/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 23:49:10,798 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 23:49:10,802 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 23:49:10,848 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 23:49:10,849 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 23:49:10,858 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 23:49:10,860 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 23:49:10,885 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 23:49:10,886 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 23:49:10,888 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 23:49:10,889 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 23:49:10,894 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 23:49:10,896 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 23:49:10,900 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 23:49:10,901 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 23:49:10,902 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 23:49:10,918 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 23:49:10,918 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 23:49:10,918 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 23:49:10,920 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 23:49:10,923 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-09-24 23:49:10,925 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-24 23:49:10,930 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 23:49:10,931 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 23:49:10,931 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 23:49:10,935 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 23:49:10,937 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 23:49:10,938 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 23:49:10,983 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 23:49:10,983 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 23:49:10,985 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 23:49:10,985 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 23:49:10,985 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 23:49:10,986 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 23:49:10,986 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 23:49:10,986 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 23:49:10,986 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 23:49:10,987 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 23:49:10,988 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 23:49:10,988 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 23:49:10,988 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 23:49:10,989 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 23:49:10,989 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 23:49:10,989 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 23:49:10,989 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 23:49:10,989 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 23:49:10,990 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 23:49:10,990 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 23:49:10,990 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 23:49:10,991 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 23:49:10,991 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 23:49:10,991 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 23:49:10,991 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 23:49:10,991 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 23:49:10,992 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 23:49:10,992 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 23:49:10,992 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 23:49:10,992 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;
[2020-09-24 23:49:11,531 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 23:49:11,557 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 23:49:11,562 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 23:49:11,564 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 23:49:11,565 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 23:49:11,566 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c
[2020-09-24 23:49:11,662 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3729575/74b856ccc3df4338abbb72117524390f/FLAG973d6eca3
[2020-09-24 23:49:12,186 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 23:49:12,187 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-1.c
[2020-09-24 23:49:12,195 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3729575/74b856ccc3df4338abbb72117524390f/FLAG973d6eca3
[2020-09-24 23:49:12,529 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3729575/74b856ccc3df4338abbb72117524390f
[2020-09-24 23:49:12,543 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 23:49:12,551 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 23:49:12,555 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 23:49:12,556 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 23:49:12,560 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 23:49:12,561 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,566 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12, skipping insertion in model container
[2020-09-24 23:49:12,567 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,577 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 23:49:12,605 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 23:49:12,817 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:49:12,823 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 23:49:12,842 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:49:12,856 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 23:49:12,857 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12 WrapperNode
[2020-09-24 23:49:12,857 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 23:49:12,858 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 23:49:12,858 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 23:49:12,858 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 23:49:12,874 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,874 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,881 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,881 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,886 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,888 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,890 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
[2020-09-24 23:49:12,891 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 23:49:12,892 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 23:49:12,892 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 23:49:12,892 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 23:49:12,894 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 23:49:13,046 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 23:49:13,046 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 23:49:13,047 INFO  L138     BoogieDeclarations]: Found implementation of procedure sum
[2020-09-24 23:49:13,047 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 23:49:13,047 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 23:49:13,047 INFO  L130     BoogieDeclarations]: Found specification of procedure sum
[2020-09-24 23:49:13,047 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 23:49:13,047 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 23:49:13,048 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 23:49:13,249 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 23:49:13,250 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 23:49:13,255 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:13 BoogieIcfgContainer
[2020-09-24 23:49:13,255 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 23:49:13,256 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 23:49:13,256 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 23:49:13,260 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 23:49:13,261 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:49:12" (1/3) ...
[2020-09-24 23:49:13,262 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73234926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:13, skipping insertion in model container
[2020-09-24 23:49:13,262 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:12" (2/3) ...
[2020-09-24 23:49:13,263 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73234926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:13, skipping insertion in model container
[2020-09-24 23:49:13,263 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:13" (3/3) ...
[2020-09-24 23:49:13,265 INFO  L109   eAbstractionObserver]: Analyzing ICFG sum_20x0-1.c
[2020-09-24 23:49:13,277 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 23:49:13,293 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 23:49:13,340 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 23:49:13,391 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 23:49:13,391 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 23:49:13,391 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 23:49:13,392 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 23:49:13,392 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 23:49:13,392 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 23:49:13,392 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 23:49:13,393 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 23:49:13,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states.
