/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_25x0-2.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 23:49:12,398 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 23:49:12,402 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 23:49:12,428 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 23:49:12,429 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 23:49:12,430 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 23:49:12,432 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 23:49:12,434 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 23:49:12,436 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 23:49:12,437 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 23:49:12,438 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 23:49:12,440 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 23:49:12,440 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 23:49:12,441 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 23:49:12,442 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 23:49:12,444 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 23:49:12,445 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 23:49:12,446 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 23:49:12,448 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 23:49:12,451 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 23:49:12,453 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 23:49:12,454 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 23:49:12,456 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 23:49:12,457 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 23:49:12,460 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 23:49:12,460 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 23:49:12,460 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 23:49:12,462 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 23:49:12,462 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 23:49:12,463 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 23:49:12,464 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 23:49:12,465 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 23:49:12,466 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 23:49:12,467 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 23:49:12,468 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 23:49:12,468 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 23:49:12,469 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 23:49:12,469 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 23:49:12,470 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 23:49:12,471 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 23:49:12,472 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 23:49:12,473 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 23:49:12,500 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 23:49:12,500 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 23:49:12,502 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 23:49:12,502 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 23:49:12,502 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 23:49:12,502 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 23:49:12,503 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 23:49:12,503 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 23:49:12,503 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 23:49:12,503 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 23:49:12,503 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 23:49:12,504 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 23:49:12,504 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 23:49:12,504 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 23:49:12,504 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 23:49:12,504 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 23:49:12,505 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 23:49:12,505 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 23:49:12,505 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 23:49:12,505 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 23:49:12,505 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 23:49:12,506 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 23:49:12,506 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 23:49:12,506 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 23:49:12,506 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 23:49:12,507 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 23:49:12,507 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 23:49:12,507 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 23:49:12,507 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 23:49:12,507 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 23:49:12,986 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 23:49:13,003 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 23:49:13,008 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 23:49:13,010 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 23:49:13,010 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 23:49:13,011 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-2.c
[2020-09-24 23:49:13,095 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad48c20b2/c49f59018d7d4731958d78480dfeadbe/FLAG86dbbbd89
[2020-09-24 23:49:13,583 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 23:49:13,584 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_25x0-2.c
[2020-09-24 23:49:13,592 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad48c20b2/c49f59018d7d4731958d78480dfeadbe/FLAG86dbbbd89
[2020-09-24 23:49:13,947 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad48c20b2/c49f59018d7d4731958d78480dfeadbe
[2020-09-24 23:49:13,962 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 23:49:13,969 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 23:49:13,970 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 23:49:13,970 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 23:49:13,974 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 23:49:13,976 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:13" (1/1) ...
[2020-09-24 23:49:13,980 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad4c324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:13, skipping insertion in model container
[2020-09-24 23:49:13,980 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:13" (1/1) ...
[2020-09-24 23:49:13,990 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 23:49:14,015 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 23:49:14,282 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:49:14,288 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 23:49:14,305 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 23:49:14,320 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 23:49:14,321 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14 WrapperNode
[2020-09-24 23:49:14,321 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 23:49:14,322 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 23:49:14,322 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 23:49:14,322 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 23:49:14,337 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,337 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,420 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,420 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,425 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,431 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,432 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (1/1) ...
[2020-09-24 23:49:14,435 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 23:49:14,435 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 23:49:14,435 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 23:49:14,436 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 23:49:14,437 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (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 23:49:14,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 23:49:14,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 23:49:14,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure sum
[2020-09-24 23:49:14,528 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 23:49:14,528 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 23:49:14,528 INFO  L130     BoogieDeclarations]: Found specification of procedure sum
[2020-09-24 23:49:14,529 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 23:49:14,529 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 23:49:14,529 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 23:49:14,745 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 23:49:14,746 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 23:49:14,751 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:14 BoogieIcfgContainer
[2020-09-24 23:49:14,752 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 23:49:14,768 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 23:49:14,769 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 23:49:14,775 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 23:49:14,775 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:49:13" (1/3) ...
[2020-09-24 23:49:14,777 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354afc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:14, skipping insertion in model container
[2020-09-24 23:49:14,777 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:14" (2/3) ...
