/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_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 05:02:26,044 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 05:02:26,046 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 05:02:26,065 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 05:02:26,065 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 05:02:26,066 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2022-01-10 05:02:26,072 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 05:02:26,072 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 05:02:26,073 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 05:02:26,074 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 05:02:26,074 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 05:02:26,075 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 05:02:26,076 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 05:02:26,077 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 05:02:26,083 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 05:02:26,084 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 05:02:26,084 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 05:02:26,086 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 05:02:26,086 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 05:02:26,087 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 05:02:26,088 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 05:02:26,088 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 05:02:26,088 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 05:02:26,089 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 05:02:26,089 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 05:02:26,090 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 05:02:26,090 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 05:02:26,090 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 05:02:26,091 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 05:02:26,091 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 05:02:26,092 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 05:02:26,096 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 05:02:26,133 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 05:02:26,133 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 05:02:26,139 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 05:02:26,140 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 05:02:26,140 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 05:02:26,140 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 05:02:26,141 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 05:02:26,141 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 05:02:26,141 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 05:02:26,141 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 05:02:26,142 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 05:02:26,143 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 05:02:26,143 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 05:02:26,143 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 05:02:26,143 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 05:02:26,143 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 05:02:26,143 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 05:02:26,143 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:02:26,144 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 05:02:26,144 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 05:02:26,144 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 05:02:26,145 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 05:02:26,358 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 05:02:26,383 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 05:02:26,384 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 05:02:26,385 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 05:02:26,386 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 05:02:26,386 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50.c
[2022-01-10 05:02:26,438 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40041b645/75f2cff8030a4497a763181e903ea6f0/FLAGa090a193a
[2022-01-10 05:02:26,933 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 05:02:26,933 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label50.c
[2022-01-10 05:02:26,950 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40041b645/75f2cff8030a4497a763181e903ea6f0/FLAGa090a193a
[2022-01-10 05:02:27,470 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40041b645/75f2cff8030a4497a763181e903ea6f0
[2022-01-10 05:02:27,472 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 05:02:27,473 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 05:02:27,475 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 05:02:27,475 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 05:02:27,479 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 05:02:27,480 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:02:27" (1/1) ...
[2022-01-10 05:02:27,481 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3c1e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:27, skipping insertion in model container
[2022-01-10 05:02:27,481 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:02:27" (1/1) ...
[2022-01-10 05:02:27,486 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 05:02:27,527 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 05:02:27,718 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/Problem11_label50.c[5287,5300]
[2022-01-10 05:02:27,937 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:02:27,959 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 05:02:27,983 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/Problem11_label50.c[5287,5300]
[2022-01-10 05:02:28,078 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:02:28,089 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 05:02:28,089 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28 WrapperNode
[2022-01-10 05:02:28,089 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 05:02:28,090 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 05:02:28,090 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 05:02:28,090 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 05:02:28,095 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,121 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,181 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997
[2022-01-10 05:02:28,182 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 05:02:28,182 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 05:02:28,182 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 05:02:28,182 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 05:02:28,189 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,189 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,194 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,194 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,217 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,223 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,227 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,234 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 05:02:28,235 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 05:02:28,235 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 05:02:28,235 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 05:02:28,236 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (1/1) ...
[2022-01-10 05:02:28,258 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:02:28,265 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 05:02:28,275 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 05:02:28,293 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 05:02:28,302 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 05:02:28,302 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 05:02:28,302 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 05:02:28,302 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 05:02:28,352 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 05:02:28,353 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 05:02:34,249 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 05:02:34,255 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 05:02:34,255 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 05:02:34,256 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:02:34 BoogieIcfgContainer
[2022-01-10 05:02:34,257 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 05:02:34,258 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 05:02:34,258 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 05:02:34,261 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 05:02:34,261 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:02:27" (1/3) ...
[2022-01-10 05:02:34,273 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fcab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:02:34, skipping insertion in model container
[2022-01-10 05:02:34,273 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:28" (2/3) ...
[2022-01-10 05:02:34,273 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675fcab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:02:34, skipping insertion in model container
[2022-01-10 05:02:34,273 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:02:34" (3/3) ...