[2020-09-24 23:49:13,427 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-24 23:49:13,427 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:13,428 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:13,429 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:13,437 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:13,437 INFO  L82        PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times
[2020-09-24 23:49:13,450 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:13,450 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779835774]
[2020-09-24 23:49:13,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:13,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:13,602 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:13,711 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:13,798 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:13,799 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 23:49:13,799 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:13,799 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 215
[2020-09-24 23:49:13,802 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:13,803 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 23:49:13,803 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:13,803 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 23:49:13,803 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 23:49:13,856 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:13,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:13,860 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:13,862 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:13,862 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:13,863 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:13,863 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 23:49:13,863 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:13,864 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:13,864 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:13,864 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:13,864 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:13,869 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:13,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:13,879 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:13,908 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:13,908 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:13,909 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:13,909 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-09-24 23:49:13,909 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:13,910 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 23:49:13,910 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:13,910 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 23:49:13,910 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:13,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 23:49:13,958 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779835774]
[2020-09-24 23:49:13,961 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 23:49:13,961 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 23:49:13,962 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451977678]
[2020-09-24 23:49:13,969 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 23:49:13,969 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:13,985 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 23:49:13,986 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 23:49:13,989 INFO  L87              Difference]: Start difference. First operand 27 states. Second operand 5 states.
[2020-09-24 23:49:14,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:14,093 INFO  L93              Difference]: Finished difference Result 39 states and 42 transitions.
[2020-09-24 23:49:14,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 23:49:14,095 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-09-24 23:49:14,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:14,109 INFO  L225             Difference]: With dead ends: 39
[2020-09-24 23:49:14,110 INFO  L226             Difference]: Without dead ends: 25
[2020-09-24 23:49:14,114 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 23:49:14,136 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2020-09-24 23:49:14,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2020-09-24 23:49:14,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2020-09-24 23:49:14,171 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2020-09-24 23:49:14,173 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18
[2020-09-24 23:49:14,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:14,174 INFO  L479      AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2020-09-24 23:49:14,174 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 23:49:14,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2020-09-24 23:49:14,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-09-24 23:49:14,176 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:14,177 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:14,177 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 23:49:14,177 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:14,178 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:14,178 INFO  L82        PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times
[2020-09-24 23:49:14,178 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:14,179 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141042849]
[2020-09-24 23:49:14,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:14,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:14,203 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:14,305 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:14,643 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:14,643 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-24 23:49:14,644 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:14,644 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 449
[2020-09-24 23:49:14,644 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:14,644 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 23:49:14,645 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:14,645 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-24 23:49:14,645 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:14,694 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:14,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:14,697 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:14,698 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:14,699 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:14,699 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:14,699 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:14,700 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:14,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:14,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:14,701 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:14,701 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:14,702 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:14,709 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:14,715 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:14,758 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:14,905 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:14,907 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:14,907 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:14,907 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 194
[2020-09-24 23:49:14,907 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:14,907 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:14,908 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:14,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:14,909 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:14,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:14,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:14,964 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:14,988 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:14,988 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:14,989 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:14,989 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-09-24 23:49:14,989 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:14,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:14,990 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:14,990 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:14,990 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:15,027 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-09-24 23:49:15,027 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141042849]
[2020-09-24 23:49:15,028 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:15,028 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 23:49:15,028 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95144975]
[2020-09-24 23:49:15,030 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 23:49:15,031 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:15,031 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 23:49:15,032 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2020-09-24 23:49:15,032 INFO  L87              Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states.
[2020-09-24 23:49:15,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:15,201 INFO  L93              Difference]: Finished difference Result 36 states and 37 transitions.
