on average 1278.2) internal successors, (6391), 4 states have internal predecessors, (6391), 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)
[2023-12-25 22:16:52,264 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:16:52,264 INFO  L93              Difference]: Finished difference Result 19358 states and 32434 transitions.
[2023-12-25 22:16:52,265 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:16:52,266 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1278.2) internal successors, (6391), 4 states have internal predecessors, (6391), 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 6391
[2023-12-25 22:16:52,267 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:16:52,275 INFO  L225             Difference]: With dead ends: 19358
[2023-12-25 22:16:52,275 INFO  L226             Difference]: Without dead ends: 10147
[2023-12-25 22:16:52,282 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6391 GetRequests, 6387 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:16:52,283 INFO  L413           NwaCegarLoop]: 16655 mSDtfsCounter, 46749 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46749 SdHoareTripleChecker+Valid, 19445 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:16:52,283 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46749 Valid, 19445 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:16:52,292 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10147 states.
[2023-12-25 22:16:52,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10147 to 9884.
[2023-12-25 22:16:52,397 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6757057573611251) internal successors, (16561), 9883 states have internal predecessors, (16561), 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)
[2023-12-25 22:16:52,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16561 transitions.
[2023-12-25 22:16:52,410 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16561 transitions. Word has length 6391
[2023-12-25 22:16:52,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:16:52,410 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16561 transitions.
[2023-12-25 22:16:52,412 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1278.2) internal successors, (6391), 4 states have internal predecessors, (6391), 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)
[2023-12-25 22:16:52,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16561 transitions.
[2023-12-25 22:16:52,707 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6393
[2023-12-25 22:16:52,707 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:16:52,710 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:16:52,914 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forcibly destroying the process
[2023-12-25 22:16:52,929 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 22:16:52,929 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 22:16:52,929 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:16:52,929 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:16:52,931 INFO  L85        PathProgramCache]: Analyzing trace with hash -1461940211, now seen corresponding path program 1 times
[2023-12-25 22:16:52,931 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:16:52,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385134915]
[2023-12-25 22:16:52,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:16:52,932 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:16:53,933 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:16:53,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490028063]
[2023-12-25 22:16:53,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:16:53,936 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:16:53,936 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:16:53,941 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)
[2023-12-25 22:16:53,943 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 22:17:11,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:17:12,420 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63794 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:17:12,535 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:17:13,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:17:13,216 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:17:13,216 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:17:13,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385134915]
[2023-12-25 22:17:13,216 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:17:13,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490028063]
[2023-12-25 22:17:13,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [490028063] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:17:13,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:17:13,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:17:13,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978509080]
[2023-12-25 22:17:13,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:17:13,220 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:17:13,221 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:17:13,225 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:17:13,225 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:17:13,226 INFO  L87              Difference]: Start difference. First operand 9884 states and 16561 transitions. Second operand  has 5 states, 5 states have (on average 1278.4) internal successors, (6392), 4 states have internal predecessors, (6392), 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)
[2023-12-25 22:17:13,952 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:17:13,952 INFO  L93              Difference]: Finished difference Result 19362 states and 32438 transitions.
[2023-12-25 22:17:13,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:17:13,954 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1278.4) internal successors, (6392), 4 states have internal predecessors, (6392), 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 6392
[2023-12-25 22:17:13,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:17:13,962 INFO  L225             Difference]: With dead ends: 19362
[2023-12-25 22:17:13,962 INFO  L226             Difference]: Without dead ends: 10151
[2023-12-25 22:17:13,967 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6392 GetRequests, 6388 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:17:13,967 INFO  L413           NwaCegarLoop]: 16659 mSDtfsCounter, 46743 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46743 SdHoareTripleChecker+Valid, 19454 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:17:13,967 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46743 Valid, 19454 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:17:13,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10151 states.
[2023-12-25 22:17:14,057 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 9884.
[2023-12-25 22:17:14,067 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6756045735100678) internal successors, (16560), 9883 states have internal predecessors, (16560), 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)
[2023-12-25 22:17:14,080 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16560 transitions.
[2023-12-25 22:17:14,080 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16560 transitions. Word has length 6392
[2023-12-25 22:17:14,081 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:17:14,081 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16560 transitions.
[2023-12-25 22:17:14,083 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1278.4) internal successors, (6392), 4 states have internal predecessors, (6392), 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)
[2023-12-25 22:17:14,083 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16560 transitions.
[2023-12-25 22:17:14,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6394
[2023-12-25 22:17:14,355 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:17:14,357 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:17:14,552 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 22:17:14,557 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,SelfDestructingSolverStorable14
[2023-12-25 22:17:14,557 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:17:14,558 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:17:14,559 INFO  L85        PathProgramCache]: Analyzing trace with hash -2038695586, now seen corresponding path program 1 times
[2023-12-25 22:17:14,559 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:17:14,559 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134766121]
[2023-12-25 22:17:14,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:17:14,560 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:17:15,419 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:17:15,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148911149]
[2023-12-25 22:17:15,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:17:15,421 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:17:15,421 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:17:15,422 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)
[2023-12-25 22:17:15,424 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 22:17:34,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:17:34,741 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63795 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:17:34,861 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:17:35,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:17:35,637 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:17:35,637 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:17:35,637 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134766121]
[2023-12-25 22:17:35,637 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:17:35,637 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148911149]
[2023-12-25 22:17:35,637 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [148911149] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:17:35,637 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:17:35,638 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:17:35,638 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219070184]
[2023-12-25 22:17:35,638 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:17:35,641 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:17:35,641 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:17:35,645 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:17:35,645 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:17:35,646 INFO  L87              Difference]: Start difference. First operand 9884 states and 16560 transitions. Second operand  has 5 states, 5 states have (on average 1278.6) internal successors, (6393), 4 states have internal predecessors, (6393), 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)
[2023-12-25 22:17:36,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:17:36,394 INFO  L93              Difference]: Finished difference Result 19402 states and 32502 transitions.
[2023-12-25 22:17:36,394 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:17:36,396 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1278.6) internal successors, (6393), 4 states have internal predecessors, (6393), 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 6393
[2023-12-25 22:17:36,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:17:36,405 INFO  L225             Difference]: With dead ends: 19402
[2023-12-25 22:17:36,405 INFO  L226             Difference]: Without dead ends: 10191
[2023-12-25 22:17:36,411 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6393 GetRequests, 6389 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:17:36,412 INFO  L413           NwaCegarLoop]: 16723 mSDtfsCounter, 46713 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46713 SdHoareTripleChecker+Valid, 19583 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:17:36,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46713 Valid, 19583 Invalid, 349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:17:36,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10191 states.
[2023-12-25 22:17:36,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 9884.
[2023-12-25 22:17:36,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6755033896590104) internal successors, (16559), 9883 states have internal predecessors, (16559), 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)
[2023-12-25 22:17:36,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16559 transitions.
[2023-12-25 22:17:36,529 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16559 transitions. Word has length 6393
[2023-12-25 22:17:36,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:17:36,530 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16559 transitions.
[2023-12-25 22:17:36,532 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1278.6) internal successors, (6393), 4 states have internal predecessors, (6393), 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)
[2023-12-25 22:17:36,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16559 transitions.
[2023-12-25 22:17:36,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6395
[2023-12-25 22:17:36,816 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:17:36,817 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:17:37,020 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process
[2023-12-25 22:17:37,054 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 22:17:37,055 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,SelfDestructingSolverStorable15
[2023-12-25 22:17:37,055 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:17:37,055 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:17:37,056 INFO  L85        PathProgramCache]: Analyzing trace with hash 877139354, now seen corresponding path program 1 times
[2023-12-25 22:17:37,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:17:37,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674667349]
[2023-12-25 22:17:37,057 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:17:37,057 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:17:37,905 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:17:37,906 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709577879]
[2023-12-25 22:17:37,907 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:17:37,907 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:17:37,908 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:17:37,909 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)
[2023-12-25 22:17:37,911 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 22:17:56,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:17:56,609 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63796 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:17:56,731 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:17:57,499 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:17:57,499 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:17:57,499 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:17:57,500 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674667349]
[2023-12-25 22:17:57,500 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:17:57,500 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709577879]
[2023-12-25 22:17:57,500 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709577879] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:17:57,501 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:17:57,501 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:17:57,501 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311571288]
[2023-12-25 22:17:57,501 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:17:57,504 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:17:57,505 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:17:57,507 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:17:57,507 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:17:57,508 INFO  L87              Difference]: Start difference. First operand 9884 states and 16559 transitions. Second operand  has 5 states, 5 states have (on average 1278.8) internal successors, (6394), 4 states have internal predecessors, (6394), 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)
[2023-12-25 22:17:58,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:17:58,206 INFO  L93              Difference]: Finished difference Result 19406 states and 32506 transitions.