[2020-09-24 23:49:14,778 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354afc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:14, skipping insertion in model container
[2020-09-24 23:49:14,778 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:14" (3/3) ...
[2020-09-24 23:49:14,781 INFO  L109   eAbstractionObserver]: Analyzing ICFG sum_25x0-2.c
[2020-09-24 23:49:14,798 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 23:49:14,825 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 23:49:14,855 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 23:49:14,894 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 23:49:14,894 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 23:49:14,894 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 23:49:14,894 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 23:49:14,894 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 23:49:14,895 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 23:49:14,895 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 23:49:14,895 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 23:49:14,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states.
[2020-09-24 23:49:14,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-24 23:49:14,923 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:14,925 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 23:49:14,925 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:14,932 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:14,932 INFO  L82        PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times
[2020-09-24 23:49:14,941 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:14,942 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215546869]
[2020-09-24 23:49:14,942 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:15,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,101 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,223 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,293 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:15,294 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 23:49:15,294 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:15,294 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 226
[2020-09-24 23:49:15,297 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:15,298 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 23:49:15,298 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:15,298 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 23:49:15,299 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 23:49:15,375 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:15,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,380 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,386 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:15,387 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:15,387 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:15,387 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 23:49:15,388 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:15,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:15,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:15,390 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:15,391 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 23:49:15,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:15,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,427 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,503 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:15,503 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:15,504 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:15,504 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 86
[2020-09-24 23:49:15,504 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:15,506 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 23:49:15,506 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:15,506 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 23:49:15,507 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 23:49:15,560 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 23:49:15,561 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215546869]
[2020-09-24 23:49:15,564 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 23:49:15,565 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 23:49:15,566 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674065281]
[2020-09-24 23:49:15,573 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 23:49:15,574 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:15,591 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 23:49:15,593 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 23:49:15,596 INFO  L87              Difference]: Start difference. First operand 27 states. Second operand 5 states.
[2020-09-24 23:49:15,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:15,697 INFO  L93              Difference]: Finished difference Result 39 states and 42 transitions.
[2020-09-24 23:49:15,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 23:49:15,700 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-09-24 23:49:15,701 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:15,714 INFO  L225             Difference]: With dead ends: 39
[2020-09-24 23:49:15,714 INFO  L226             Difference]: Without dead ends: 25
[2020-09-24 23:49:15,718 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 23:49:15,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2020-09-24 23:49:15,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2020-09-24 23:49:15,775 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2020-09-24 23:49:15,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2020-09-24 23:49:15,779 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18
[2020-09-24 23:49:15,779 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:15,779 INFO  L479      AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2020-09-24 23:49:15,779 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 23:49:15,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2020-09-24 23:49:15,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-09-24 23:49:15,782 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:15,783 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 23:49:15,783 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 23:49:15,784 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:15,784 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:15,784 INFO  L82        PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times
[2020-09-24 23:49:15,785 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:15,785 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791583373]
[2020-09-24 23:49:15,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:15,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:15,809 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:15,902 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,409 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:16,410 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-24 23:49:16,410 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:16,411 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 609
[2020-09-24 23:49:16,411 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 23:49:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:16,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-24 23:49:16,413 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:16,490 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:16,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:16,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,494 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:16,495 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:16,495 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:16,495 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 23:49:16,496 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:16,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:16,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:16,497 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:16,497 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:16,498 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:16,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:16,511 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,553 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,703 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:16,704 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:16,704 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:16,704 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 197
[2020-09-24 23:49:16,705 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:16,705 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:16,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:16,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:16,709 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 23:49:16,751 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:16,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:16,758 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:16,782 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:16,782 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:16,782 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:16,783 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-24 23:49:16,783 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:16,783 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:16,783 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:16,784 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:16,784 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:16,825 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 23:49:16,825 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791583373]
[2020-09-24 23:49:16,826 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:16,826 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 23:49:16,826 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349780840]
[2020-09-24 23:49:16,828 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 23:49:16,829 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:16,829 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 23:49:16,830 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2020-09-24 23:49:16,830 INFO  L87              Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states.
[2020-09-24 23:49:17,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:17,013 INFO  L93              Difference]: Finished difference Result 36 states and 37 transitions.