[2020-09-24 23:49:15,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 23:49:15,202 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 27
[2020-09-24 23:49:15,202 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:15,203 INFO  L225             Difference]: With dead ends: 36
[2020-09-24 23:49:15,203 INFO  L226             Difference]: Without dead ends: 30
[2020-09-24 23:49:15,205 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2020-09-24 23:49:15,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-09-24 23:49:15,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2020-09-24 23:49:15,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-09-24 23:49:15,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2020-09-24 23:49:15,213 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27
[2020-09-24 23:49:15,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:15,213 INFO  L479      AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2020-09-24 23:49:15,213 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 23:49:15,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2020-09-24 23:49:15,215 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-09-24 23:49:15,215 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:15,215 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:15,215 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 23:49:15,216 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:15,216 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:15,216 INFO  L82        PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times
[2020-09-24 23:49:15,216 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:15,217 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161316821]
[2020-09-24 23:49:15,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:15,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,232 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,322 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,797 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:15,797 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-24 23:49:15,797 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:15,798 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 570
[2020-09-24 23:49:15,798 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:15,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 23:49:15,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:15,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:15,799 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:15,820 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:15,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,821 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,823 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:15,824 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:15,824 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:15,824 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:15,824 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:15,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:15,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:15,825 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:15,825 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:15,826 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:15,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,840 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,923 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:15,924 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:15,924 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:15,924 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 88
[2020-09-24 23:49:15,925 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:15,925 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 23:49:15,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:15,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-09-24 23:49:15,926 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:15,949 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:15,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,041 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:16,042 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:16,043 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:16,043 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 82
[2020-09-24 23:49:16,044 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:16,044 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:16,045 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:16,045 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:16,045 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:16,074 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:16,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:16,084 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,097 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:16,098 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:16,099 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:16,102 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 23:49:16,103 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:16,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:16,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:16,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:16,104 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:16,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-09-24 23:49:16,128 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161316821]
[2020-09-24 23:49:16,128 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:16,128 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 23:49:16,129 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306843849]
[2020-09-24 23:49:16,129 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 23:49:16,131 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:16,132 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 23:49:16,133 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 23:49:16,139 INFO  L87              Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states.
[2020-09-24 23:49:16,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:16,233 INFO  L93              Difference]: Finished difference Result 41 states and 42 transitions.
[2020-09-24 23:49:16,234 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 23:49:16,234 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 36
[2020-09-24 23:49:16,235 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:16,236 INFO  L225             Difference]: With dead ends: 41
[2020-09-24 23:49:16,236 INFO  L226             Difference]: Without dead ends: 35
[2020-09-24 23:49:16,238 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-09-24 23:49:16,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-09-24 23:49:16,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-09-24 23:49:16,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-09-24 23:49:16,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions.
[2020-09-24 23:49:16,251 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36
[2020-09-24 23:49:16,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:16,254 INFO  L479      AbstractCegarLoop]: Abstraction has 35 states and 36 transitions.
[2020-09-24 23:49:16,254 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 23:49:16,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions.
[2020-09-24 23:49:16,255 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 23:49:16,257 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:16,257 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:16,257 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 23:49:16,258 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:16,258 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:16,258 INFO  L82        PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times
[2020-09-24 23:49:16,258 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:16,259 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933611921]
[2020-09-24 23:49:16,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:16,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:16,284 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,428 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,139 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,139 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-24 23:49:17,139 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:17,139 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 863
[2020-09-24 23:49:17,140 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,140 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-24 23:49:17,140 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:17,140 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-24 23:49:17,141 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:17,162 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:17,162 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,164 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,165 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,165 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:17,165 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,166 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:17,166 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:17,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,167 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:17,167 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:17,168 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:17,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,182 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,334 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,335 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:17,335 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,336 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 158
[2020-09-24 23:49:17,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,336 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-24 23:49:17,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:17,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-09-24 23:49:17,337 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,369 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:17,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,387 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,511 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,511 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:17,511 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,512 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 129
[2020-09-24 23:49:17,516 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,516 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:17,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:17,517 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:17,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,563 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,612 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,612 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:17,613 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,613 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 52
[2020-09-24 23:49:17,613 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,614 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:17,614 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:17,615 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,662 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:17,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,666 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,680 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,680 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:17,681 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,681 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-24 23:49:17,682 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:17,683 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,683 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:17,683 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2020-09-24 23:49:17,714 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933611921]
[2020-09-24 23:49:17,715 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:17,715 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-24 23:49:17,715 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608400593]
[2020-09-24 23:49:17,716 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 23:49:17,716 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:17,716 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 23:49:17,717 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2020-09-24 23:49:17,717 INFO  L87              Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states.
[2020-09-24 23:49:17,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:17,826 INFO  L93              Difference]: Finished difference Result 46 states and 47 transitions.
[2020-09-24 23:49:17,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 23:49:17,827 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 45
[2020-09-24 23:49:17,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:17,828 INFO  L225             Difference]: With dead ends: 46
[2020-09-24 23:49:17,828 INFO  L226             Difference]: Without dead ends: 40
[2020-09-24 23:49:17,829 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2020-09-24 23:49:17,830 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-09-24 23:49:17,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2020-09-24 23:49:17,836 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2020-09-24 23:49:17,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions.
[2020-09-24 23:49:17,837 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45
[2020-09-24 23:49:17,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:17,837 INFO  L479      AbstractCegarLoop]: Abstraction has 40 states and 41 transitions.