[2023-12-25 22:17:58,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:17:58,208 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1278.8) internal successors, (6394), 4 states have internal predecessors, (6394), 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 6394
[2023-12-25 22:17:58,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:17:58,217 INFO  L225             Difference]: With dead ends: 19406
[2023-12-25 22:17:58,217 INFO  L226             Difference]: Without dead ends: 10195
[2023-12-25 22:17:58,223 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6394 GetRequests, 6390 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:17:58,224 INFO  L413           NwaCegarLoop]: 16727 mSDtfsCounter, 46707 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46707 SdHoareTripleChecker+Valid, 19592 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:17:58,224 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46707 Valid, 19592 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:17:58,231 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10195 states.
[2023-12-25 22:17:58,291 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10195 to 9884.
[2023-12-25 22:17:58,299 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.675402205807953) internal successors, (16558), 9883 states have internal predecessors, (16558), 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)
[2023-12-25 22:17:58,308 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16558 transitions.
[2023-12-25 22:17:58,308 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16558 transitions. Word has length 6394
[2023-12-25 22:17:58,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:17:58,309 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16558 transitions.
[2023-12-25 22:17:58,310 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1278.8) internal successors, (6394), 4 states have internal predecessors, (6394), 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)
[2023-12-25 22:17:58,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16558 transitions.
[2023-12-25 22:17:58,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6396
[2023-12-25 22:17:58,602 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:17:58,604 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:17:58,804 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process
[2023-12-25 22:17:58,810 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-25 22:17:58,811 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,SelfDestructingSolverStorable16
[2023-12-25 22:17:58,811 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:17:58,811 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:17:58,812 INFO  L85        PathProgramCache]: Analyzing trace with hash -1180932269, now seen corresponding path program 1 times
[2023-12-25 22:17:58,813 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:17:58,813 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268865861]
[2023-12-25 22:17:58,813 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:17:58,813 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:17:59,756 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:17:59,756 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065667015]
[2023-12-25 22:17:59,758 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:17:59,758 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:17:59,758 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:17:59,772 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)
[2023-12-25 22:17:59,836 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 22:18:18,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:18:18,492 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63797 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:18:18,609 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:18:19,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:18:19,353 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:18:19,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:18:19,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268865861]
[2023-12-25 22:18:19,353 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:18:19,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065667015]
[2023-12-25 22:18:19,353 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065667015] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:18:19,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:18:19,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:18:19,354 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899730347]
[2023-12-25 22:18:19,354 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:18:19,357 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:18:19,357 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:18:19,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:18:19,360 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:18:19,360 INFO  L87              Difference]: Start difference. First operand 9884 states and 16558 transitions. Second operand  has 5 states, 5 states have (on average 1279.0) internal successors, (6395), 4 states have internal predecessors, (6395), 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)
[2023-12-25 22:18:20,131 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:18:20,132 INFO  L93              Difference]: Finished difference Result 19446 states and 32570 transitions.
[2023-12-25 22:18:20,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:18:20,137 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1279.0) internal successors, (6395), 4 states have internal predecessors, (6395), 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 6395
[2023-12-25 22:18:20,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:18:20,148 INFO  L225             Difference]: With dead ends: 19446
[2023-12-25 22:18:20,149 INFO  L226             Difference]: Without dead ends: 10235
[2023-12-25 22:18:20,156 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6395 GetRequests, 6391 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:18:20,157 INFO  L413           NwaCegarLoop]: 16791 mSDtfsCounter, 46677 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46677 SdHoareTripleChecker+Valid, 19721 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:18:20,157 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46677 Valid, 19721 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:18:20,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10235 states.
[2023-12-25 22:18:20,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 9884.
[2023-12-25 22:18:20,249 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6753010219568958) internal successors, (16557), 9883 states have internal predecessors, (16557), 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)
[2023-12-25 22:18:20,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16557 transitions.
[2023-12-25 22:18:20,259 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16557 transitions. Word has length 6395
[2023-12-25 22:18:20,259 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:18:20,260 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16557 transitions.
[2023-12-25 22:18:20,261 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1279.0) internal successors, (6395), 4 states have internal predecessors, (6395), 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)
[2023-12-25 22:18:20,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16557 transitions.
[2023-12-25 22:18:20,528 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6397
[2023-12-25 22:18:20,528 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:18:20,530 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:18:20,730 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process
[2023-12-25 22:18:20,755 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-25 22:18:20,755 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,SelfDestructingSolverStorable17
[2023-12-25 22:18:20,755 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:18:20,756 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:18:20,757 INFO  L85        PathProgramCache]: Analyzing trace with hash 1110580647, now seen corresponding path program 1 times
[2023-12-25 22:18:20,757 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:18:20,757 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921378580]
[2023-12-25 22:18:20,758 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:18:20,758 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:18:21,664 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:18:21,664 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222894002]
[2023-12-25 22:18:21,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:18:21,666 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:18:21,666 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:18:21,667 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)
[2023-12-25 22:18:21,670 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 22:18:39,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:18:40,288 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63798 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:18:40,492 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:18:41,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:18:41,253 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:18:41,253 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:18:41,253 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921378580]
[2023-12-25 22:18:41,253 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:18:41,253 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222894002]
[2023-12-25 22:18:41,253 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [222894002] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:18:41,253 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:18:41,254 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:18:41,254 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169131492]
[2023-12-25 22:18:41,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:18:41,257 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:18:41,257 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:18:41,260 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:18:41,261 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:18:41,261 INFO  L87              Difference]: Start difference. First operand 9884 states and 16557 transitions. Second operand  has 5 states, 5 states have (on average 1279.2) internal successors, (6396), 4 states have internal predecessors, (6396), 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)
[2023-12-25 22:18:42,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:18:42,067 INFO  L93              Difference]: Finished difference Result 19450 states and 32574 transitions.
[2023-12-25 22:18:42,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:18:42,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1279.2) internal successors, (6396), 4 states have internal predecessors, (6396), 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 6396
[2023-12-25 22:18:42,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:18:42,077 INFO  L225             Difference]: With dead ends: 19450
[2023-12-25 22:18:42,078 INFO  L226             Difference]: Without dead ends: 10239
[2023-12-25 22:18:42,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6396 GetRequests, 6392 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:18:42,083 INFO  L413           NwaCegarLoop]: 16795 mSDtfsCounter, 46671 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46671 SdHoareTripleChecker+Valid, 19730 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:18:42,084 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46671 Valid, 19730 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-25 22:18:42,093 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10239 states.
[2023-12-25 22:18:42,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 9884.
[2023-12-25 22:18:42,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6751998381058384) internal successors, (16556), 9883 states have internal predecessors, (16556), 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)
[2023-12-25 22:18:42,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16556 transitions.
[2023-12-25 22:18:42,180 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16556 transitions. Word has length 6396
[2023-12-25 22:18:42,181 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:18:42,181 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16556 transitions.
[2023-12-25 22:18:42,183 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1279.2) internal successors, (6396), 4 states have internal predecessors, (6396), 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)
[2023-12-25 22:18:42,183 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16556 transitions.
