/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label52.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 00:35:46,114 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 00:35:46,116 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 00:35:46,181 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 00:35:46,182 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 00:35:46,183 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 00:35:46,184 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 00:35:46,190 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 00:35:46,191 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 00:35:46,192 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 00:35:46,193 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 00:35:46,193 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 00:35:46,194 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 00:35:46,197 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 00:35:46,199 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 00:35:46,200 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 00:35:46,208 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 00:35:46,209 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 00:35:46,210 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 00:35:46,212 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 00:35:46,212 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 00:35:46,213 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 00:35:46,213 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 00:35:46,214 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 00:35:46,214 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 00:35:46,215 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 00:35:46,216 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 00:35:46,216 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 00:35:46,217 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 00:35:46,217 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 00:35:46,218 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 00:35:46,218 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 00:35:46,218 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 00:35:46,219 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 00:35:46,224 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf
[2022-01-10 00:35:46,254 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 00:35:46,254 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 00:35:46,254 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 00:35:46,254 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 00:35:46,262 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 00:35:46,262 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 00:35:46,263 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 00:35:46,263 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 00:35:46,263 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 00:35:46,264 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 00:35:46,264 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 00:35:46,265 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 00:35:46,265 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 00:35:46,266 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 00:35:46,266 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 00:35:46,266 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 00:35:46,266 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 00:35:46,266 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 00:35:46,267 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 00:35:46,267 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 00:35:46,267 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 00:35:46,267 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 00:35:46,267 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 00:35:46,267 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 00:35:46,515 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 00:35:46,540 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 00:35:46,541 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 00:35:46,542 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 00:35:46,543 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 00:35:46,544 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label52.c
[2022-01-10 00:35:46,595 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08057d4cb/f2e80ed3ef934046b68ab959ffa35de9/FLAG056e36612
[2022-01-10 00:35:47,444 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 00:35:47,445 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label52.c
[2022-01-10 00:35:47,494 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08057d4cb/f2e80ed3ef934046b68ab959ffa35de9/FLAG056e36612
[2022-01-10 00:35:47,906 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08057d4cb/f2e80ed3ef934046b68ab959ffa35de9
[2022-01-10 00:35:47,908 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 00:35:47,909 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 00:35:47,910 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 00:35:47,910 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 00:35:47,912 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 00:35:47,912 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:47" (1/1) ...
[2022-01-10 00:35:47,913 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5761e2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:47, skipping insertion in model container
[2022-01-10 00:35:47,913 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:47" (1/1) ...
[2022-01-10 00:35:47,918 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 00:35:48,058 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 00:35:48,389 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label52.c[7226,7239]
[2022-01-10 00:35:49,458 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 00:35:49,465 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 00:35:49,529 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label52.c[7226,7239]
[2022-01-10 00:35:50,169 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 00:35:50,205 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 00:35:50,205 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50 WrapperNode
[2022-01-10 00:35:50,207 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 00:35:50,208 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 00:35:50,208 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 00:35:50,208 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 00:35:50,214 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:50,286 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:51,090 INFO  L137                Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425
[2022-01-10 00:35:51,091 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 00:35:51,092 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 00:35:51,092 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 00:35:51,092 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 00:35:51,099 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:51,099 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:51,353 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:51,353 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:51,790 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:51,883 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:52,069 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:52,276 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 00:35:52,277 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 00:35:52,278 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 00:35:52,278 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 00:35:52,278 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (1/1) ...
[2022-01-10 00:35:52,284 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 00:35:52,294 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 00:35:52,308 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 00:35:52,320 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 00:35:52,349 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 00:35:52,350 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-10 00:35:52,350 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 00:35:52,350 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 00:35:52,431 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 00:35:52,432 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 00:35:59,397 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 00:35:59,424 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 00:35:59,424 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 00:35:59,429 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:59 BoogieIcfgContainer
[2022-01-10 00:35:59,430 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 00:35:59,431 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 00:35:59,431 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 00:35:59,434 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 00:35:59,435 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:35:47" (1/3) ...
[2022-01-10 00:35:59,435 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5946b165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:59, skipping insertion in model container
[2022-01-10 00:35:59,435 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:50" (2/3) ...
[2022-01-10 00:35:59,436 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5946b165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:59, skipping insertion in model container
[2022-01-10 00:35:59,436 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:59" (3/3) ...