[2020-09-24 23:49:17,838 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 23:49:17,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions.
[2020-09-24 23:49:17,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-09-24 23:49:17,840 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:17,840 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:17,840 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 23:49:17,840 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:17,840 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:17,841 INFO  L82        PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times
[2020-09-24 23:49:17,841 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:17,841 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202227599]
[2020-09-24 23:49:17,841 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:17,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,862 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:18,007 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,711 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:19,712 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 71
[2020-09-24 23:49:19,712 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:19,712 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1858
[2020-09-24 23:49:19,713 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:19,713 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 23:49:19,713 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:19,713 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-09-24 23:49:19,713 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:19,728 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:19,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:19,730 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,731 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:19,731 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:19,732 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:19,732 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:19,732 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:19,732 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:19,732 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:19,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:19,733 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:19,734 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:19,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:19,751 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,951 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:19,951 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:19,952 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:19,952 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 208
[2020-09-24 23:49:19,952 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:19,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 23:49:19,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:19,953 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 52
[2020-09-24 23:49:19,953 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:19,983 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:19,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:20,001 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:20,174 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:20,175 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:20,175 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:20,175 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 180
[2020-09-24 23:49:20,176 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:20,176 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:20,176 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:20,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:20,177 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:20,209 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:20,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:20,223 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:20,328 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:20,328 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:20,328 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:20,329 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 110
[2020-09-24 23:49:20,329 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:20,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:20,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:20,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:20,330 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:20,353 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:20,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:20,363 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:20,403 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:20,403 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:20,404 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:20,404 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-09-24 23:49:20,404 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:20,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:20,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:20,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:20,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:20,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:20,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:20,453 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:20,465 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:20,466 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:20,466 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:20,466 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 23:49:20,467 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:20,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:20,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:20,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:20,468 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:20,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2020-09-24 23:49:20,501 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202227599]
[2020-09-24 23:49:20,501 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:20,502 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-24 23:49:20,502 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190054359]
[2020-09-24 23:49:20,503 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 23:49:20,503 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:20,503 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 23:49:20,503 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2020-09-24 23:49:20,504 INFO  L87              Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states.
[2020-09-24 23:49:20,622 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:20,622 INFO  L93              Difference]: Finished difference Result 51 states and 52 transitions.
[2020-09-24 23:49:20,623 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-09-24 23:49:20,623 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 54
[2020-09-24 23:49:20,624 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:20,624 INFO  L225             Difference]: With dead ends: 51
[2020-09-24 23:49:20,627 INFO  L226             Difference]: Without dead ends: 45
[2020-09-24 23:49:20,628 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182
[2020-09-24 23:49:20,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2020-09-24 23:49:20,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2020-09-24 23:49:20,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-09-24 23:49:20,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2020-09-24 23:49:20,641 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54
[2020-09-24 23:49:20,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:20,642 INFO  L479      AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2020-09-24 23:49:20,642 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 23:49:20,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2020-09-24 23:49:20,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-09-24 23:49:20,646 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:20,647 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:20,647 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 23:49:20,647 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:20,647 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:20,648 INFO  L82        PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times
[2020-09-24 23:49:20,648 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:20,649 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599884826]
[2020-09-24 23:49:20,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:20,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:20,678 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:20,829 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:24,452 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:24,453 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 23:49:24,453 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:24,453 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3784
[2020-09-24 23:49:24,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:24,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-24 23:49:24,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:24,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-09-24 23:49:24,454 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:24,472 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:24,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:24,474 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:24,475 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:24,476 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:24,476 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:24,476 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:24,476 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:24,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:24,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:24,477 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:24,477 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:24,483 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:24,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:24,502 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:24,760 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:24,761 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:24,761 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:24,761 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 267
[2020-09-24 23:49:24,762 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:24,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-24 23:49:24,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:24,763 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-09-24 23:49:24,763 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:24,802 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:24,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:24,823 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:25,064 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:25,064 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:25,065 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:25,065 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 250
[2020-09-24 23:49:25,065 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:25,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 23:49:25,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:25,067 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:25,067 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:25,104 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:25,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:25,120 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:25,260 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:25,261 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:25,261 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:25,261 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 148
[2020-09-24 23:49:25,262 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:25,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:25,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:25,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:25,262 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:25,284 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:25,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:25,294 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:25,359 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:25,359 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:25,359 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:25,360 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-09-24 23:49:25,360 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:25,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:25,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:25,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:25,361 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:25,380 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:25,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:25,388 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:25,428 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:25,428 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:25,429 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:25,429 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-09-24 23:49:25,429 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:25,429 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:25,430 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:25,430 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:25,430 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:25,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:25,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:25,454 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:25,467 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:25,467 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:25,468 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:25,468 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 23:49:25,468 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:25,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:25,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:25,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:25,469 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:25,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2020-09-24 23:49:25,511 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599884826]
[2020-09-24 23:49:25,512 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:25,512 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-24 23:49:25,513 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598527071]
[2020-09-24 23:49:25,513 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 23:49:25,514 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:25,514 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 23:49:25,514 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2020-09-24 23:49:25,514 INFO  L87              Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states.