[2020-09-24 23:49:17,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 23:49:17,014 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 27
[2020-09-24 23:49:17,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:17,015 INFO  L225             Difference]: With dead ends: 36
[2020-09-24 23:49:17,015 INFO  L226             Difference]: Without dead ends: 30
[2020-09-24 23:49:17,017 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 23:49:17,017 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-09-24 23:49:17,023 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2020-09-24 23:49:17,023 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-09-24 23:49:17,024 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2020-09-24 23:49:17,024 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27
[2020-09-24 23:49:17,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:17,025 INFO  L479      AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2020-09-24 23:49:17,025 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 23:49:17,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2020-09-24 23:49:17,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-09-24 23:49:17,027 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:17,027 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 23:49:17,027 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 23:49:17,028 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:17,028 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:17,028 INFO  L82        PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times
[2020-09-24 23:49:17,028 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:17,029 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232683128]
[2020-09-24 23:49:17,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:17,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,045 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,134 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,577 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,578 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-24 23:49:17,578 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:17,578 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 538
[2020-09-24 23:49:17,578 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,579 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 23:49:17,579 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:17,579 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:17,579 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:17,594 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:17,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,596 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,597 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,597 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:17,597 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,598 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:17,598 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:17,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,599 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:17,599 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:17,600 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:17,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,612 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,697 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,697 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:17,698 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,698 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 90
[2020-09-24 23:49:17,698 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,699 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 23:49:17,699 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:17,699 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-09-24 23:49:17,699 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,722 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:17,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,734 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,788 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,789 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:17,789 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,790 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-09-24 23:49:17,790 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,790 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:17,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:17,792 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,820 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:17,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:17,826 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:17,840 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:17,840 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:17,841 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:17,841 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 23:49:17,841 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:17,842 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:17,842 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:17,842 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:17,843 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:17,865 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 23:49:17,865 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232683128]
[2020-09-24 23:49:17,866 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:17,866 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 23:49:17,866 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002416798]
[2020-09-24 23:49:17,867 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 23:49:17,867 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:17,868 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 23:49:17,868 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 23:49:17,869 INFO  L87              Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states.
[2020-09-24 23:49:17,966 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:17,966 INFO  L93              Difference]: Finished difference Result 41 states and 42 transitions.
[2020-09-24 23:49:17,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 23:49:17,967 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 36
[2020-09-24 23:49:17,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:17,968 INFO  L225             Difference]: With dead ends: 41
[2020-09-24 23:49:17,968 INFO  L226             Difference]: Without dead ends: 35
[2020-09-24 23:49:17,969 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 23:49:17,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-09-24 23:49:17,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-09-24 23:49:17,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-09-24 23:49:17,977 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions.
[2020-09-24 23:49:17,978 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36
[2020-09-24 23:49:17,978 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:17,978 INFO  L479      AbstractCegarLoop]: Abstraction has 35 states and 36 transitions.
[2020-09-24 23:49:17,978 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 23:49:17,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions.
[2020-09-24 23:49:17,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 23:49:17,980 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:17,980 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 23:49:17,981 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 23:49:17,981 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:17,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:17,981 INFO  L82        PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times
[2020-09-24 23:49:17,982 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:17,982 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397999540]
[2020-09-24 23:49:17,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:17,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:18,003 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:18,136 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:18,797 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:18,797 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-24 23:49:18,797 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:18,797 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 802
[2020-09-24 23:49:18,798 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:18,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-24 23:49:18,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:18,798 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-24 23:49:18,799 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:18,814 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:18,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:18,816 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:18,816 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:18,817 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:18,817 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:18,817 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:18,817 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:18,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:18,818 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:18,818 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:18,818 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:18,819 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:18,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:18,834 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:18,976 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:18,977 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:18,977 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:18,977 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 149
[2020-09-24 23:49:18,978 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:18,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-24 23:49:18,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:18,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-09-24 23:49:18,979 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:19,004 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:19,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:19,019 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,120 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:19,120 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:19,121 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:19,121 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-09-24 23:49:19,121 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:19,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:19,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:19,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:19,123 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:19,159 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:19,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:19,170 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,222 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:19,222 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:19,222 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:19,223 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 56
[2020-09-24 23:49:19,223 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:19,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:19,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:19,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:19,224 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:19,243 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:19,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:19,249 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,266 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:19,266 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:19,267 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:19,267 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-24 23:49:19,268 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:19,268 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:19,268 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:19,269 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:19,269 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:19,316 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 23:49:19,317 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397999540]
[2020-09-24 23:49:19,317 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:19,317 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-24 23:49:19,318 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112781331]
[2020-09-24 23:49:19,318 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 23:49:19,318 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:19,319 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 23:49:19,319 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2020-09-24 23:49:19,319 INFO  L87              Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states.