[2022-01-10 00:35:59,437 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem19_label52.c
[2022-01-10 00:35:59,443 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 00:35:59,444 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 00:35:59,501 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 00:35:59,509 INFO  L339      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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 00:35:59,509 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 00:35:59,556 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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)
[2022-01-10 00:35:59,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2022-01-10 00:35:59,574 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 00:35:59,575 INFO  L514         BasicCegarLoop]: 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]
[2022-01-10 00:35:59,575 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 00:35:59,579 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 00:35:59,580 INFO  L85        PathProgramCache]: Analyzing trace with hash 1246856209, now seen corresponding path program 1 times
[2022-01-10 00:35:59,587 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 00:35:59,588 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873607525]
[2022-01-10 00:35:59,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:35:59,589 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 00:35:59,727 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:00,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 00:36:00,022 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 00:36:00,022 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873607525]
[2022-01-10 00:36:00,023 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873607525] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 00:36:00,023 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 00:36:00,023 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 00:36:00,025 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826152606]
[2022-01-10 00:36:00,025 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 00:36:00,029 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 00:36:00,030 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 00:36:00,057 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 00:36:00,059 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 00:36:00,064 INFO  L87              Difference]: Start difference. First operand  has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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)
[2022-01-10 00:36:06,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 00:36:06,997 INFO  L93              Difference]: Finished difference Result 4957 states and 9398 transitions.
[2022-01-10 00:36:06,998 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 00:36:06,999 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55
[2022-01-10 00:36:06,999 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 00:36:07,030 INFO  L225             Difference]: With dead ends: 4957
[2022-01-10 00:36:07,030 INFO  L226             Difference]: Without dead ends: 3129
[2022-01-10 00:36:07,042 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 00:36:07,046 INFO  L933         BasicCegarLoop]: 1373 mSDtfsCounter, 1571 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2022-01-10 00:36:07,050 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2022-01-10 00:36:07,072 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3129 states.
[2022-01-10 00:36:07,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108.
[2022-01-10 00:36:07,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 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)
[2022-01-10 00:36:07,203 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions.
[2022-01-10 00:36:07,204 INFO  L78                 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 55
[2022-01-10 00:36:07,206 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 00:36:07,206 INFO  L470      AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions.
[2022-01-10 00:36:07,206 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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)
[2022-01-10 00:36:07,206 INFO  L276                IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions.
[2022-01-10 00:36:07,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2022-01-10 00:36:07,214 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 00:36:07,214 INFO  L514         BasicCegarLoop]: 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, 2, 2, 2, 2, 2, 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]
[2022-01-10 00:36:07,214 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 00:36:07,215 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 00:36:07,216 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 00:36:07,216 INFO  L85        PathProgramCache]: Analyzing trace with hash -1604718068, now seen corresponding path program 1 times
[2022-01-10 00:36:07,216 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 00:36:07,216 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115223432]
[2022-01-10 00:36:07,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:07,217 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 00:36:07,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:07,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 00:36:07,392 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 00:36:07,393 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115223432]
[2022-01-10 00:36:07,393 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115223432] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 00:36:07,393 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 00:36:07,393 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 00:36:07,393 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300501353]
[2022-01-10 00:36:07,393 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 00:36:07,395 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 00:36:07,395 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 00:36:07,395 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 00:36:07,395 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 00:36:07,396 INFO  L87              Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand  has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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)
[2022-01-10 00:36:16,783 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 00:36:16,783 INFO  L93              Difference]: Finished difference Result 10359 states and 16187 transitions.
[2022-01-10 00:36:16,784 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 00:36:16,785 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 122
[2022-01-10 00:36:16,785 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 00:36:16,811 INFO  L225             Difference]: With dead ends: 10359
[2022-01-10 00:36:16,811 INFO  L226             Difference]: Without dead ends: 7253
[2022-01-10 00:36:16,815 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 00:36:16,817 INFO  L933         BasicCegarLoop]: 1024 mSDtfsCounter, 4321 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 11004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2022-01-10 00:36:16,817 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4321 Valid, 1292 Invalid, 11004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1500 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time]
[2022-01-10 00:36:16,824 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7253 states.
[2022-01-10 00:36:16,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249.
[2022-01-10 00:36:16,947 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7249 states, 7248 states have (on average 1.4503311258278146) internal successors, (10512), 7248 states have internal predecessors, (10512), 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)
[2022-01-10 00:36:16,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10512 transitions.
[2022-01-10 00:36:16,962 INFO  L78                 Accepts]: Start accepts. Automaton has 7249 states and 10512 transitions. Word has length 122
[2022-01-10 00:36:16,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 00:36:16,965 INFO  L470      AbstractCegarLoop]: Abstraction has 7249 states and 10512 transitions.