[2020-09-24 23:49:25,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:25,652 INFO  L93              Difference]: Finished difference Result 56 states and 57 transitions.
[2020-09-24 23:49:25,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 23:49:25,652 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 63
[2020-09-24 23:49:25,653 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:25,654 INFO  L225             Difference]: With dead ends: 56
[2020-09-24 23:49:25,654 INFO  L226             Difference]: Without dead ends: 50
[2020-09-24 23:49:25,655 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272
[2020-09-24 23:49:25,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-09-24 23:49:25,665 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2020-09-24 23:49:25,666 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-09-24 23:49:25,666 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions.
[2020-09-24 23:49:25,668 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63
[2020-09-24 23:49:25,669 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:25,669 INFO  L479      AbstractCegarLoop]: Abstraction has 50 states and 51 transitions.
[2020-09-24 23:49:25,669 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 23:49:25,669 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions.
[2020-09-24 23:49:25,674 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2020-09-24 23:49:25,674 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:25,674 INFO  L422         BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:25,674 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 23:49:25,677 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:25,677 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:25,678 INFO  L82        PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times
[2020-09-24 23:49:25,678 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:25,678 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443214235]
[2020-09-24 23:49:25,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:25,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:25,704 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:25,940 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:29,625 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:29,625 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 93
[2020-09-24 23:49:29,625 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:29,625 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3931
[2020-09-24 23:49:29,626 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:29,626 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-09-24 23:49:29,626 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:29,626 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 81
[2020-09-24 23:49:29,627 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:29,663 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:29,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:29,665 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:29,666 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:29,667 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:29,667 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:29,667 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:29,667 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:29,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:29,668 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:29,668 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:29,668 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:29,669 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:29,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:29,697 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:29,889 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:32,508 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:32,509 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:49:32,509 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:32,510 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2823
[2020-09-24 23:49:32,510 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:32,510 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 31
[2020-09-24 23:49:32,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:32,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:49:32,511 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:32,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:32,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:32,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:33,059 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:33,060 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:33,060 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:33,060 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 484
[2020-09-24 23:49:33,060 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:33,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-09-24 23:49:33,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:33,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:49:33,061 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:33,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:33,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:33,115 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:33,464 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:33,464 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:33,464 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:33,465 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 356
[2020-09-24 23:49:33,465 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:33,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-09-24 23:49:33,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:33,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:33,466 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:33,529 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:33,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:33,542 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:33,760 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:33,760 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:33,761 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:33,761 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 224
[2020-09-24 23:49:33,761 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:33,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 23:49:33,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:33,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:33,762 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:33,802 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:33,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:33,814 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:33,956 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:33,957 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:33,957 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:33,957 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 148
[2020-09-24 23:49:33,958 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:33,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:49:33,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:33,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:33,959 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:34,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:34,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:34,017 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:34,088 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:34,089 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:34,089 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:34,089 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 74
[2020-09-24 23:49:34,090 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:34,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:34,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:34,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:34,091 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:34,137 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:34,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:34,142 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:34,152 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:34,153 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:34,153 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:34,153 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 23:49:34,154 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:34,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:34,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:34,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:34,155 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:34,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 165 backedges. 6 proven. 101 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2020-09-24 23:49:34,224 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443214235]
[2020-09-24 23:49:34,224 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:34,224 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2020-09-24 23:49:34,224 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839651100]
[2020-09-24 23:49:34,225 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-09-24 23:49:34,225 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:34,226 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-09-24 23:49:34,226 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420
[2020-09-24 23:49:34,226 INFO  L87              Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states.
[2020-09-24 23:49:34,655 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:34,655 INFO  L93              Difference]: Finished difference Result 61 states and 62 transitions.
