/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/Problem03_label20.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 04:20:45,076 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 04:20:45,078 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 04:20:45,135 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 04:20:45,136 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 04:20:45,151 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 04:20:45,154 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 04:20:45,159 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 04:20:45,161 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 04:20:45,161 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 04:20:45,162 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 04:20:45,163 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 04:20:45,163 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 04:20:45,164 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 04:20:45,165 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 04:20:45,166 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 04:20:45,166 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 04:20:45,172 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 04:20:45,176 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 04:20:45,177 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 04:20:45,183 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 04:20:45,184 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 04:20:45,184 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 04:20:45,185 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 04:20:45,185 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 04:20:45,185 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 04:20:45,186 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 04:20:45,186 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 04:20:45,187 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 04:20:45,187 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 04:20:45,187 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 04:20:45,188 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 04:20:45,188 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 04:20:45,189 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 04:20:45,193 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 04:20:45,213 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 04:20:45,213 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 04:20:45,213 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 04:20:45,213 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 04:20:45,214 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 04:20:45,214 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 04:20:45,215 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 04:20:45,215 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 04:20:45,215 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 04:20:45,216 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 04:20:45,216 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:20:45,217 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 04:20:45,217 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 04:20:45,218 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 04:20:45,218 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 04:20:45,406 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 04:20:45,423 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 04:20:45,424 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 04:20:45,425 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 04:20:45,426 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 04:20:45,427 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20.c
[2022-01-10 04:20:45,474 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3a7c153/5aee006978f540168155e80d36a0073d/FLAG8807f102a
[2022-01-10 04:20:45,883 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 04:20:45,883 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label20.c
[2022-01-10 04:20:45,894 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3a7c153/5aee006978f540168155e80d36a0073d/FLAG8807f102a
[2022-01-10 04:20:46,221 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3a7c153/5aee006978f540168155e80d36a0073d
[2022-01-10 04:20:46,223 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 04:20:46,225 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 04:20:46,227 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 04:20:46,228 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 04:20:46,230 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 04:20:46,231 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:20:46" (1/1) ...
[2022-01-10 04:20:46,232 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757bb099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:46, skipping insertion in model container
[2022-01-10 04:20:46,232 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:20:46" (1/1) ...
[2022-01-10 04:20:46,236 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 04:20:46,320 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 04:20:46,758 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/Problem03_label20.c[60555,60568]
[2022-01-10 04:20:46,798 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:20:46,810 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 04:20:47,003 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/Problem03_label20.c[60555,60568]
[2022-01-10 04:20:47,012 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:20:47,031 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 04:20:47,031 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47 WrapperNode
[2022-01-10 04:20:47,031 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 04:20:47,033 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 04:20:47,033 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 04:20:47,033 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 04:20:47,039 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,072 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,140 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769
[2022-01-10 04:20:47,140 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 04:20:47,141 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 04:20:47,141 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 04:20:47,141 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 04:20:47,147 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,147 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,164 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,164 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,198 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,208 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,217 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,226 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 04:20:47,227 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 04:20:47,227 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 04:20:47,227 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 04:20:47,228 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (1/1) ...
[2022-01-10 04:20:47,243 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:20:47,253 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 04:20:47,272 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 04:20:47,307 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 04:20:47,338 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 04:20:47,338 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 04:20:47,338 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 04:20:47,339 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 04:20:47,433 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 04:20:47,434 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 04:20:49,134 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 04:20:49,141 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 04:20:49,141 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 04:20:49,142 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:20:49 BoogieIcfgContainer
[2022-01-10 04:20:49,142 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 04:20:49,143 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 04:20:49,144 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 04:20:49,146 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 04:20:49,146 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:20:46" (1/3) ...
[2022-01-10 04:20:49,146 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374fca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:20:49, skipping insertion in model container
[2022-01-10 04:20:49,146 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:20:47" (2/3) ...
[2022-01-10 04:20:49,147 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374fca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:20:49, skipping insertion in model container
[2022-01-10 04:20:49,147 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:20:49" (3/3) ...