[2022-01-10 05:02:34,275 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem11_label50.c
[2022-01-10 05:02:34,278 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 05:02:34,279 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 05:02:34,332 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 05:02:34,336 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 05:02:34,337 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 05:02:34,348 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 05:02:34,352 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-10 05:02:34,352 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:02:34,353 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]
[2022-01-10 05:02:34,353 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:02:34,356 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:02:34,356 INFO  L85        PathProgramCache]: Analyzing trace with hash -1318097310, now seen corresponding path program 1 times
[2022-01-10 05:02:34,364 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:02:34,364 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208679017]
[2022-01-10 05:02:34,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:02:34,365 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:02:34,365 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:02:34,367 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:02:34,368 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 05:02:34,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:02:34,417 INFO  L263         TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:02:34,419 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:02:34,542 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 05:02:34,543 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:02:34,543 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:02:34,543 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208679017]
[2022-01-10 05:02:34,543 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [208679017] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:02:34,544 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:02:34,544 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:02:34,545 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789612152]
[2022-01-10 05:02:34,546 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:02:34,549 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:02:34,549 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:02:34,564 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:02:34,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:02:34,567 INFO  L87              Difference]: Start difference. First operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:02:41,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:02:41,635 INFO  L93              Difference]: Finished difference Result 758 states and 1342 transitions.
[2022-01-10 05:02:41,644 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:02:41,645 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-01-10 05:02:41,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:02:41,655 INFO  L225             Difference]: With dead ends: 758
[2022-01-10 05:02:41,656 INFO  L226             Difference]: Without dead ends: 410
[2022-01-10 05:02:41,659 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 05:02:41,665 INFO  L933         BasicCegarLoop]: 188 mSDtfsCounter, 189 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2022-01-10 05:02:41,666 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 220 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2022-01-10 05:02:41,681 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 410 states.
[2022-01-10 05:02:41,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410.
[2022-01-10 05:02:41,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 410 states, 409 states have (on average 1.4572127139364304) internal successors, (596), 409 states have internal predecessors, (596), 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 05:02:41,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 596 transitions.
[2022-01-10 05:02:41,729 INFO  L78                 Accepts]: Start accepts. Automaton has 410 states and 596 transitions. Word has length 36
[2022-01-10 05:02:41,729 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:02:41,730 INFO  L470      AbstractCegarLoop]: Abstraction has 410 states and 596 transitions.
[2022-01-10 05:02:41,730 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:02:41,730 INFO  L276                IsEmpty]: Start isEmpty. Operand 410 states and 596 transitions.
[2022-01-10 05:02:41,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2022-01-10 05:02:41,732 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:02:41,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:41,750 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-01-10 05:02:41,933 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:02:41,934 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:02:41,934 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:02:41,935 INFO  L85        PathProgramCache]: Analyzing trace with hash -464053414, now seen corresponding path program 1 times
[2022-01-10 05:02:41,936 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:02:41,936 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731104457]
[2022-01-10 05:02:41,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:02:41,937 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:02:41,937 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:02:41,938 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:02:41,951 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 05:02:42,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:02:42,042 INFO  L263         TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:02:42,046 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:02:42,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:02:42,291 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:02:42,291 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:02:42,292 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731104457]
[2022-01-10 05:02:42,292 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [731104457] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:02:42,292 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:02:42,292 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:02:42,292 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865241245]
[2022-01-10 05:02:42,292 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:02:42,293 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:02:42,293 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:02:42,293 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:02:42,294 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:02:42,294 INFO  L87              Difference]: Start difference. First operand 410 states and 596 transitions. Second operand  has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 05:02:50,623 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:02:50,623 INFO  L93              Difference]: Finished difference Result 1202 states and 1754 transitions.
[2022-01-10 05:02:50,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:02:50,630 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 104
[2022-01-10 05:02:50,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:02:50,633 INFO  L225             Difference]: With dead ends: 1202
[2022-01-10 05:02:50,633 INFO  L226             Difference]: Without dead ends: 794
[2022-01-10 05:02:50,634 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 05:02:50,635 INFO  L933         BasicCegarLoop]: 167 mSDtfsCounter, 133 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2022-01-10 05:02:50,635 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 186 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2022-01-10 05:02:50,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 794 states.
[2022-01-10 05:02:50,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 782.
[2022-01-10 05:02:50,653 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 782 states, 781 states have (on average 1.3482714468629962) internal successors, (1053), 781 states have internal predecessors, (1053), 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 05:02:50,654 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1053 transitions.