[2020-09-24 23:49:19,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:19,414 INFO  L93              Difference]: Finished difference Result 46 states and 47 transitions.
[2020-09-24 23:49:19,414 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 23:49:19,415 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 45
[2020-09-24 23:49:19,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:19,416 INFO  L225             Difference]: With dead ends: 46
[2020-09-24 23:49:19,417 INFO  L226             Difference]: Without dead ends: 40
[2020-09-24 23:49:19,417 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 23:49:19,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-09-24 23:49:19,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2020-09-24 23:49:19,424 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2020-09-24 23:49:19,425 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions.
[2020-09-24 23:49:19,426 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45
[2020-09-24 23:49:19,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:19,426 INFO  L479      AbstractCegarLoop]: Abstraction has 40 states and 41 transitions.
[2020-09-24 23:49:19,426 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 23:49:19,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions.
[2020-09-24 23:49:19,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-09-24 23:49:19,428 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:19,428 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 23:49:19,429 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 23:49:19,429 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:19,429 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:19,429 INFO  L82        PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times
[2020-09-24 23:49:19,430 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:19,430 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178622901]
[2020-09-24 23:49:19,430 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:19,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:19,454 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:19,603 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:21,419 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:21,420 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 71
[2020-09-24 23:49:21,420 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:21,420 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1974
[2020-09-24 23:49:21,420 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:21,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 23:49:21,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:21,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-09-24 23:49:21,421 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:21,439 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:21,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:21,441 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:21,441 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:21,442 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:21,442 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:21,442 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:21,442 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:21,443 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:21,443 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:21,443 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:21,443 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:21,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:21,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:21,468 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:21,713 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:21,713 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:21,714 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:21,714 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 255
[2020-09-24 23:49:21,714 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:21,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 23:49:21,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:21,716 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 52
[2020-09-24 23:49:21,716 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:21,750 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:21,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:21,769 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:21,945 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:21,946 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:21,946 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:21,947 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 185
[2020-09-24 23:49:21,947 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:21,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:21,948 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:21,948 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:21,948 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:21,971 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:21,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:21,988 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:22,103 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:22,104 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:22,104 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:22,104 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 122
[2020-09-24 23:49:22,105 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:22,105 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:22,105 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:22,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:22,106 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:22,126 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:22,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:22,135 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:22,179 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:22,180 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:22,180 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:22,180 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 48
[2020-09-24 23:49:22,181 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:22,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:22,181 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:22,182 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:22,182 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:22,202 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:22,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:22,210 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:22,222 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:22,222 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:22,222 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:22,223 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 23:49:22,223 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:22,223 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:22,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:22,224 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:22,224 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:22,254 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 23:49:22,255 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178622901]
[2020-09-24 23:49:22,255 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:22,256 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-24 23:49:22,256 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541418361]
[2020-09-24 23:49:22,257 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 23:49:22,257 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:22,257 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 23:49:22,258 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2020-09-24 23:49:22,258 INFO  L87              Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states.
[2020-09-24 23:49:22,374 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:22,375 INFO  L93              Difference]: Finished difference Result 51 states and 52 transitions.