[2022-01-10 04:20:49,148 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem03_label20.c
[2022-01-10 04:20:49,151 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 04:20:49,151 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 04:20:49,185 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 04:20:49,189 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 04:20:49,189 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 04:20:49,210 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 04:20:49,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2022-01-10 04:20:49,221 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:20:49,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:49,222 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:20:49,225 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:20:49,225 INFO  L85        PathProgramCache]: Analyzing trace with hash -1628187933, now seen corresponding path program 1 times
[2022-01-10 04:20:49,239 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:20:49,240 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372508658]
[2022-01-10 04:20:49,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:20:49,240 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:20:49,241 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:20:49,242 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 04:20:49,244 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 04:20:49,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:20:49,361 INFO  L263         TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-01-10 04:20:49,371 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:21:05,271 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 04:21:05,272 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:21:05,272 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:21:05,273 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372508658]
[2022-01-10 04:21:05,273 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [372508658] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:21:05,273 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:21:05,273 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-10 04:21:05,275 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519668365]
[2022-01-10 04:21:05,275 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:21:05,279 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 04:21:05,279 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:21:05,302 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 04:21:05,303 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2022-01-10 04:21:05,307 INFO  L87              Difference]: Start difference. First operand  has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 10 states, 10 states have (on average 19.5) internal successors, (195), 9 states have internal predecessors, (195), 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 04:21:11,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:21:11,138 INFO  L93              Difference]: Finished difference Result 1133 states and 2085 transitions.
[2022-01-10 04:21:11,139 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 04:21:11,140 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 19.5) internal successors, (195), 9 states have internal predecessors, (195), 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 195
[2022-01-10 04:21:11,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:21:11,151 INFO  L225             Difference]: With dead ends: 1133
[2022-01-10 04:21:11,151 INFO  L226             Difference]: Without dead ends: 761
[2022-01-10 04:21:11,154 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240
[2022-01-10 04:21:11,156 INFO  L933         BasicCegarLoop]: 260 mSDtfsCounter, 1603 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2022-01-10 04:21:11,156 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 451 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2022-01-10 04:21:11,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 761 states.
[2022-01-10 04:21:11,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 758.
[2022-01-10 04:21:11,243 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 758 states, 757 states have (on average 1.272126816380449) internal successors, (963), 757 states have internal predecessors, (963), 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 04:21:11,245 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 963 transitions.
[2022-01-10 04:21:11,247 INFO  L78                 Accepts]: Start accepts. Automaton has 758 states and 963 transitions. Word has length 195
[2022-01-10 04:21:11,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:21:11,248 INFO  L470      AbstractCegarLoop]: Abstraction has 758 states and 963 transitions.
[2022-01-10 04:21:11,248 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 19.5) internal successors, (195), 9 states have internal predecessors, (195), 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 04:21:11,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 758 states and 963 transitions.
[2022-01-10 04:21:11,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2022-01-10 04:21:11,252 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:21:11,252 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-10 04:21:11,272 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 04:21:11,461 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 04:21:11,463 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:21:11,464 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:21:11,464 INFO  L85        PathProgramCache]: Analyzing trace with hash -1242935208, now seen corresponding path program 1 times
[2022-01-10 04:21:11,466 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:21:11,466 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616926921]
[2022-01-10 04:21:11,466 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:21:11,466 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:21:11,466 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:21:11,468 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 04:21:11,475 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 04:21:11,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:21:11,597 INFO  L263         TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 31 conjunts are in the unsatisfiable core
[2022-01-10 04:21:11,606 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:21:23,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:21:23,576 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:21:23,577 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:21:23,577 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616926921]
[2022-01-10 04:21:23,577 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616926921] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:21:23,578 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:21:23,578 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-01-10 04:21:23,578 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736443255]
[2022-01-10 04:21:23,581 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:21:23,584 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 04:21:23,585 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:21:23,585 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 04:21:23,586 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2022-01-10 04:21:23,587 INFO  L87              Difference]: Start difference. First operand 758 states and 963 transitions. Second operand  has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 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 04:21:26,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:21:26,553 INFO  L93              Difference]: Finished difference Result 1136 states and 1632 transitions.
[2022-01-10 04:21:26,553 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 04:21:26,554 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 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 202
[2022-01-10 04:21:26,554 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:21:26,557 INFO  L225             Difference]: With dead ends: 1136
[2022-01-10 04:21:26,557 INFO  L226             Difference]: Without dead ends: 899
[2022-01-10 04:21:26,558 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156
[2022-01-10 04:21:26,558 INFO  L933         BasicCegarLoop]: 181 mSDtfsCounter, 578 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2022-01-10 04:21:26,559 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 295 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2022-01-10 04:21:26,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 899 states.
[2022-01-10 04:21:26,576 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899.
[2022-01-10 04:21:26,577 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 899 states, 898 states have (on average 1.2360801781737194) internal successors, (1110), 898 states have internal predecessors, (1110), 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 04:21:26,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1110 transitions.