[2020-09-24 23:49:34,655 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-09-24 23:49:34,656 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 72
[2020-09-24 23:49:34,656 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:34,657 INFO  L225             Difference]: With dead ends: 61
[2020-09-24 23:49:34,657 INFO  L226             Difference]: Without dead ends: 55
[2020-09-24 23:49:34,659 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892
[2020-09-24 23:49:34,659 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-09-24 23:49:34,664 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2020-09-24 23:49:34,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-09-24 23:49:34,666 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions.
[2020-09-24 23:49:34,666 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72
[2020-09-24 23:49:34,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:34,666 INFO  L479      AbstractCegarLoop]: Abstraction has 55 states and 56 transitions.
[2020-09-24 23:49:34,666 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-09-24 23:49:34,667 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions.
[2020-09-24 23:49:34,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2020-09-24 23:49:34,668 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:34,668 INFO  L422         BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:34,668 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 23:49:34,668 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:34,669 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:34,669 INFO  L82        PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times
[2020-09-24 23:49:34,669 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:34,669 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204001944]
[2020-09-24 23:49:34,670 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:34,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:34,690 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:34,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:39,266 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:39,266 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 104
[2020-09-24 23:49:39,266 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:39,266 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4585
[2020-09-24 23:49:39,267 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:39,267 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-09-24 23:49:39,267 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:39,267 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-09-24 23:49:39,267 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:39,280 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:39,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:39,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:39,283 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:39,283 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:39,283 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:39,284 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:39,284 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:39,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:39,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:39,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:39,284 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:39,285 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:39,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:39,308 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:39,691 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:39,691 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 23:49:39,691 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:39,691 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 394
[2020-09-24 23:49:39,691 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:39,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-09-24 23:49:39,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:39,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 85
[2020-09-24 23:49:39,692 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:39,745 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:39,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:39,767 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,073 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,073 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 317
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:49:40,074 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:40,105 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:40,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:40,123 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,348 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,348 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:40,348 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,349 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 233
[2020-09-24 23:49:40,349 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:49:40,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:49:40,349 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:40,381 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:40,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:40,398 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,564 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,564 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:40,565 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,565 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 174
[2020-09-24 23:49:40,565 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 23:49:40,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,565 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:40,566 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:40,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:40,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:40,603 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,706 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,707 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:40,707 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,707 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-09-24 23:49:40,707 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,707 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:40,708 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,708 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:40,708 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:40,743 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:40,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:40,752 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,827 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,828 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:40,828 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,828 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 79
[2020-09-24 23:49:40,828 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:40,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:40,829 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:40,848 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:40,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:40,854 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,886 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,887 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:40,887 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,887 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-09-24 23:49:40,887 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:40,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:40,888 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:40,906 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:40,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:40,910 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:40,922 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:40,923 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:40,923 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:40,923 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 23:49:40,923 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:40,924 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:40,924 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:40,924 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:40,924 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:40,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 149 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2020-09-24 23:49:40,993 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204001944]
[2020-09-24 23:49:40,993 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:40,993 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-24 23:49:40,994 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855369374]
[2020-09-24 23:49:40,994 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-24 23:49:40,995 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:40,995 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-24 23:49:40,995 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2020-09-24 23:49:40,996 INFO  L87              Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states.
[2020-09-24 23:49:41,162 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:41,163 INFO  L93              Difference]: Finished difference Result 66 states and 67 transitions.
[2020-09-24 23:49:41,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 23:49:41,163 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 81
[2020-09-24 23:49:41,164 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:41,166 INFO  L225             Difference]: With dead ends: 66
[2020-09-24 23:49:41,166 INFO  L226             Difference]: Without dead ends: 60
[2020-09-24 23:49:41,167 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462
[2020-09-24 23:49:41,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-09-24 23:49:41,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2020-09-24 23:49:41,172 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-09-24 23:49:41,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions.
[2020-09-24 23:49:41,174 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81
[2020-09-24 23:49:41,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:41,174 INFO  L479      AbstractCegarLoop]: Abstraction has 60 states and 61 transitions.
[2020-09-24 23:49:41,174 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-24 23:49:41,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions.