[2020-09-24 23:49:22,375 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-09-24 23:49:22,375 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 54
[2020-09-24 23:49:22,376 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:22,377 INFO  L225             Difference]: With dead ends: 51
[2020-09-24 23:49:22,377 INFO  L226             Difference]: Without dead ends: 45
[2020-09-24 23:49:22,378 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 23:49:22,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2020-09-24 23:49:22,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2020-09-24 23:49:22,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-09-24 23:49:22,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2020-09-24 23:49:22,386 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54
[2020-09-24 23:49:22,386 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:22,386 INFO  L479      AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2020-09-24 23:49:22,386 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 23:49:22,386 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2020-09-24 23:49:22,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-09-24 23:49:22,388 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:22,388 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 23:49:22,388 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 23:49:22,388 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:22,389 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:22,389 INFO  L82        PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times
[2020-09-24 23:49:22,389 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:22,389 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636982310]
[2020-09-24 23:49:22,390 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:22,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:22,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:22,559 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:26,433 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:26,434 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 23:49:26,434 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:26,434 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4030
[2020-09-24 23:49:26,434 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:26,434 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-24 23:49:26,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:26,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-09-24 23:49:26,435 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:26,453 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:26,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:26,455 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:26,456 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:26,456 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:26,456 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:26,456 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:26,456 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:26,457 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:26,457 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:26,457 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:26,457 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:26,459 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:26,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:26,479 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:26,738 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:26,739 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:26,739 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:26,739 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 269
[2020-09-24 23:49:26,739 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:26,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-24 23:49:26,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:26,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-09-24 23:49:26,740 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:26,773 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:26,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:26,791 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:27,019 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:27,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:27,020 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:27,020 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 236
[2020-09-24 23:49:27,020 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:27,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 23:49:27,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:27,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:27,021 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:27,051 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:27,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:27,066 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:27,218 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:27,218 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:27,219 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:27,219 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 159
[2020-09-24 23:49:27,228 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:27,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:27,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:27,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:27,230 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:27,265 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:27,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:27,277 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:27,349 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:27,350 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:27,350 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:27,350 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 77
[2020-09-24 23:49:27,351 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:27,351 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:27,351 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:27,352 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:27,352 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:27,372 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:27,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:27,381 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:27,425 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:27,425 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:27,426 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:27,426 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-09-24 23:49:27,426 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:27,426 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:27,427 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:27,427 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:27,427 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:27,444 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:27,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:27,450 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:27,464 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:27,464 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:27,465 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:27,465 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 23:49:27,465 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:27,465 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:27,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:27,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:27,466 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:27,499 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 23:49:27,500 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636982310]
[2020-09-24 23:49:27,501 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:27,501 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-24 23:49:27,502 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112189713]
[2020-09-24 23:49:27,502 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 23:49:27,503 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:27,503 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 23:49:27,503 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2020-09-24 23:49:27,503 INFO  L87              Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states.
[2020-09-24 23:49:27,636 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:27,636 INFO  L93              Difference]: Finished difference Result 56 states and 57 transitions.
[2020-09-24 23:49:27,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 23:49:27,637 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 63
[2020-09-24 23:49:27,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:27,639 INFO  L225             Difference]: With dead ends: 56
[2020-09-24 23:49:27,639 INFO  L226             Difference]: Without dead ends: 50
[2020-09-24 23:49:27,641 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 23:49:27,641 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-09-24 23:49:27,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2020-09-24 23:49:27,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-09-24 23:49:27,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions.
[2020-09-24 23:49:27,655 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63
[2020-09-24 23:49:27,656 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:27,656 INFO  L479      AbstractCegarLoop]: Abstraction has 50 states and 51 transitions.
[2020-09-24 23:49:27,656 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 23:49:27,656 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions.