[2023-12-25 22:18:42,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6398
[2023-12-25 22:18:42,457 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:18:42,459 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:18:42,659 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process
[2023-12-25 22:18:42,678 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-25 22:18:42,679 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:18:42,679 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:18:42,679 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:18:42,680 INFO  L85        PathProgramCache]: Analyzing trace with hash 480438728, now seen corresponding path program 1 times
[2023-12-25 22:18:42,680 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:18:42,681 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112399743]
[2023-12-25 22:18:42,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:18:42,681 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:18:43,505 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:18:43,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463539923]
[2023-12-25 22:18:43,507 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:18:43,507 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:18:43,507 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:18:43,509 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)
[2023-12-25 22:18:43,518 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 22:19:01,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:19:01,683 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63799 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:19:01,813 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:19:02,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:19:02,679 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:19:02,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:19:02,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112399743]
[2023-12-25 22:19:02,679 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:19:02,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463539923]
[2023-12-25 22:19:02,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [463539923] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:19:02,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:19:02,680 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:19:02,680 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310233252]
[2023-12-25 22:19:02,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:19:02,683 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:19:02,683 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:19:02,686 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:19:02,686 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:19:02,686 INFO  L87              Difference]: Start difference. First operand 9884 states and 16556 transitions. Second operand  has 5 states, 5 states have (on average 1279.4) internal successors, (6397), 4 states have internal predecessors, (6397), 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)
[2023-12-25 22:19:03,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:19:03,339 INFO  L93              Difference]: Finished difference Result 19490 states and 32638 transitions.
[2023-12-25 22:19:03,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:19:03,341 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1279.4) internal successors, (6397), 4 states have internal predecessors, (6397), 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 6397
[2023-12-25 22:19:03,342 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:19:03,349 INFO  L225             Difference]: With dead ends: 19490
[2023-12-25 22:19:03,349 INFO  L226             Difference]: Without dead ends: 10279
[2023-12-25 22:19:03,355 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6397 GetRequests, 6393 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:19:03,355 INFO  L413           NwaCegarLoop]: 16859 mSDtfsCounter, 31609 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31609 SdHoareTripleChecker+Valid, 19859 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:19:03,356 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31609 Valid, 19859 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:19:03,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10279 states.
[2023-12-25 22:19:03,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10279 to 9884.
[2023-12-25 22:19:03,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.675098654254781) internal successors, (16555), 9883 states have internal predecessors, (16555), 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)
[2023-12-25 22:19:03,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16555 transitions.
[2023-12-25 22:19:03,525 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16555 transitions. Word has length 6397
[2023-12-25 22:19:03,526 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:19:03,526 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16555 transitions.
[2023-12-25 22:19:03,527 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1279.4) internal successors, (6397), 4 states have internal predecessors, (6397), 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)
[2023-12-25 22:19:03,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16555 transitions.
[2023-12-25 22:19:03,780 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6399
[2023-12-25 22:19:03,780 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:19:03,782 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:19:03,980 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-12-25 22:19:03,996 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:19:03,997 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:19:03,997 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:19:03,998 INFO  L85        PathProgramCache]: Analyzing trace with hash 722217012, now seen corresponding path program 1 times
[2023-12-25 22:19:03,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:19:03,998 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447527282]
[2023-12-25 22:19:03,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:19:03,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:19:04,779 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:19:04,779 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772537828]
[2023-12-25 22:19:04,780 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:19:04,781 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:19:04,781 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:19:04,782 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:19:04,785 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 22:19:22,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:19:22,844 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63800 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:19:22,969 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:19:23,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:19:23,726 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:19:23,726 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:19:23,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447527282]
[2023-12-25 22:19:23,726 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:19:23,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772537828]
[2023-12-25 22:19:23,726 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [772537828] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:19:23,726 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:19:23,727 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:19:23,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191003691]
[2023-12-25 22:19:23,727 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:19:23,731 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:19:23,731 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:19:23,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:19:23,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:19:23,736 INFO  L87              Difference]: Start difference. First operand 9884 states and 16555 transitions. Second operand  has 5 states, 5 states have (on average 1279.6) internal successors, (6398), 4 states have internal predecessors, (6398), 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)
[2023-12-25 22:19:24,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:19:24,500 INFO  L93              Difference]: Finished difference Result 19494 states and 32642 transitions.
[2023-12-25 22:19:24,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:19:24,502 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1279.6) internal successors, (6398), 4 states have internal predecessors, (6398), 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 6398
[2023-12-25 22:19:24,504 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:19:24,513 INFO  L225             Difference]: With dead ends: 19494
[2023-12-25 22:19:24,513 INFO  L226             Difference]: Without dead ends: 10283
[2023-12-25 22:19:24,520 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6398 GetRequests, 6394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:19:24,521 INFO  L413           NwaCegarLoop]: 16863 mSDtfsCounter, 46635 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46635 SdHoareTripleChecker+Valid, 19868 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:19:24,521 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46635 Valid, 19868 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:19:24,529 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10283 states.
[2023-12-25 22:19:24,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 9884.
[2023-12-25 22:19:24,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6749974704037236) internal successors, (16554), 9883 states have internal predecessors, (16554), 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)
[2023-12-25 22:19:24,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16554 transitions.
[2023-12-25 22:19:24,609 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16554 transitions. Word has length 6398
[2023-12-25 22:19:24,609 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:19:24,609 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16554 transitions.
[2023-12-25 22:19:24,611 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1279.6) internal successors, (6398), 4 states have internal predecessors, (6398), 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)
[2023-12-25 22:19:24,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16554 transitions.
[2023-12-25 22:19:24,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6400
[2023-12-25 22:19:24,872 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:19:24,874 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:19:25,068 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-25 22:19:25,088 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:19:25,088 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:19:25,088 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:19:25,090 INFO  L85        PathProgramCache]: Analyzing trace with hash 11436221, now seen corresponding path program 1 times
[2023-12-25 22:19:25,090 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:19:25,090 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553079748]
[2023-12-25 22:19:25,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:19:25,091 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:19:25,954 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:19:25,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883889409]
[2023-12-25 22:19:25,956 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:19:25,957 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:19:25,957 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:19:25,961 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:19:25,963 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 22:19:45,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:19:46,362 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63801 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:19:46,475 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:19:47,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:19:47,246 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:19:47,246 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:19:47,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553079748]
[2023-12-25 22:19:47,246 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:19:47,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883889409]
[2023-12-25 22:19:47,246 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883889409] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:19:47,246 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:19:47,247 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:19:47,247 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836973694]
[2023-12-25 22:19:47,247 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:19:47,387 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:19:47,387 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:19:47,391 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:19:47,391 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:19:47,392 INFO  L87              Difference]: Start difference. First operand 9884 states and 16554 transitions. Second operand  has 5 states, 5 states have (on average 1279.8) internal successors, (6399), 4 states have internal predecessors, (6399), 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)
[2023-12-25 22:19:48,062 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:19:48,062 INFO  L93              Difference]: Finished difference Result 19534 states and 32706 transitions.
[2023-12-25 22:19:48,063 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:19:48,065 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1279.8) internal successors, (6399), 4 states have internal predecessors, (6399), 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 6399
[2023-12-25 22:19:48,065 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:19:48,074 INFO  L225             Difference]: With dead ends: 19534
[2023-12-25 22:19:48,074 INFO  L226             Difference]: Without dead ends: 10323
[2023-12-25 22:19:48,081 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6399 GetRequests, 6395 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:19:48,081 INFO  L413           NwaCegarLoop]: 16927 mSDtfsCounter, 46605 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46605 SdHoareTripleChecker+Valid, 19997 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:19:48,081 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46605 Valid, 19997 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:19:48,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10323 states.
[2023-12-25 22:19:48,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 9884.
[2023-12-25 22:19:48,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6748962865526662) internal successors, (16553), 9883 states have internal predecessors, (16553), 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)
[2023-12-25 22:19:48,170 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16553 transitions.
[2023-12-25 22:19:48,170 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16553 transitions. Word has length 6399
[2023-12-25 22:19:48,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:19:48,171 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16553 transitions.
[2023-12-25 22:19:48,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1279.8) internal successors, (6399), 4 states have internal predecessors, (6399), 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)
[2023-12-25 22:19:48,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16553 transitions.