[2022-01-10 05:02:50,654 INFO  L78                 Accepts]: Start accepts. Automaton has 782 states and 1053 transitions. Word has length 104
[2022-01-10 05:02:50,655 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:02:50,655 INFO  L470      AbstractCegarLoop]: Abstraction has 782 states and 1053 transitions.
[2022-01-10 05:02:50,662 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 05:02:50,662 INFO  L276                IsEmpty]: Start isEmpty. Operand 782 states and 1053 transitions.
[2022-01-10 05:02:50,664 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2022-01-10 05:02:50,664 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:02:50,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:50,676 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-01-10 05:02:50,871 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:02:50,872 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:02:50,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:02:50,872 INFO  L85        PathProgramCache]: Analyzing trace with hash 1917234118, now seen corresponding path program 1 times
[2022-01-10 05:02:50,873 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:02:50,873 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520604058]
[2022-01-10 05:02:50,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:02:50,874 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:02:50,874 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:02:50,875 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:02:50,882 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 05:02:50,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:02:50,946 INFO  L263         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:02:50,952 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:02:51,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:02:51,167 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:02:51,167 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:02:51,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520604058]
[2022-01-10 05:02:51,168 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [520604058] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:02:51,168 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:02:51,168 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:02:51,168 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216673278]
[2022-01-10 05:02:51,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:02:51,168 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:02:51,168 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:02:51,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:02:51,169 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:02:51,169 INFO  L87              Difference]: Start difference. First operand 782 states and 1053 transitions. Second operand  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 05:02:57,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:02:57,487 INFO  L93              Difference]: Finished difference Result 1931 states and 2546 transitions.
[2022-01-10 05:02:57,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:02:57,505 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 112
[2022-01-10 05:02:57,505 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:02:57,509 INFO  L225             Difference]: With dead ends: 1931
[2022-01-10 05:02:57,509 INFO  L226             Difference]: Without dead ends: 1151
[2022-01-10 05:02:57,510 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 05:02:57,511 INFO  L933         BasicCegarLoop]: 168 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2022-01-10 05:02:57,511 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 194 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2022-01-10 05:02:57,512 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1151 states.
[2022-01-10 05:02:57,524 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1150.
[2022-01-10 05:02:57,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1150 states, 1149 states have (on average 1.257615317667537) internal successors, (1445), 1149 states have internal predecessors, (1445), 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 05:02:57,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1445 transitions.
[2022-01-10 05:02:57,528 INFO  L78                 Accepts]: Start accepts. Automaton has 1150 states and 1445 transitions. Word has length 112
[2022-01-10 05:02:57,528 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:02:57,528 INFO  L470      AbstractCegarLoop]: Abstraction has 1150 states and 1445 transitions.
[2022-01-10 05:02:57,529 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 05:02:57,529 INFO  L276                IsEmpty]: Start isEmpty. Operand 1150 states and 1445 transitions.
[2022-01-10 05:02:57,537 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2022-01-10 05:02:57,537 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:02:57,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:57,547 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0
[2022-01-10 05:02:57,745 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:02:57,745 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:02:57,746 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:02:57,746 INFO  L85        PathProgramCache]: Analyzing trace with hash -1754552329, now seen corresponding path program 1 times
[2022-01-10 05:02:57,747 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:02:57,748 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994881706]
[2022-01-10 05:02:57,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:02:57,748 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:02:57,748 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:02:57,759 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:02:57,760 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 05:02:57,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:02:57,825 INFO  L263         TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:02:57,830 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:02:58,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:02:58,092 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:02:58,093 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:02:58,093 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994881706]
[2022-01-10 05:02:58,094 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994881706] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:02:58,095 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:02:58,095 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 05:02:58,095 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402592552]
[2022-01-10 05:02:58,095 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:02:58,096 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:02:58,096 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:02:58,097 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:02:58,097 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:02:58,097 INFO  L87              Difference]: Start difference. First operand 1150 states and 1445 transitions. Second operand  has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 05:03:05,135 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:03:05,135 INFO  L93              Difference]: Finished difference Result 2314 states and 3057 transitions.