[2022-01-10 04:21:26,584 INFO  L78                 Accepts]: Start accepts. Automaton has 899 states and 1110 transitions. Word has length 202
[2022-01-10 04:21:26,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:21:26,585 INFO  L470      AbstractCegarLoop]: Abstraction has 899 states and 1110 transitions.
[2022-01-10 04:21:26,585 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 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 04:21:26,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 899 states and 1110 transitions.
[2022-01-10 04:21:26,589 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2022-01-10 04:21:26,589 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:21:26,589 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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]
[2022-01-10 04:21:26,597 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 04:21:26,789 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 04:21:26,790 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:21:26,790 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:21:26,790 INFO  L85        PathProgramCache]: Analyzing trace with hash -735783591, now seen corresponding path program 1 times
[2022-01-10 04:21:26,792 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:21:26,792 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136078929]
[2022-01-10 04:21:26,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:21:26,792 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:21:26,792 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:21:26,793 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 04:21:26,795 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 04:21:26,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:21:26,915 INFO  L263         TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 04:21:26,918 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:21:29,620 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 04:21:29,624 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:21:29,624 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:21:29,624 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136078929]
[2022-01-10 04:21:29,624 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136078929] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:21:29,626 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:21:29,626 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 04:21:29,627 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027014312]
[2022-01-10 04:21:29,627 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:21:29,627 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 04:21:29,629 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:21:29,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 04:21:29,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-10 04:21:29,630 INFO  L87              Difference]: Start difference. First operand 899 states and 1110 transitions. Second operand  has 5 states, 5 states have (on average 41.0) internal successors, (205), 4 states have internal predecessors, (205), 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 04:21:31,362 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:21:31,363 INFO  L93              Difference]: Finished difference Result 2134 states and 3006 transitions.
[2022-01-10 04:21:31,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 04:21:31,363 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 41.0) internal successors, (205), 4 states have internal predecessors, (205), 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 210
[2022-01-10 04:21:31,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:21:31,368 INFO  L225             Difference]: With dead ends: 2134
[2022-01-10 04:21:31,368 INFO  L226             Difference]: Without dead ends: 1584
[2022-01-10 04:21:31,369 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 04:21:31,370 INFO  L933         BasicCegarLoop]: 74 mSDtfsCounter, 1000 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2022-01-10 04:21:31,370 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 134 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2022-01-10 04:21:31,371 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1584 states.
[2022-01-10 04:21:31,390 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1582.
[2022-01-10 04:21:31,392 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1582 states, 1581 states have (on average 1.2125237191650853) internal successors, (1917), 1581 states have internal predecessors, (1917), 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 04:21:31,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1917 transitions.
[2022-01-10 04:21:31,395 INFO  L78                 Accepts]: Start accepts. Automaton has 1582 states and 1917 transitions. Word has length 210
[2022-01-10 04:21:31,396 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:21:31,396 INFO  L470      AbstractCegarLoop]: Abstraction has 1582 states and 1917 transitions.
[2022-01-10 04:21:31,396 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 41.0) internal successors, (205), 4 states have internal predecessors, (205), 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 04:21:31,396 INFO  L276                IsEmpty]: Start isEmpty. Operand 1582 states and 1917 transitions.
[2022-01-10 04:21:31,398 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2022-01-10 04:21:31,398 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:21:31,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:31,420 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 04:21:31,605 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 04:21:31,619 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:21:31,620 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:21:31,620 INFO  L85        PathProgramCache]: Analyzing trace with hash 1374711229, now seen corresponding path program 1 times
[2022-01-10 04:21:31,621 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:21:31,621 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748738641]
[2022-01-10 04:21:31,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:21:31,622 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:21:31,622 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:21:31,623 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 04:21:31,631 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 04:21:31,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:21:31,753 INFO  L263         TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 04:21:31,758 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:21:32,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:21:32,007 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:21:32,007 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:21:32,007 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748738641]
[2022-01-10 04:21:32,007 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748738641] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:21:32,007 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:21:32,007 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:21:32,007 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225217396]
[2022-01-10 04:21:32,007 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:21:32,008 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:21:32,008 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:21:32,009 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:21:32,009 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:21:32,009 INFO  L87              Difference]: Start difference. First operand 1582 states and 1917 transitions. Second operand  has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:21:32,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:21:32,990 INFO  L93              Difference]: Finished difference Result 2706 states and 3520 transitions.