[2023-12-25 22:19:48,485 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6401
[2023-12-25 22:19:48,485 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:19:48,487 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:19:48,687 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forcibly destroying the process
[2023-12-25 22:19:48,700 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-12-25 22:19:48,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:19:48,700 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:19:48,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:19:48,701 INFO  L85        PathProgramCache]: Analyzing trace with hash 1482143041, now seen corresponding path program 1 times
[2023-12-25 22:19:48,701 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:19:48,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534413646]
[2023-12-25 22:19:48,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:19:48,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:19:49,707 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:19:49,707 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476402132]
[2023-12-25 22:19:49,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:19:49,716 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:19:49,716 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:19:49,718 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:19:49,725 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 22:20:07,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:20:08,094 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63802 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:20:08,225 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:20:09,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:20:09,041 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:20:09,042 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:20:09,042 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534413646]
[2023-12-25 22:20:09,042 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:20:09,042 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476402132]
[2023-12-25 22:20:09,042 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [476402132] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:20:09,042 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:20:09,043 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:20:09,043 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763161407]
[2023-12-25 22:20:09,043 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:20:09,046 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:20:09,047 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:20:09,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:20:09,050 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:20:09,052 INFO  L87              Difference]: Start difference. First operand 9884 states and 16553 transitions. Second operand  has 5 states, 5 states have (on average 1280.0) internal successors, (6400), 4 states have internal predecessors, (6400), 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)
[2023-12-25 22:20:09,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:20:09,794 INFO  L93              Difference]: Finished difference Result 19538 states and 32710 transitions.
[2023-12-25 22:20:09,794 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:20:09,796 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1280.0) internal successors, (6400), 4 states have internal predecessors, (6400), 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 6400
[2023-12-25 22:20:09,796 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:20:09,803 INFO  L225             Difference]: With dead ends: 19538
[2023-12-25 22:20:09,804 INFO  L226             Difference]: Without dead ends: 10327
[2023-12-25 22:20:09,809 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6400 GetRequests, 6396 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:20:09,809 INFO  L413           NwaCegarLoop]: 16931 mSDtfsCounter, 31603 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31603 SdHoareTripleChecker+Valid, 20006 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:20:09,810 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31603 Valid, 20006 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:20:09,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10327 states.
[2023-12-25 22:20:09,878 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 9884.
[2023-12-25 22:20:09,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6747951027016088) internal successors, (16552), 9883 states have internal predecessors, (16552), 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)
[2023-12-25 22:20:09,895 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16552 transitions.
[2023-12-25 22:20:09,895 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16552 transitions. Word has length 6400
[2023-12-25 22:20:09,896 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:20:09,896 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16552 transitions.
[2023-12-25 22:20:09,897 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1280.0) internal successors, (6400), 4 states have internal predecessors, (6400), 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)
[2023-12-25 22:20:09,897 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16552 transitions.
[2023-12-25 22:20:10,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6402
[2023-12-25 22:20:10,164 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:20:10,166 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:20:10,380 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forcibly destroying the process
[2023-12-25 22:20:10,380 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-12-25 22:20:10,380 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:20:10,381 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:20:10,381 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:20:10,382 INFO  L85        PathProgramCache]: Analyzing trace with hash -980538318, now seen corresponding path program 1 times
[2023-12-25 22:20:10,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:20:10,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122622024]
[2023-12-25 22:20:10,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:20:10,383 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:20:11,295 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:20:11,295 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9025343]
[2023-12-25 22:20:11,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:20:11,297 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:20:11,297 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:20:11,298 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:20:11,303 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 22:20:29,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:20:29,724 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63803 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:20:29,913 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:20:30,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:20:30,715 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:20:30,715 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:20:30,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122622024]
[2023-12-25 22:20:30,715 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:20:30,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9025343]
[2023-12-25 22:20:30,716 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [9025343] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:20:30,716 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:20:30,716 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:20:30,717 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722446665]
[2023-12-25 22:20:30,717 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:20:30,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:20:30,721 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:20:30,725 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:20:30,725 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:20:30,726 INFO  L87              Difference]: Start difference. First operand 9884 states and 16552 transitions. Second operand  has 5 states, 5 states have (on average 1280.2) internal successors, (6401), 4 states have internal predecessors, (6401), 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)
[2023-12-25 22:20:31,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:20:31,526 INFO  L93              Difference]: Finished difference Result 19578 states and 32774 transitions.
[2023-12-25 22:20:31,526 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:20:31,527 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1280.2) internal successors, (6401), 4 states have internal predecessors, (6401), 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 6401
[2023-12-25 22:20:31,528 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:20:31,535 INFO  L225             Difference]: With dead ends: 19578
[2023-12-25 22:20:31,535 INFO  L226             Difference]: Without dead ends: 10367
[2023-12-25 22:20:31,540 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6401 GetRequests, 6397 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:20:31,540 INFO  L413           NwaCegarLoop]: 16995 mSDtfsCounter, 46569 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46569 SdHoareTripleChecker+Valid, 20135 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:20:31,541 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46569 Valid, 20135 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:20:31,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10367 states.
[2023-12-25 22:20:31,605 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 9884.
[2023-12-25 22:20:31,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6746939188505514) internal successors, (16551), 9883 states have internal predecessors, (16551), 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)
[2023-12-25 22:20:31,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16551 transitions.
[2023-12-25 22:20:31,621 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16551 transitions. Word has length 6401
[2023-12-25 22:20:31,622 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:20:31,622 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16551 transitions.
[2023-12-25 22:20:31,624 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1280.2) internal successors, (6401), 4 states have internal predecessors, (6401), 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)
[2023-12-25 22:20:31,624 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16551 transitions.
[2023-12-25 22:20:31,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6403
[2023-12-25 22:20:31,894 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:20:31,895 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:20:32,095 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process
[2023-12-25 22:20:32,122 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-12-25 22:20:32,123 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:20:32,123 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:20:32,123 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:20:32,124 INFO  L85        PathProgramCache]: Analyzing trace with hash -928627506, now seen corresponding path program 1 times
[2023-12-25 22:20:32,124 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:20:32,124 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658213451]
[2023-12-25 22:20:32,126 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:20:32,126 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:20:32,972 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:20:32,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45676697]
[2023-12-25 22:20:32,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:20:32,974 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:20:32,974 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:20:32,975 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:20:32,976 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 22:20:50,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:20:51,386 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63804 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:20:51,491 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:20:52,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:20:52,481 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:20:52,481 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:20:52,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658213451]
[2023-12-25 22:20:52,481 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:20:52,482 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45676697]
[2023-12-25 22:20:52,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [45676697] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:20:52,482 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:20:52,482 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:20:52,483 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171749796]
[2023-12-25 22:20:52,483 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:20:52,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:20:52,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:20:52,491 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:20:52,491 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:20:52,492 INFO  L87              Difference]: Start difference. First operand 9884 states and 16551 transitions. Second operand  has 5 states, 5 states have (on average 1280.4) internal successors, (6402), 4 states have internal predecessors, (6402), 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)
[2023-12-25 22:20:53,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:20:53,237 INFO  L93              Difference]: Finished difference Result 19582 states and 32778 transitions.
[2023-12-25 22:20:53,237 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:20:53,239 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1280.4) internal successors, (6402), 4 states have internal predecessors, (6402), 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 6402
[2023-12-25 22:20:53,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:20:53,248 INFO  L225             Difference]: With dead ends: 19582
[2023-12-25 22:20:53,249 INFO  L226             Difference]: Without dead ends: 10371
[2023-12-25 22:20:53,256 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6402 GetRequests, 6398 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:20:53,256 INFO  L413           NwaCegarLoop]: 16999 mSDtfsCounter, 46563 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46563 SdHoareTripleChecker+Valid, 20144 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:20:53,256 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46563 Valid, 20144 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:20:53,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10371 states.
[2023-12-25 22:20:53,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 9884.
[2023-12-25 22:20:53,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.674592734999494) internal successors, (16550), 9883 states have internal predecessors, (16550), 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)
[2023-12-25 22:20:53,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16550 transitions.
[2023-12-25 22:20:53,349 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16550 transitions. Word has length 6402
[2023-12-25 22:20:53,350 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:20:53,350 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16550 transitions.
[2023-12-25 22:20:53,351 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1280.4) internal successors, (6402), 4 states have internal predecessors, (6402), 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)
[2023-12-25 22:20:53,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16550 transitions.