[2022-01-10 00:36:16,966 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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)
[2022-01-10 00:36:16,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 7249 states and 10512 transitions.
[2022-01-10 00:36:16,976 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2022-01-10 00:36:16,976 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 00:36:16,977 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2022-01-10 00:36:16,977 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 00:36:16,977 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 00:36:16,978 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 00:36:16,978 INFO  L85        PathProgramCache]: Analyzing trace with hash 1152810954, now seen corresponding path program 1 times
[2022-01-10 00:36:16,978 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 00:36:16,979 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806433115]
[2022-01-10 00:36:16,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:16,979 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 00:36:17,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:17,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 169 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2022-01-10 00:36:17,359 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 00:36:17,359 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806433115]
[2022-01-10 00:36:17,359 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806433115] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 00:36:17,360 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 00:36:17,360 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 00:36:17,360 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905569435]
[2022-01-10 00:36:17,360 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 00:36:17,361 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 00:36:17,361 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 00:36:17,362 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 00:36:17,362 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 00:36:17,362 INFO  L87              Difference]: Start difference. First operand 7249 states and 10512 transitions. Second operand  has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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)
[2022-01-10 00:36:25,813 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 00:36:25,813 INFO  L93              Difference]: Finished difference Result 17269 states and 24867 transitions.
[2022-01-10 00:36:25,813 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 00:36:25,814 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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 329
[2022-01-10 00:36:25,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 00:36:25,847 INFO  L225             Difference]: With dead ends: 17269
[2022-01-10 00:36:25,847 INFO  L226             Difference]: Without dead ends: 11387
[2022-01-10 00:36:25,859 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 00:36:25,860 INFO  L933         BasicCegarLoop]: 1803 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-01-10 00:36:25,861 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 2157 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-01-10 00:36:25,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11387 states.
[2022-01-10 00:36:26,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367.
[2022-01-10 00:36:26,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11367 states, 11366 states have (on average 1.3286116487770543) internal successors, (15101), 11366 states have internal predecessors, (15101), 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)
[2022-01-10 00:36:26,083 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15101 transitions.
[2022-01-10 00:36:26,084 INFO  L78                 Accepts]: Start accepts. Automaton has 11367 states and 15101 transitions. Word has length 329
[2022-01-10 00:36:26,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 00:36:26,085 INFO  L470      AbstractCegarLoop]: Abstraction has 11367 states and 15101 transitions.
[2022-01-10 00:36:26,085 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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)
[2022-01-10 00:36:26,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 11367 states and 15101 transitions.
[2022-01-10 00:36:26,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 358
[2022-01-10 00:36:26,089 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 00:36:26,090 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2022-01-10 00:36:26,090 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 00:36:26,091 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 00:36:26,091 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 00:36:26,091 INFO  L85        PathProgramCache]: Analyzing trace with hash 1180990372, now seen corresponding path program 1 times
[2022-01-10 00:36:26,091 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 00:36:26,091 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842559787]
[2022-01-10 00:36:26,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:26,092 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 00:36:26,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:26,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 169 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2022-01-10 00:36:26,443 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 00:36:26,443 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842559787]
[2022-01-10 00:36:26,443 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842559787] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 00:36:26,443 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 00:36:26,443 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 00:36:26,443 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224437993]
[2022-01-10 00:36:26,443 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 00:36:26,444 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 00:36:26,444 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 00:36:26,445 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 00:36:26,445 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 00:36:26,445 INFO  L87              Difference]: Start difference. First operand 11367 states and 15101 transitions. Second operand  has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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)
[2022-01-10 00:36:32,648 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 00:36:32,648 INFO  L93              Difference]: Finished difference Result 20033 states and 27483 transitions.
[2022-01-10 00:36:32,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 00:36:32,649 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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 357
[2022-01-10 00:36:32,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 00:36:32,681 INFO  L225             Difference]: With dead ends: 20033
[2022-01-10 00:36:32,681 INFO  L226             Difference]: Without dead ends: 11367
[2022-01-10 00:36:32,691 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 00:36:32,693 INFO  L933         BasicCegarLoop]: 1775 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2022-01-10 00:36:32,693 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2022-01-10 00:36:32,705 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11367 states.
[2022-01-10 00:36:32,838 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367.
[2022-01-10 00:36:32,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11367 states, 11366 states have (on average 1.3274678866795706) internal successors, (15088), 11366 states have internal predecessors, (15088), 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)
[2022-01-10 00:36:32,874 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15088 transitions.