[2020-09-24 23:49:41,175 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2020-09-24 23:49:41,175 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:41,175 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:41,176 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 23:49:41,176 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:41,176 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:41,176 INFO  L82        PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times
[2020-09-24 23:49:41,176 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:41,177 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965294308]
[2020-09-24 23:49:41,177 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:41,187 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:41,203 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:41,494 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:46,189 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:46,189 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 115
[2020-09-24 23:49:46,189 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:46,189 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4999
[2020-09-24 23:49:46,190 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:46,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-09-24 23:49:46,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:46,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-09-24 23:49:46,190 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:46,206 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:46,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:46,208 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:46,209 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:46,209 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:46,209 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:46,209 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:46,210 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:46,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:46,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:46,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:46,210 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:46,211 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:46,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:46,242 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:46,654 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:46,654 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 100
[2020-09-24 23:49:46,654 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:46,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 424
[2020-09-24 23:49:46,655 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:46,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-09-24 23:49:46,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:46,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 96
[2020-09-24 23:49:46,655 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:46,678 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:46,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:46,700 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:47,062 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 373
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:47,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-09-24 23:49:47,064 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:47,092 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:47,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:47,113 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:47,389 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:47,390 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:49:47,390 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:47,390 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 285
[2020-09-24 23:49:47,390 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:47,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-24 23:49:47,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:47,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:49:47,391 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:47,411 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:47,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:47,428 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:47,673 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:47,673 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:47,673 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:47,673 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 253
[2020-09-24 23:49:47,674 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:47,674 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:49:47,674 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:47,674 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:49:47,674 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:47,706 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:47,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:47,719 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:47,877 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:47,877 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:47,877 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:47,877 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 164
[2020-09-24 23:49:47,877 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:47,877 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 23:49:47,878 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:47,878 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:47,878 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:47,911 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:47,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:47,922 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:48,027 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:48,027 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:48,027 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:48,027 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 109
[2020-09-24 23:49:48,027 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:48,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:48,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:48,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:48,028 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:48,049 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:48,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:48,059 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:48,124 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:48,125 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:48,125 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:48,125 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-09-24 23:49:48,125 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:48,125 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:48,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:48,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:48,126 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:48,145 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:48,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:48,152 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:48,182 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:48,182 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:48,182 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:48,183 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-24 23:49:48,183 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:48,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:48,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:48,183 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:48,183 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:48,203 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:48,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:48,207 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:48,216 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:48,217 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:48,217 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:48,217 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 23:49:48,217 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:48,218 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:48,218 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:48,218 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:48,219 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:48,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 292 backedges. 12 proven. 167 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked.
[2020-09-24 23:49:48,262 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965294308]
[2020-09-24 23:49:48,262 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:48,262 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-24 23:49:48,262 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438432376]
[2020-09-24 23:49:48,263 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-24 23:49:48,263 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:48,263 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-24 23:49:48,264 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182
[2020-09-24 23:49:48,264 INFO  L87              Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states.
[2020-09-24 23:49:48,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:48,446 INFO  L93              Difference]: Finished difference Result 71 states and 72 transitions.
[2020-09-24 23:49:48,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-24 23:49:48,446 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 90
[2020-09-24 23:49:48,447 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:48,448 INFO  L225             Difference]: With dead ends: 71
[2020-09-24 23:49:48,448 INFO  L226             Difference]: Without dead ends: 65
[2020-09-24 23:49:48,449 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506
[2020-09-24 23:49:48,449 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2020-09-24 23:49:48,454 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2020-09-24 23:49:48,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-09-24 23:49:48,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions.
[2020-09-24 23:49:48,456 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90
[2020-09-24 23:49:48,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:48,456 INFO  L479      AbstractCegarLoop]: Abstraction has 65 states and 66 transitions.
[2020-09-24 23:49:48,456 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-24 23:49:48,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions.