[2023-12-25 22:20:53,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6404
[2023-12-25 22:20:53,623 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:20:53,624 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:20:53,824 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forcibly destroying the process
[2023-12-25 22:20:53,842 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2023-12-25 22:20:53,843 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-12-25 22:20:53,843 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:20:53,843 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:20:53,844 INFO  L85        PathProgramCache]: Analyzing trace with hash -171906009, now seen corresponding path program 1 times
[2023-12-25 22:20:53,844 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:20:53,844 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358330807]
[2023-12-25 22:20:53,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:20:53,845 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:20:54,740 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:20:54,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791239750]
[2023-12-25 22:20:54,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:20:54,742 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:20:54,742 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:20:54,743 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:20:54,749 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 22:21:12,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:21:13,001 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63805 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:21:13,132 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:21:13,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:21:13,989 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:21:13,990 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:21:13,990 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358330807]
[2023-12-25 22:21:13,990 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:21:13,990 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791239750]
[2023-12-25 22:21:13,990 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791239750] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:21:13,990 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:21:13,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:21:13,991 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185067579]
[2023-12-25 22:21:13,991 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:21:13,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:21:13,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:21:14,000 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:21:14,000 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:21:14,003 INFO  L87              Difference]: Start difference. First operand 9884 states and 16550 transitions. Second operand  has 5 states, 5 states have (on average 1280.6) internal successors, (6403), 4 states have internal predecessors, (6403), 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)
[2023-12-25 22:21:14,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:21:14,855 INFO  L93              Difference]: Finished difference Result 19622 states and 32842 transitions.
[2023-12-25 22:21:14,856 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:21:14,857 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1280.6) internal successors, (6403), 4 states have internal predecessors, (6403), 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 6403
[2023-12-25 22:21:14,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:21:14,866 INFO  L225             Difference]: With dead ends: 19622
[2023-12-25 22:21:14,866 INFO  L226             Difference]: Without dead ends: 10411
[2023-12-25 22:21:14,873 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6403 GetRequests, 6399 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:21:14,874 INFO  L413           NwaCegarLoop]: 17063 mSDtfsCounter, 46533 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46533 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:21:14,874 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46533 Valid, 20273 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-25 22:21:14,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10411 states.
[2023-12-25 22:21:14,944 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 9884.
[2023-12-25 22:21:14,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6744915511484366) internal successors, (16549), 9883 states have internal predecessors, (16549), 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)
[2023-12-25 22:21:14,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16549 transitions.
[2023-12-25 22:21:14,963 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16549 transitions. Word has length 6403
[2023-12-25 22:21:14,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:21:14,964 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16549 transitions.
[2023-12-25 22:21:14,965 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1280.6) internal successors, (6403), 4 states have internal predecessors, (6403), 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)
[2023-12-25 22:21:14,965 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16549 transitions.
[2023-12-25 22:21:15,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6405
[2023-12-25 22:21:15,277 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:21:15,278 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:21:15,479 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forcibly destroying the process
[2023-12-25 22:21:15,485 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-12-25 22:21:15,485 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-12-25 22:21:15,485 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:21:15,485 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:21:15,486 INFO  L85        PathProgramCache]: Analyzing trace with hash -1818667301, now seen corresponding path program 1 times
[2023-12-25 22:21:15,486 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:21:15,486 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706130397]
[2023-12-25 22:21:15,487 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:21:15,487 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:21:16,327 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:21:16,327 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344233570]
[2023-12-25 22:21:16,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:21:16,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:21:16,329 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:21:16,330 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:21:16,332 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 22:21:34,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:21:34,544 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63806 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:21:34,673 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:21:35,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:21:35,493 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:21:35,493 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:21:35,493 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706130397]
[2023-12-25 22:21:35,493 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:21:35,493 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344233570]
[2023-12-25 22:21:35,493 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344233570] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:21:35,493 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:21:35,493 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:21:35,494 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119836231]
[2023-12-25 22:21:35,494 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:21:35,497 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:21:35,497 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:21:35,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:21:35,501 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:21:35,501 INFO  L87              Difference]: Start difference. First operand 9884 states and 16549 transitions. Second operand  has 5 states, 5 states have (on average 1280.8) internal successors, (6404), 4 states have internal predecessors, (6404), 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)
[2023-12-25 22:21:36,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:21:36,230 INFO  L93              Difference]: Finished difference Result 19626 states and 32846 transitions.
[2023-12-25 22:21:36,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:21:36,232 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1280.8) internal successors, (6404), 4 states have internal predecessors, (6404), 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 6404
[2023-12-25 22:21:36,232 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:21:36,239 INFO  L225             Difference]: With dead ends: 19626
[2023-12-25 22:21:36,240 INFO  L226             Difference]: Without dead ends: 10415
[2023-12-25 22:21:36,245 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6404 GetRequests, 6400 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:21:36,245 INFO  L413           NwaCegarLoop]: 17067 mSDtfsCounter, 46527 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46527 SdHoareTripleChecker+Valid, 20282 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:21:36,246 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46527 Valid, 20282 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:21:36,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10415 states.
[2023-12-25 22:21:36,306 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10415 to 9884.
[2023-12-25 22:21:36,313 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6743903672973794) internal successors, (16548), 9883 states have internal predecessors, (16548), 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)
[2023-12-25 22:21:36,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16548 transitions.
[2023-12-25 22:21:36,321 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16548 transitions. Word has length 6404
[2023-12-25 22:21:36,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:21:36,322 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16548 transitions.
[2023-12-25 22:21:36,323 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1280.8) internal successors, (6404), 4 states have internal predecessors, (6404), 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)
[2023-12-25 22:21:36,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16548 transitions.
[2023-12-25 22:21:36,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6406
[2023-12-25 22:21:36,582 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:21:36,583 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:21:36,784 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forcibly destroying the process
[2023-12-25 22:21:36,789 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-12-25 22:21:36,789 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-12-25 22:21:36,789 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:21:36,790 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:21:36,790 INFO  L85        PathProgramCache]: Analyzing trace with hash 1651884188, now seen corresponding path program 1 times
[2023-12-25 22:21:36,790 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:21:36,790 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132868462]
[2023-12-25 22:21:36,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:21:36,791 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:21:37,627 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:21:37,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618389690]
[2023-12-25 22:21:37,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:21:37,629 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:21:37,629 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:21:37,630 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:21:37,631 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 22:21:55,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:21:55,593 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63807 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:21:55,789 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:21:56,665 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:21:56,665 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:21:56,666 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:21:56,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132868462]
[2023-12-25 22:21:56,666 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:21:56,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618389690]
[2023-12-25 22:21:56,666 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [618389690] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:21:56,666 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:21:56,667 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:21:56,667 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384109768]
[2023-12-25 22:21:56,667 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:21:56,670 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:21:56,671 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:21:56,674 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:21:56,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:21:56,675 INFO  L87              Difference]: Start difference. First operand 9884 states and 16548 transitions. Second operand  has 5 states, 5 states have (on average 1281.0) internal successors, (6405), 4 states have internal predecessors, (6405), 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)
[2023-12-25 22:21:57,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:21:57,443 INFO  L93              Difference]: Finished difference Result 19666 states and 32910 transitions.
[2023-12-25 22:21:57,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:21:57,445 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1281.0) internal successors, (6405), 4 states have internal predecessors, (6405), 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 6405
[2023-12-25 22:21:57,445 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:21:57,454 INFO  L225             Difference]: With dead ends: 19666
[2023-12-25 22:21:57,455 INFO  L226             Difference]: Without dead ends: 10455
[2023-12-25 22:21:57,462 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6405 GetRequests, 6401 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:21:57,463 INFO  L413           NwaCegarLoop]: 17131 mSDtfsCounter, 31593 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31593 SdHoareTripleChecker+Valid, 20411 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:21:57,463 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31593 Valid, 20411 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:21:57,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10455 states.
[2023-12-25 22:21:57,541 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 9884.
[2023-12-25 22:21:57,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.674289183446322) internal successors, (16547), 9883 states have internal predecessors, (16547), 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)
[2023-12-25 22:21:57,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16547 transitions.
[2023-12-25 22:21:57,559 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16547 transitions. Word has length 6405
[2023-12-25 22:21:57,559 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:21:57,559 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16547 transitions.
[2023-12-25 22:21:57,560 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1281.0) internal successors, (6405), 4 states have internal predecessors, (6405), 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)
[2023-12-25 22:21:57,561 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16547 transitions.