[2020-09-24 23:49:27,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2020-09-24 23:49:27,661 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:27,661 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 23:49:27,661 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 23:49:27,663 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:27,663 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:27,664 INFO  L82        PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times
[2020-09-24 23:49:27,664 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:27,664 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277520222]
[2020-09-24 23:49:27,664 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:27,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:27,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:27,967 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:31,694 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:31,695 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 93
[2020-09-24 23:49:31,695 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:31,695 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4017
[2020-09-24 23:49:31,696 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:31,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-09-24 23:49:31,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:31,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 81
[2020-09-24 23:49:31,696 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:31,731 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:31,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:31,733 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:31,734 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:31,735 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:31,735 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:31,735 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:31,735 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:31,735 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:31,736 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:31,736 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:31,736 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:31,737 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:31,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:31,764 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:31,966 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:34,770 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:34,770 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:49:34,771 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:34,771 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3016
[2020-09-24 23:49:34,771 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:34,772 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 31
[2020-09-24 23:49:34,772 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:34,773 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:49:34,773 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:34,843 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:34,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:34,868 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:35,474 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:35,474 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:35,475 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:35,475 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 617
[2020-09-24 23:49:35,475 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:35,475 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-09-24 23:49:35,476 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:35,476 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:49:35,476 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:35,530 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:35,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:35,554 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:35,933 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:35,934 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:35,934 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:35,934 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 389
[2020-09-24 23:49:35,934 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:35,935 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-09-24 23:49:35,935 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:35,935 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:35,935 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:36,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:36,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:36,025 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:36,282 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:36,283 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:36,283 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:36,283 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 264
[2020-09-24 23:49:36,283 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:36,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 23:49:36,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:36,284 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:36,284 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:36,340 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:36,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:36,353 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:36,518 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:36,519 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:36,519 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:36,520 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 171
[2020-09-24 23:49:36,520 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:36,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:49:36,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:36,522 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:36,522 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:36,591 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:36,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:36,599 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:36,705 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:36,706 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:36,706 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:36,707 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 109
[2020-09-24 23:49:36,707 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:36,708 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:36,708 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:36,709 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:36,709 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:36,794 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:36,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:36,801 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:36,814 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:36,815 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:36,815 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:36,816 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 23:49:36,816 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:36,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:36,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:36,818 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:36,818 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 23:49:36,930 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 23:49:36,930 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277520222]
[2020-09-24 23:49:36,931 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:36,931 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2020-09-24 23:49:36,932 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807601271]
[2020-09-24 23:49:36,934 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-09-24 23:49:36,935 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:36,935 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-09-24 23:49:36,936 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420
[2020-09-24 23:49:36,936 INFO  L87              Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states.
[2020-09-24 23:49:37,495 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:37,496 INFO  L93              Difference]: Finished difference Result 61 states and 62 transitions.
[2020-09-24 23:49:37,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-09-24 23:49:37,496 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 72
[2020-09-24 23:49:37,497 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:37,500 INFO  L225             Difference]: With dead ends: 61
[2020-09-24 23:49:37,500 INFO  L226             Difference]: Without dead ends: 55
[2020-09-24 23:49:37,504 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892
[2020-09-24 23:49:37,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-09-24 23:49:37,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2020-09-24 23:49:37,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-09-24 23:49:37,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions.
[2020-09-24 23:49:37,515 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72
[2020-09-24 23:49:37,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:37,516 INFO  L479      AbstractCegarLoop]: Abstraction has 55 states and 56 transitions.
[2020-09-24 23:49:37,518 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-09-24 23:49:37,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions.
[2020-09-24 23:49:37,519 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2020-09-24 23:49:37,519 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:37,520 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 23:49:37,520 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 23:49:37,520 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:37,520 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:37,520 INFO  L82        PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times
[2020-09-24 23:49:37,523 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:37,524 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045967738]
[2020-09-24 23:49:37,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:37,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:37,547 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:37,848 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:42,443 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:42,444 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 104
[2020-09-24 23:49:42,444 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:42,444 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4907
[2020-09-24 23:49:42,444 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:42,444 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-09-24 23:49:42,444 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:42,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-09-24 23:49:42,445 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:42,469 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:42,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:42,471 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:42,472 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:42,472 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:42,472 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:42,472 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:49:42,472 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:42,473 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:42,473 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:42,473 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:42,473 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:42,474 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:42,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:42,498 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:42,852 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:42,852 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 23:49:42,853 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:42,853 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 365
[2020-09-24 23:49:42,853 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:42,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-09-24 23:49:42,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:49:42,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 85
[2020-09-24 23:49:42,854 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:42,903 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:42,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:42,926 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:43,237 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:43,237 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:49:43,237 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:43,238 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 322
[2020-09-24 23:49:43,238 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:43,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-24 23:49:43,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:43,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:49:43,238 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:43,278 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:43,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:43,297 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:43,535 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:43,536 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:43,536 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:43,536 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 247
[2020-09-24 23:49:43,536 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:43,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:49:43,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:43,537 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:49:43,537 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:43,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:43,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:43,581 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:43,743 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:43,743 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:43,744 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:43,744 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 169
[2020-09-24 23:49:43,744 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:43,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 23:49:43,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:43,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:43,745 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:43,765 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:43,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:43,776 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:43,886 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:43,887 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:43,887 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:43,887 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 116
[2020-09-24 23:49:43,887 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:43,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:43,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:43,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:43,889 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:43,911 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:43,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:43,923 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:44,003 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:44,004 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:44,004 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:44,005 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 84
[2020-09-24 23:49:44,005 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:44,005 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:49:44,005 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:44,006 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:44,006 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:44,026 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:44,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:44,032 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:44,065 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:44,066 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:44,066 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:44,066 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-09-24 23:49:44,066 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:44,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:44,067 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:44,067 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:44,067 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:44,087 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:44,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:44,091 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:44,103 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:44,103 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:44,104 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:44,104 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 23:49:44,104 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:44,104 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:49:44,105 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:44,105 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:44,105 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:49:44,148 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 23:49:44,149 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045967738]
[2020-09-24 23:49:44,149 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:44,149 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-24 23:49:44,150 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583920721]
[2020-09-24 23:49:44,150 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-24 23:49:44,150 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:44,151 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-24 23:49:44,151 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2020-09-24 23:49:44,151 INFO  L87              Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states.