[2022-01-10 04:21:32,990 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:21:32,991 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223
[2022-01-10 04:21:32,991 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:21:32,994 INFO  L225             Difference]: With dead ends: 2706
[2022-01-10 04:21:32,994 INFO  L226             Difference]: Without dead ends: 1380
[2022-01-10 04:21:32,996 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 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 04:21:33,002 INFO  L933         BasicCegarLoop]: 181 mSDtfsCounter, 187 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-01-10 04:21:33,003 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 213 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-01-10 04:21:33,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1380 states.
[2022-01-10 04:21:33,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1379.
[2022-01-10 04:21:33,017 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1379 states, 1378 states have (on average 1.2358490566037736) internal successors, (1703), 1378 states have internal predecessors, (1703), 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 04:21:33,019 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1703 transitions.
[2022-01-10 04:21:33,020 INFO  L78                 Accepts]: Start accepts. Automaton has 1379 states and 1703 transitions. Word has length 223
[2022-01-10 04:21:33,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:21:33,020 INFO  L470      AbstractCegarLoop]: Abstraction has 1379 states and 1703 transitions.
[2022-01-10 04:21:33,020 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:21:33,020 INFO  L276                IsEmpty]: Start isEmpty. Operand 1379 states and 1703 transitions.
[2022-01-10 04:21:33,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2022-01-10 04:21:33,022 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:21:33,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:33,029 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 04:21:33,229 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 04:21:33,230 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:21:33,231 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:21:33,231 INFO  L85        PathProgramCache]: Analyzing trace with hash 816427444, now seen corresponding path program 1 times
[2022-01-10 04:21:33,232 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:21:33,232 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991231625]
[2022-01-10 04:21:33,232 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:21:33,232 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:21:33,233 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:21:33,233 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 04:21:33,235 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 04:21:33,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:21:33,320 INFO  L263         TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 04:21:33,336 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:21:36,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:21:36,503 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:21:36,503 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:21:36,503 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991231625]
[2022-01-10 04:21:36,505 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [991231625] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:21:36,505 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:21:36,507 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 04:21:36,508 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803713824]
[2022-01-10 04:21:36,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:21:36,518 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 04:21:36,518 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:21:36,518 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 04:21:36,518 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 04:21:36,518 INFO  L87              Difference]: Start difference. First operand 1379 states and 1703 transitions. Second operand  has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 04:21:38,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:21:38,036 INFO  L93              Difference]: Finished difference Result 3934 states and 5017 transitions.
[2022-01-10 04:21:38,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 04:21:38,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 226
[2022-01-10 04:21:38,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:21:38,060 INFO  L225             Difference]: With dead ends: 3934
[2022-01-10 04:21:38,061 INFO  L226             Difference]: Without dead ends: 2442
[2022-01-10 04:21:38,063 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 223 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 04:21:38,063 INFO  L933         BasicCegarLoop]: 119 mSDtfsCounter, 261 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-01-10 04:21:38,063 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 163 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2022-01-10 04:21:38,065 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2442 states.
[2022-01-10 04:21:38,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2441.
[2022-01-10 04:21:38,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2441 states, 2440 states have (on average 1.1709016393442624) internal successors, (2857), 2440 states have internal predecessors, (2857), 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 04:21:38,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 2857 transitions.
[2022-01-10 04:21:38,093 INFO  L78                 Accepts]: Start accepts. Automaton has 2441 states and 2857 transitions. Word has length 226
[2022-01-10 04:21:38,093 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:21:38,093 INFO  L470      AbstractCegarLoop]: Abstraction has 2441 states and 2857 transitions.
[2022-01-10 04:21:38,093 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 04:21:38,093 INFO  L276                IsEmpty]: Start isEmpty. Operand 2441 states and 2857 transitions.
[2022-01-10 04:21:38,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 292
[2022-01-10 04:21:38,097 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:21:38,098 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, 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]
[2022-01-10 04:21:38,117 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 04:21:38,304 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 04:21:38,305 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:21:38,306 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:21:38,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -414127442, now seen corresponding path program 1 times
[2022-01-10 04:21:38,308 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:21:38,308 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316610829]
[2022-01-10 04:21:38,308 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:21:38,308 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:21:38,308 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:21:38,309 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 04:21:38,310 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 04:21:38,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:21:38,418 INFO  L263         TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 30 conjunts are in the unsatisfiable core
[2022-01-10 04:21:38,424 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:21:58,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:21:58,245 INFO  L328         TraceCheckSpWp]: Computing backward predicates...