[2023-12-25 22:21:57,849 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6407
[2023-12-25 22:21:57,849 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:21:57,851 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:21:58,045 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-12-25 22:21:58,051 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:21:58,051 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:21:58,052 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:21:58,052 INFO  L85        PathProgramCache]: Analyzing trace with hash 1843555176, now seen corresponding path program 1 times
[2023-12-25 22:21:58,052 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:21:58,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009166624]
[2023-12-25 22:21:58,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:21:58,053 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:21:58,864 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:21:58,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926768864]
[2023-12-25 22:21:58,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:21:58,866 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:21:58,866 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:21:58,867 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:21:58,869 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 22:22:16,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:22:16,913 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63808 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:22:17,041 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:22:18,016 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:22:18,016 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:22:18,016 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:22:18,016 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009166624]
[2023-12-25 22:22:18,016 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:22:18,016 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926768864]
[2023-12-25 22:22:18,016 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [926768864] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:22:18,017 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:22:18,017 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:22:18,017 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783770529]
[2023-12-25 22:22:18,018 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:22:18,021 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:22:18,021 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:22:18,024 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:22:18,024 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:22:18,025 INFO  L87              Difference]: Start difference. First operand 9884 states and 16547 transitions. Second operand  has 5 states, 5 states have (on average 1281.2) internal successors, (6406), 4 states have internal predecessors, (6406), 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)
[2023-12-25 22:22:18,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:22:18,846 INFO  L93              Difference]: Finished difference Result 19670 states and 32914 transitions.
[2023-12-25 22:22:18,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:22:18,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1281.2) internal successors, (6406), 4 states have internal predecessors, (6406), 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 6406
[2023-12-25 22:22:18,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:22:18,857 INFO  L225             Difference]: With dead ends: 19670
[2023-12-25 22:22:18,858 INFO  L226             Difference]: Without dead ends: 10459
[2023-12-25 22:22:18,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6406 GetRequests, 6402 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:22:18,865 INFO  L413           NwaCegarLoop]: 17135 mSDtfsCounter, 46491 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46491 SdHoareTripleChecker+Valid, 20420 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:22:18,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46491 Valid, 20420 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-25 22:22:18,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10459 states.
[2023-12-25 22:22:18,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 9884.
[2023-12-25 22:22:18,958 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6741879995952647) internal successors, (16546), 9883 states have internal predecessors, (16546), 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)
[2023-12-25 22:22:18,968 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16546 transitions.
[2023-12-25 22:22:18,969 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16546 transitions. Word has length 6406
[2023-12-25 22:22:18,969 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:22:18,969 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16546 transitions.
[2023-12-25 22:22:18,970 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1281.2) internal successors, (6406), 4 states have internal predecessors, (6406), 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)
[2023-12-25 22:22:18,971 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16546 transitions.
[2023-12-25 22:22:19,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6408
[2023-12-25 22:22:19,220 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:22:19,221 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:22:19,421 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forcibly destroying the process
[2023-12-25 22:22:19,432 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-12-25 22:22:19,432 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-12-25 22:22:19,432 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:22:19,434 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:22:19,435 INFO  L85        PathProgramCache]: Analyzing trace with hash 1066117521, now seen corresponding path program 1 times
[2023-12-25 22:22:19,435 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:22:19,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343199584]
[2023-12-25 22:22:19,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:22:19,436 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:22:20,401 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:22:20,402 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201402347]
[2023-12-25 22:22:20,403 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:22:20,404 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:22:20,404 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:22:20,405 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:22:20,408 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 22:22:37,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:22:38,427 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63809 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:22:38,543 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:22:39,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:22:39,525 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:22:39,525 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:22:39,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343199584]
[2023-12-25 22:22:39,525 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:22:39,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201402347]
[2023-12-25 22:22:39,525 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [201402347] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:22:39,525 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:22:39,526 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:22:39,526 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550451366]
[2023-12-25 22:22:39,526 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:22:39,529 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:22:39,529 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:22:39,532 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:22:39,532 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:22:39,533 INFO  L87              Difference]: Start difference. First operand 9884 states and 16546 transitions. Second operand  has 5 states, 5 states have (on average 1281.4) internal successors, (6407), 4 states have internal predecessors, (6407), 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)
[2023-12-25 22:22:40,262 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:22:40,262 INFO  L93              Difference]: Finished difference Result 19710 states and 32978 transitions.
[2023-12-25 22:22:40,262 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:22:40,264 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1281.4) internal successors, (6407), 4 states have internal predecessors, (6407), 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 6407
[2023-12-25 22:22:40,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:22:40,273 INFO  L225             Difference]: With dead ends: 19710
[2023-12-25 22:22:40,273 INFO  L226             Difference]: Without dead ends: 10499
[2023-12-25 22:22:40,280 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6407 GetRequests, 6403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:22:40,281 INFO  L413           NwaCegarLoop]: 17199 mSDtfsCounter, 31589 mSDsluCounter, 3350 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31589 SdHoareTripleChecker+Valid, 20549 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:22:40,281 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31589 Valid, 20549 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:22:40,291 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10499 states.
[2023-12-25 22:22:40,358 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10499 to 9884.
[2023-12-25 22:22:40,367 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6740868157442073) internal successors, (16545), 9883 states have internal predecessors, (16545), 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)
[2023-12-25 22:22:40,376 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16545 transitions.
[2023-12-25 22:22:40,377 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16545 transitions. Word has length 6407
[2023-12-25 22:22:40,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:22:40,377 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16545 transitions.
[2023-12-25 22:22:40,379 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1281.4) internal successors, (6407), 4 states have internal predecessors, (6407), 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)
[2023-12-25 22:22:40,379 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16545 transitions.
[2023-12-25 22:22:40,719 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6409
[2023-12-25 22:22:40,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:22:40,721 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:22:40,921 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forcibly destroying the process
[2023-12-25 22:22:40,939 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2023-12-25 22:22:40,940 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:22:40,940 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:22:40,940 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:22:40,941 INFO  L85        PathProgramCache]: Analyzing trace with hash 759366261, now seen corresponding path program 1 times
[2023-12-25 22:22:40,941 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:22:40,941 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981549389]
[2023-12-25 22:22:40,942 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:22:40,943 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:22:41,886 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:22:41,886 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780025804]
[2023-12-25 22:22:41,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:22:41,888 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:22:41,889 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:22:41,890 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:22:41,892 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-12-25 22:22:59,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:23:00,069 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63810 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:23:00,202 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:23:01,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:23:01,215 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:23:01,215 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:23:01,215 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981549389]
[2023-12-25 22:23:01,215 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:23:01,215 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780025804]
[2023-12-25 22:23:01,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780025804] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:23:01,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:23:01,216 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:23:01,216 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371282456]
[2023-12-25 22:23:01,216 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:23:01,219 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:23:01,219 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:23:01,222 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:23:01,222 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:23:01,224 INFO  L87              Difference]: Start difference. First operand 9884 states and 16545 transitions. Second operand  has 5 states, 5 states have (on average 1281.6) internal successors, (6408), 4 states have internal predecessors, (6408), 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)
[2023-12-25 22:23:02,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:23:02,029 INFO  L93              Difference]: Finished difference Result 19714 states and 32982 transitions.
[2023-12-25 22:23:02,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:23:02,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1281.6) internal successors, (6408), 4 states have internal predecessors, (6408), 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 6408
[2023-12-25 22:23:02,032 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:23:02,040 INFO  L225             Difference]: With dead ends: 19714
[2023-12-25 22:23:02,040 INFO  L226             Difference]: Without dead ends: 10503
[2023-12-25 22:23:02,046 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6408 GetRequests, 6404 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:23:02,046 INFO  L413           NwaCegarLoop]: 17203 mSDtfsCounter, 31587 mSDsluCounter, 3355 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31587 SdHoareTripleChecker+Valid, 20558 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:23:02,047 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31587 Valid, 20558 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-25 22:23:02,058 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10503 states.
[2023-12-25 22:23:02,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 9884.
[2023-12-25 22:23:02,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6739856318931499) internal successors, (16544), 9883 states have internal predecessors, (16544), 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)
[2023-12-25 22:23:02,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16544 transitions.
[2023-12-25 22:23:02,142 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16544 transitions. Word has length 6408
[2023-12-25 22:23:02,142 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:23:02,142 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16544 transitions.
[2023-12-25 22:23:02,144 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1281.6) internal successors, (6408), 4 states have internal predecessors, (6408), 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)
[2023-12-25 22:23:02,144 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16544 transitions.