[2020-09-24 23:49:48,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2020-09-24 23:49:48,457 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:48,457 INFO  L422         BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:49:48,457 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-24 23:49:48,458 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:48,458 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:48,458 INFO  L82        PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times
[2020-09-24 23:49:48,458 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:48,458 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162421140]
[2020-09-24 23:49:48,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:48,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:48,498 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:48,877 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:53,487 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 126
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5007
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 44
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:53,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 114
[2020-09-24 23:49:53,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:53,526 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:53,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:53,528 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:53,529 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:53,530 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:53,530 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:53,530 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:53,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:53,555 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:53,855 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:58,545 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:58,545 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 111
[2020-09-24 23:49:58,545 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:58,545 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5003
[2020-09-24 23:49:58,546 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:58,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 43
[2020-09-24 23:49:58,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:58,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-09-24 23:49:58,546 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:58,582 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:58,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:58,608 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:59,487 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:59,488 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 100
[2020-09-24 23:49:59,488 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:59,488 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 893
[2020-09-24 23:49:59,488 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:59,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 39
[2020-09-24 23:49:59,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:59,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 97
[2020-09-24 23:49:59,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:59,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:59,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:59,556 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:00,275 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:00,275 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 23:50:00,275 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:00,275 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 729
[2020-09-24 23:50:00,276 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:00,276 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 35
[2020-09-24 23:50:00,276 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:00,276 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-09-24 23:50:00,276 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:00,319 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:00,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:00,343 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:00,881 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:00,881 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:50:00,881 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:00,881 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 550
[2020-09-24 23:50:00,882 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:00,882 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 31
[2020-09-24 23:50:00,882 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:00,882 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:50:00,882 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:00,927 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:00,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:00,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:01,360 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:01,361 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:50:01,361 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:01,361 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 425
[2020-09-24 23:50:01,362 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:01,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-09-24 23:50:01,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:01,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:50:01,362 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:01,418 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:01,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:01,431 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:01,714 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:01,714 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:50:01,714 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:01,714 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 288
[2020-09-24 23:50:01,715 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:01,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-09-24 23:50:01,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:01,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:50:01,715 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:01,767 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:01,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:01,777 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:01,958 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:01,958 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:50:01,958 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:01,958 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 186
[2020-09-24 23:50:01,959 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:01,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 23:50:01,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:01,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:50:01,959 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:02,012 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:02,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:02,021 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:02,118 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:02,118 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:50:02,118 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:02,118 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 100
[2020-09-24 23:50:02,119 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:02,119 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:50:02,119 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:02,119 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:50:02,119 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:02,178 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:02,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:02,185 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:02,243 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:02,243 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:50:02,243 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:02,243 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 60
[2020-09-24 23:50:02,244 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:02,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:50:02,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:02,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:50:02,244 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:02,306 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:02,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:02,310 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:02,325 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:02,325 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:50:02,326 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:02,326 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 23:50:02,326 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:02,326 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:50:02,326 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:02,326 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:50:02,327 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:02,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 369 backedges. 13 proven. 230 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2020-09-24 23:50:02,430 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162421140]
[2020-09-24 23:50:02,430 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:50:02,430 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27
[2020-09-24 23:50:02,431 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646468146]
[2020-09-24 23:50:02,431 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 27 states
[2020-09-24 23:50:02,431 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:50:02,432 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2020-09-24 23:50:02,432 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702
[2020-09-24 23:50:02,432 INFO  L87              Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 27 states.
[2020-09-24 23:50:03,126 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:50:03,127 INFO  L93              Difference]: Finished difference Result 76 states and 77 transitions.
[2020-09-24 23:50:03,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2020-09-24 23:50:03,127 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states. Word has length 99
[2020-09-24 23:50:03,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:50:03,128 INFO  L225             Difference]: With dead ends: 76
[2020-09-24 23:50:03,129 INFO  L226             Difference]: Without dead ends: 70
[2020-09-24 23:50:03,131 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=652, Invalid=2428, Unknown=0, NotChecked=0, Total=3080
[2020-09-24 23:50:03,131 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2020-09-24 23:50:03,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2020-09-24 23:50:03,136 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-09-24 23:50:03,137 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions.
[2020-09-24 23:50:03,137 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99
[2020-09-24 23:50:03,138 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:50:03,138 INFO  L479      AbstractCegarLoop]: Abstraction has 70 states and 71 transitions.
[2020-09-24 23:50:03,138 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 27 states.
[2020-09-24 23:50:03,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions.
[2020-09-24 23:50:03,139 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2020-09-24 23:50:03,139 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:50:03,139 INFO  L422         BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 23:50:03,139 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-24 23:50:03,140 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:50:03,140 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:50:03,140 INFO  L82        PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times
[2020-09-24 23:50:03,140 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:50:03,141 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486417313]
[2020-09-24 23:50:03,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:50:03,156 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:03,174 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:03,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:08,159 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:08,159 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 137
[2020-09-24 23:50:08,159 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:50:08,159 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-24 23:50:08,160 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:08,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 48
[2020-09-24 23:50:08,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:50:08,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 125
[2020-09-24 23:50:08,160 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:08,190 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:50:08,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:08,192 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:08,193 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:08,193 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:50:08,193 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:08,193 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:50:08,194 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:08,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:50:08,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:08,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:50:08,194 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:08,195 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:50:08,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:08,227 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:08,606 FATAL L256   erpolLogProxyWrapper]: Now shrinking...