[2022-01-10 05:03:05,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:03:05,141 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163
[2022-01-10 05:03:05,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:03:05,149 INFO  L225             Difference]: With dead ends: 2314
[2022-01-10 05:03:05,149 INFO  L226             Difference]: Without dead ends: 1534
[2022-01-10 05:03:05,151 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 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 05:03:05,151 INFO  L933         BasicCegarLoop]: 316 mSDtfsCounter, 169 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2022-01-10 05:03:05,152 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2022-01-10 05:03:05,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1534 states.
[2022-01-10 05:03:05,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1526.
[2022-01-10 05:03:05,172 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1526 states, 1525 states have (on average 1.2452459016393442) internal successors, (1899), 1525 states have internal predecessors, (1899), 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 05:03:05,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1899 transitions.
[2022-01-10 05:03:05,175 INFO  L78                 Accepts]: Start accepts. Automaton has 1526 states and 1899 transitions. Word has length 163
[2022-01-10 05:03:05,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:03:05,175 INFO  L470      AbstractCegarLoop]: Abstraction has 1526 states and 1899 transitions.
[2022-01-10 05:03:05,175 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 05:03:05,175 INFO  L276                IsEmpty]: Start isEmpty. Operand 1526 states and 1899 transitions.
[2022-01-10 05:03:05,177 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2022-01-10 05:03:05,177 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:03:05,177 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, 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]
[2022-01-10 05:03:05,184 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 05:03:05,384 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:03:05,384 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:03:05,385 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:03:05,385 INFO  L85        PathProgramCache]: Analyzing trace with hash 1223784736, now seen corresponding path program 1 times
[2022-01-10 05:03:05,386 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:03:05,386 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660383137]
[2022-01-10 05:03:05,386 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:03:05,386 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:03:05,386 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:03:05,387 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:03:05,388 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 05:03:05,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:03:05,533 INFO  L263         TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 05:03:05,536 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:03:06,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:03:06,767 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 05:03:09,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:03:09,050 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:03:09,051 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660383137]
[2022-01-10 05:03:09,053 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660383137] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 05:03:09,055 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 05:03:09,055 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2022-01-10 05:03:09,060 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645081206]
[2022-01-10 05:03:09,060 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:03:09,061 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:03:09,061 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:03:09,061 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:03:09,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 05:03:09,062 INFO  L87              Difference]: Start difference. First operand 1526 states and 1899 transitions. Second operand  has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 05:03:21,438 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 05:03:33,835 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:03:33,835 INFO  L93              Difference]: Finished difference Result 2493 states and 3286 transitions.
[2022-01-10 05:03:33,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:03:33,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217
[2022-01-10 05:03:33,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:03:33,847 INFO  L225             Difference]: With dead ends: 2493
[2022-01-10 05:03:33,848 INFO  L226             Difference]: Without dead ends: 1895
[2022-01-10 05:03:33,848 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 429 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 05:03:33,849 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time
[2022-01-10 05:03:33,849 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time]
[2022-01-10 05:03:33,851 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1895 states.
[2022-01-10 05:03:33,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1895.
[2022-01-10 05:03:33,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1895 states, 1894 states have (on average 1.270855332629356) internal successors, (2407), 1894 states have internal predecessors, (2407), 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 05:03:33,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2407 transitions.
[2022-01-10 05:03:33,873 INFO  L78                 Accepts]: Start accepts. Automaton has 1895 states and 2407 transitions. Word has length 217
[2022-01-10 05:03:33,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:03:33,873 INFO  L470      AbstractCegarLoop]: Abstraction has 1895 states and 2407 transitions.
[2022-01-10 05:03:33,873 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 05:03:33,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 1895 states and 2407 transitions.
[2022-01-10 05:03:33,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2022-01-10 05:03:33,875 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:03:33,875 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, 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]
[2022-01-10 05:03:33,917 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2022-01-10 05:03:34,082 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:03:34,083 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:03:34,083 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:03:34,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 1136364984, now seen corresponding path program 1 times
[2022-01-10 05:03:34,085 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:03:34,085 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385108729]
[2022-01-10 05:03:34,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:03:34,085 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:03:34,086 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:03:34,100 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:03:34,158 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2022-01-10 05:03:34,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:03:34,301 INFO  L263         TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 05:03:34,305 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:03:36,852 INFO  L134       CoverageAnalysis]: Checked inductivity of 146 backedges. 46 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:03:36,852 INFO  L328         TraceCheckSpWp]: Computing backward predicates...