[2023-12-25 22:23:02,392 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6410
[2023-12-25 22:23:02,392 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:23:02,393 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:23:02,594 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forcibly destroying the process
[2023-12-25 22:23:02,623 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-12-25 22:23:02,624 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2023-12-25 22:23:02,624 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:23:02,624 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:23:02,625 INFO  L85        PathProgramCache]: Analyzing trace with hash 1066510086, now seen corresponding path program 1 times
[2023-12-25 22:23:02,625 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:23:02,625 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209919824]
[2023-12-25 22:23:02,625 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:23:02,626 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:23:03,500 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:23:03,500 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316492616]
[2023-12-25 22:23:03,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:23:03,696 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:23:03,696 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:23:03,701 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:23:03,702 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-12-25 22:23:21,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:23:21,715 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63811 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:23:22,089 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:23:23,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:23:23,067 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:23:23,067 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:23:23,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209919824]
[2023-12-25 22:23:23,067 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:23:23,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316492616]
[2023-12-25 22:23:23,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [316492616] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:23:23,067 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:23:23,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:23:23,068 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150110778]
[2023-12-25 22:23:23,068 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:23:23,071 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:23:23,071 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:23:23,074 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:23:23,074 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:23:23,075 INFO  L87              Difference]: Start difference. First operand 9884 states and 16544 transitions. Second operand  has 5 states, 5 states have (on average 1281.8) internal successors, (6409), 4 states have internal predecessors, (6409), 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)
[2023-12-25 22:23:23,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:23:23,900 INFO  L93              Difference]: Finished difference Result 19754 states and 33046 transitions.
[2023-12-25 22:23:23,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:23:23,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1281.8) internal successors, (6409), 4 states have internal predecessors, (6409), 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 6409
[2023-12-25 22:23:23,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:23:23,911 INFO  L225             Difference]: With dead ends: 19754
[2023-12-25 22:23:23,912 INFO  L226             Difference]: Without dead ends: 10543
[2023-12-25 22:23:23,918 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6409 GetRequests, 6405 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:23:23,919 INFO  L413           NwaCegarLoop]: 17267 mSDtfsCounter, 46425 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46425 SdHoareTripleChecker+Valid, 20687 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:23:23,919 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46425 Valid, 20687 Invalid, 381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:23:23,929 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10543 states.
[2023-12-25 22:23:23,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 9884.
[2023-12-25 22:23:24,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6738844480420925) internal successors, (16543), 9883 states have internal predecessors, (16543), 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)
[2023-12-25 22:23:24,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16543 transitions.
[2023-12-25 22:23:24,015 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16543 transitions. Word has length 6409
[2023-12-25 22:23:24,016 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:23:24,016 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16543 transitions.
[2023-12-25 22:23:24,017 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1281.8) internal successors, (6409), 4 states have internal predecessors, (6409), 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)
[2023-12-25 22:23:24,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16543 transitions.
[2023-12-25 22:23:24,308 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6411
[2023-12-25 22:23:24,308 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:23:24,309 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:23:24,510 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forcibly destroying the process
[2023-12-25 22:23:24,514 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2023-12-25 22:23:24,514 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:23:24,514 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:23:24,514 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:23:24,515 INFO  L85        PathProgramCache]: Analyzing trace with hash 1284283394, now seen corresponding path program 1 times
[2023-12-25 22:23:24,515 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:23:24,515 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18738246]
[2023-12-25 22:23:24,516 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:23:24,516 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:23:25,320 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:23:25,320 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557117495]
[2023-12-25 22:23:25,322 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:23:25,322 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:23:25,322 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:23:25,323 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:23:25,324 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-12-25 22:23:42,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:23:43,485 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63812 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:23:43,731 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:23:44,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:23:44,658 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:23:44,658 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:23:44,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18738246]
[2023-12-25 22:23:44,658 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:23:44,658 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557117495]
[2023-12-25 22:23:44,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [557117495] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:23:44,658 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:23:44,659 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:23:44,659 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780884232]
[2023-12-25 22:23:44,659 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:23:44,662 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:23:44,662 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:23:44,664 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:23:44,664 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:23:44,665 INFO  L87              Difference]: Start difference. First operand 9884 states and 16543 transitions. Second operand  has 5 states, 5 states have (on average 1282.0) internal successors, (6410), 4 states have internal predecessors, (6410), 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)
[2023-12-25 22:23:45,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:23:45,426 INFO  L93              Difference]: Finished difference Result 19758 states and 33050 transitions.
[2023-12-25 22:23:45,427 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:23:45,428 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1282.0) internal successors, (6410), 4 states have internal predecessors, (6410), 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 6410
[2023-12-25 22:23:45,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:23:45,438 INFO  L225             Difference]: With dead ends: 19758
[2023-12-25 22:23:45,438 INFO  L226             Difference]: Without dead ends: 10547
[2023-12-25 22:23:45,445 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6410 GetRequests, 6406 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:23:45,446 INFO  L413           NwaCegarLoop]: 17271 mSDtfsCounter, 31583 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31583 SdHoareTripleChecker+Valid, 20696 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:23:45,446 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31583 Valid, 20696 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-25 22:23:45,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10547 states.
[2023-12-25 22:23:45,517 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 9884.
[2023-12-25 22:23:45,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.673783264191035) internal successors, (16542), 9883 states have internal predecessors, (16542), 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)
[2023-12-25 22:23:45,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16542 transitions.
[2023-12-25 22:23:45,535 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16542 transitions. Word has length 6410
[2023-12-25 22:23:45,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:23:45,536 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16542 transitions.
[2023-12-25 22:23:45,537 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1282.0) internal successors, (6410), 4 states have internal predecessors, (6410), 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)
[2023-12-25 22:23:45,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16542 transitions.
[2023-12-25 22:23:45,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6412
[2023-12-25 22:23:45,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:23:45,783 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:23:45,983 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forcibly destroying the process
[2023-12-25 22:23:46,007 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2023-12-25 22:23:46,007 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:23:46,008 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:23:46,008 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:23:46,009 INFO  L85        PathProgramCache]: Analyzing trace with hash -1345931013, now seen corresponding path program 1 times
[2023-12-25 22:23:46,009 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:23:46,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269202209]
[2023-12-25 22:23:46,009 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:23:46,009 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:23:46,941 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:23:46,942 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736283563]
[2023-12-25 22:23:46,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:23:46,943 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:23:46,943 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:23:46,944 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:23:46,945 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-12-25 22:24:04,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:24:05,041 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63813 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:24:05,169 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:24:06,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:24:06,215 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:24:06,216 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:24:06,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269202209]
[2023-12-25 22:24:06,216 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:24:06,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736283563]
[2023-12-25 22:24:06,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736283563] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:24:06,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:24:06,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:24:06,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729862474]
[2023-12-25 22:24:06,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:24:06,219 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:24:06,219 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:24:06,222 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:24:06,222 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:24:06,222 INFO  L87              Difference]: Start difference. First operand 9884 states and 16542 transitions. Second operand  has 5 states, 5 states have (on average 1282.2) internal successors, (6411), 4 states have internal predecessors, (6411), 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)
[2023-12-25 22:24:06,927 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:24:06,927 INFO  L93              Difference]: Finished difference Result 19798 states and 33114 transitions.
[2023-12-25 22:24:06,927 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:24:06,929 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1282.2) internal successors, (6411), 4 states have internal predecessors, (6411), 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 6411
[2023-12-25 22:24:06,929 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:24:06,938 INFO  L225             Difference]: With dead ends: 19798
[2023-12-25 22:24:06,938 INFO  L226             Difference]: Without dead ends: 10587
[2023-12-25 22:24:06,945 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6411 GetRequests, 6407 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:24:06,945 INFO  L413           NwaCegarLoop]: 17335 mSDtfsCounter, 31581 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31581 SdHoareTripleChecker+Valid, 20825 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:24:06,946 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31581 Valid, 20825 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:24:06,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10587 states.
[2023-12-25 22:24:07,013 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10587 to 9884.
[2023-12-25 22:24:07,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6736820803399777) internal successors, (16541), 9883 states have internal predecessors, (16541), 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)
[2023-12-25 22:24:07,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16541 transitions.
[2023-12-25 22:24:07,030 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16541 transitions. Word has length 6411
[2023-12-25 22:24:07,030 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:24:07,030 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16541 transitions.
[2023-12-25 22:24:07,032 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1282.2) internal successors, (6411), 4 states have internal predecessors, (6411), 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)
[2023-12-25 22:24:07,032 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16541 transitions.