[2022-01-10 00:36:32,874 INFO  L78                 Accepts]: Start accepts. Automaton has 11367 states and 15088 transitions. Word has length 357
[2022-01-10 00:36:32,875 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 00:36:32,875 INFO  L470      AbstractCegarLoop]: Abstraction has 11367 states and 15088 transitions.
[2022-01-10 00:36:32,876 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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)
[2022-01-10 00:36:32,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 11367 states and 15088 transitions.
[2022-01-10 00:36:32,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 543
[2022-01-10 00:36:32,883 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 00:36:32,884 INFO  L514         BasicCegarLoop]: 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, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 00:36:32,884 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-10 00:36:32,884 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 00:36:32,884 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 00:36:32,885 INFO  L85        PathProgramCache]: Analyzing trace with hash 507263328, now seen corresponding path program 1 times
[2022-01-10 00:36:32,885 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 00:36:32,885 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815567478]
[2022-01-10 00:36:32,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:32,885 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 00:36:32,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:33,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-01-10 00:36:33,169 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 00:36:33,169 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815567478]
[2022-01-10 00:36:33,169 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815567478] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 00:36:33,169 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149191951]
[2022-01-10 00:36:33,169 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:33,171 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 00:36:33,171 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 00:36:33,176 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)
[2022-01-10 00:36:33,177 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 00:36:33,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:33,372 INFO  L263         TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 00:36:33,397 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 00:36:34,457 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2022-01-10 00:36:34,457 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 00:36:34,458 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149191951] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 00:36:34,458 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 00:36:34,458 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2022-01-10 00:36:34,458 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125995984]
[2022-01-10 00:36:34,458 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 00:36:34,459 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 00:36:34,459 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 00:36:34,460 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 00:36:34,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-10 00:36:34,460 INFO  L87              Difference]: Start difference. First operand 11367 states and 15088 transitions. Second operand  has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 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)
[2022-01-10 00:36:39,479 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 00:36:39,480 INFO  L93              Difference]: Finished difference Result 24133 states and 33157 transitions.
[2022-01-10 00:36:39,483 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 00:36:39,483 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 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 542
[2022-01-10 00:36:39,484 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 00:36:39,515 INFO  L225             Difference]: With dead ends: 24133
[2022-01-10 00:36:39,515 INFO  L226             Difference]: Without dead ends: 15498
[2022-01-10 00:36:39,525 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-10 00:36:39,526 INFO  L933         BasicCegarLoop]: 1207 mSDtfsCounter, 1058 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4576 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 5385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 4576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-01-10 00:36:39,526 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 1384 Invalid, 5385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 4576 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-01-10 00:36:39,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15498 states.
[2022-01-10 00:36:39,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15498 to 15496.
[2022-01-10 00:36:39,699 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15496 states, 15495 states have (on average 1.2933849628912553) internal successors, (20041), 15495 states have internal predecessors, (20041), 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)
[2022-01-10 00:36:39,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15496 states to 15496 states and 20041 transitions.
[2022-01-10 00:36:39,720 INFO  L78                 Accepts]: Start accepts. Automaton has 15496 states and 20041 transitions. Word has length 542
[2022-01-10 00:36:39,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 00:36:39,721 INFO  L470      AbstractCegarLoop]: Abstraction has 15496 states and 20041 transitions.
[2022-01-10 00:36:39,723 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 2 states have internal predecessors, (491), 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)
[2022-01-10 00:36:39,723 INFO  L276                IsEmpty]: Start isEmpty. Operand 15496 states and 20041 transitions.
[2022-01-10 00:36:39,738 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 612
[2022-01-10 00:36:39,739 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 00:36:39,739 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 00:36:39,766 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 00:36:39,955 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 00:36:39,956 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 00:36:39,956 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 00:36:39,956 INFO  L85        PathProgramCache]: Analyzing trace with hash -1923004853, now seen corresponding path program 1 times
[2022-01-10 00:36:39,956 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 00:36:39,956 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368969797]
[2022-01-10 00:36:39,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:39,957 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 00:36:40,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:40,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 171 backedges. 127 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 00:36:40,277 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 00:36:40,278 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368969797]
[2022-01-10 00:36:40,278 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368969797] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 00:36:40,278 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204414736]
[2022-01-10 00:36:40,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 00:36:40,278 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 00:36:40,279 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 00:36:40,280 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)
[2022-01-10 00:36:40,281 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 00:36:40,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 00:36:40,462 INFO  L263         TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 00:36:40,469 INFO  L286         TraceCheckSpWp]: Computing forward predicates...