[2023-12-25 22:24:07,290 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6413
[2023-12-25 22:24:07,290 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:24:07,291 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:24:07,492 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forcibly destroying the process
[2023-12-25 22:24:07,496 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-12-25 22:24:07,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:24:07,497 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:24:07,497 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:24:07,497 INFO  L85        PathProgramCache]: Analyzing trace with hash 1872803855, now seen corresponding path program 1 times
[2023-12-25 22:24:07,498 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:24:07,498 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280278798]
[2023-12-25 22:24:07,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:24:07,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:24:08,347 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:24:08,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69971215]
[2023-12-25 22:24:08,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:24:08,349 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:24:08,349 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:24:08,350 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:24:08,350 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-12-25 22:24:26,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:24:26,608 INFO  L262         TraceCheckSpWp]: Trace formula consists of 63814 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 22:24:26,724 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:24:27,680 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:24:27,680 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:24:27,680 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:24:27,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280278798]
[2023-12-25 22:24:27,680 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:24:27,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69971215]
[2023-12-25 22:24:27,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [69971215] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:24:27,680 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:24:27,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:24:27,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367864566]
[2023-12-25 22:24:27,683 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:24:27,689 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:24:27,689 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:24:27,691 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:24:27,692 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:24:27,692 INFO  L87              Difference]: Start difference. First operand 9884 states and 16541 transitions. Second operand  has 5 states, 5 states have (on average 1282.4) internal successors, (6412), 4 states have internal predecessors, (6412), 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)
[2023-12-25 22:24:28,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:24:28,470 INFO  L93              Difference]: Finished difference Result 19802 states and 33118 transitions.
[2023-12-25 22:24:28,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:24:28,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1282.4) internal successors, (6412), 4 states have internal predecessors, (6412), 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 6412
[2023-12-25 22:24:28,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:24:28,481 INFO  L225             Difference]: With dead ends: 19802
[2023-12-25 22:24:28,481 INFO  L226             Difference]: Without dead ends: 10591
[2023-12-25 22:24:28,488 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6412 GetRequests, 6408 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 22:24:28,489 INFO  L413           NwaCegarLoop]: 17339 mSDtfsCounter, 46383 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46383 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:24:28,489 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46383 Valid, 20834 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-25 22:24:28,498 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10591 states.
[2023-12-25 22:24:28,573 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10591 to 9884.
[2023-12-25 22:24:28,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9884 states, 9883 states have (on average 1.6735808964889203) internal successors, (16540), 9883 states have internal predecessors, (16540), 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)
[2023-12-25 22:24:28,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 16540 transitions.
[2023-12-25 22:24:28,591 INFO  L78                 Accepts]: Start accepts. Automaton has 9884 states and 16540 transitions. Word has length 6412
[2023-12-25 22:24:28,592 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:24:28,592 INFO  L495      AbstractCegarLoop]: Abstraction has 9884 states and 16540 transitions.
[2023-12-25 22:24:28,593 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1282.4) internal successors, (6412), 4 states have internal predecessors, (6412), 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)
[2023-12-25 22:24:28,593 INFO  L276                IsEmpty]: Start isEmpty. Operand 9884 states and 16540 transitions.
[2023-12-25 22:24:28,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6414
[2023-12-25 22:24:28,862 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:24:28,864 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 22:24:29,064 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forcibly destroying the process
[2023-12-25 22:24:29,065 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0
[2023-12-25 22:24:29,065 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2023-12-25 22:24:29,065 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:24:29,066 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:24:29,066 INFO  L85        PathProgramCache]: Analyzing trace with hash -1810243728, now seen corresponding path program 1 times
[2023-12-25 22:24:29,066 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:24:29,067 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029208517]
[2023-12-25 22:24:29,067 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:24:29,067 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:24:30,135 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:24:30,135 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270612601]
[2023-12-25 22:24:30,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:24:30,137 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:24:30,137 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:24:30,138 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:24:30,144 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-25 22:24:46,222 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 22:24:46,222 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
[2023-12-25 22:24:47,422 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process
[2023-12-25 22:24:47,424 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forcibly destroying the process
[2023-12-25 22:24:47,454 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137
[2023-12-25 22:24:47,469 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 137
[2023-12-25 22:24:47,469 ERROR L246   FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user
[2023-12-25 22:24:47,472 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 22:24:47,472 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2023-12-25 22:24:47,472 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 6414 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
[2023-12-25 22:24:47,475 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:24:47,476 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 22:24:47,478 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 10:24:47 BoogieIcfgContainer
[2023-12-25 22:24:47,478 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 22:24:47,478 INFO  L158              Benchmark]: Toolchain (without parser) took 746744.58ms. Allocated memory was 252.7MB in the beginning and 6.4GB in the end (delta: 6.2GB). Free memory was 198.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 5.2GB. Max. memory is 8.0GB.
[2023-12-25 22:24:47,478 INFO  L158              Benchmark]: CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 22:24:47,479 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 3743.90ms. Allocated memory was 252.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 198.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 385.5MB. Max. memory is 8.0GB.
[2023-12-25 22:24:47,479 INFO  L158              Benchmark]: Boogie Procedure Inliner took 3915.66ms. Allocated memory was 1.9GB in the beginning and 4.1GB in the end (delta: 2.2GB). Free memory was 1.5GB in the beginning and 3.1GB in the end (delta: -1.6GB). Peak memory consumption was 637.9MB. Max. memory is 8.0GB.
[2023-12-25 22:24:47,479 INFO  L158              Benchmark]: Boogie Preprocessor took 4597.11ms. Allocated memory was 4.1GB in the beginning and 5.7GB in the end (delta: 1.6GB). Free memory was 3.1GB in the beginning and 4.3GB in the end (delta: -1.2GB). Peak memory consumption was 355.5MB. Max. memory is 8.0GB.
[2023-12-25 22:24:47,479 INFO  L158              Benchmark]: RCFGBuilder took 35687.31ms. Allocated memory was 5.7GB in the beginning and 6.4GB in the end (delta: 749.7MB). Free memory was 4.3GB in the beginning and 4.9GB in the end (delta: -551.6MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB.
[2023-12-25 22:24:47,479 INFO  L158              Benchmark]: TraceAbstraction took 698794.02ms. Allocated memory is still 6.4GB. Free memory was 4.9GB in the beginning and 1.2GB in the end (delta: 3.6GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB.
[2023-12-25 22:24:47,480 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 3743.90ms. Allocated memory was 252.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 198.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 385.5MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 3915.66ms. Allocated memory was 1.9GB in the beginning and 4.1GB in the end (delta: 2.2GB). Free memory was 1.5GB in the beginning and 3.1GB in the end (delta: -1.6GB). Peak memory consumption was 637.9MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 4597.11ms. Allocated memory was 4.1GB in the beginning and 5.7GB in the end (delta: 1.6GB). Free memory was 3.1GB in the beginning and 4.3GB in the end (delta: -1.2GB). Peak memory consumption was 355.5MB. Max. memory is 8.0GB.
 * RCFGBuilder took 35687.31ms. Allocated memory was 5.7GB in the beginning and 6.4GB in the end (delta: 749.7MB). Free memory was 4.3GB in the beginning and 4.9GB in the end (delta: -551.6MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB.
 * TraceAbstraction took 698794.02ms. Allocated memory is still 6.4GB. Free memory was 4.9GB in the beginning and 1.2GB in the end (delta: 3.6GB). Peak memory consumption was 3.7GB. 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: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 6414 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 9850 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 698.7s, OverallIterations: 36, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 9.0s, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1343670 SdHoareTripleChecker+Valid, 32.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1343670 mSDsluCounter, 859926 SdHoareTripleChecker+Invalid, 27.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 278764 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26412 IncrementalHoareTripleChecker+Invalid, 26415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 581162 mSDtfsCounter, 26412 mSolverCounterSat, 1.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191958 GetRequests, 191819 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9884occurred in iteration=4, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 35 MinimizatonAttempts, 39486 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 123.8s SsaConstructionTime, 335.2s SatisfiabilityAnalysisTime, 50.9s InterpolantComputationTime, 194214 NumberOfCodeBlocks, 194214 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 194179 ConstructedInterpolants, 0 QuantifiedInterpolants, 245015 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1913985 ConjunctsInSsa, 302 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 810/810 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