[2020-09-24 23:49:44,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:44,313 INFO  L93              Difference]: Finished difference Result 66 states and 67 transitions.
[2020-09-24 23:49:44,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 23:49:44,313 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 81
[2020-09-24 23:49:44,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:44,315 INFO  L225             Difference]: With dead ends: 66
[2020-09-24 23:49:44,315 INFO  L226             Difference]: Without dead ends: 60
[2020-09-24 23:49:44,316 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 23:49:44,316 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-09-24 23:49:44,321 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2020-09-24 23:49:44,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-09-24 23:49:44,322 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions.
[2020-09-24 23:49:44,322 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81
[2020-09-24 23:49:44,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:44,323 INFO  L479      AbstractCegarLoop]: Abstraction has 60 states and 61 transitions.
[2020-09-24 23:49:44,323 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-24 23:49:44,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions.
[2020-09-24 23:49:44,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2020-09-24 23:49:44,324 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:44,324 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 23:49:44,325 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 23:49:44,325 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:44,325 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:44,325 INFO  L82        PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times
[2020-09-24 23:49:44,325 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:44,326 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100742765]
[2020-09-24 23:49:44,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:44,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:44,354 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:44,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:49,340 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:49,340 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 115
[2020-09-24 23:49:49,340 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:49,340 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4999
[2020-09-24 23:49:49,340 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:49,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 40
[2020-09-24 23:49:49,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:49:49,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-09-24 23:49:49,341 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:49,383 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:49:49,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:49,385 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:49,386 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:49,387 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:49:49,387 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:49,387 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 23:49:49,387 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:49,389 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:49:49,389 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:49,389 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:49:49,389 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 23:49:49,390 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:49:49,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:49,416 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:49,674 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:54,403 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:54,403 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 100
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 39
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 97
[2020-09-24 23:49:54,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:54,461 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:54,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:54,499 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:55,284 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:55,284 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 23:49:55,284 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:55,284 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 799
[2020-09-24 23:49:55,285 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:55,285 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 35
[2020-09-24 23:49:55,285 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:55,285 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-09-24 23:49:55,285 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:55,342 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:55,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:55,364 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:55,944 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:55,945 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:49:55,945 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:55,945 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 591
[2020-09-24 23:49:55,945 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:55,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 31
[2020-09-24 23:49:55,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:55,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:49:55,946 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:55,992 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:56,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:56,011 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:56,420 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:56,420 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:49:56,420 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:56,420 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 417
[2020-09-24 23:49:56,420 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:56,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-09-24 23:49:56,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:56,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:49:56,421 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:56,472 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:56,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:56,486 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:56,793 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:56,794 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:49:56,794 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:56,794 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 313
[2020-09-24 23:49:56,794 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:56,802 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-09-24 23:49:56,802 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:56,802 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:49:56,803 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-24 23:49:56,858 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:56,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:56,870 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:57,058 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:57,058 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:49:57,058 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:57,059 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 194
[2020-09-24 23:49:57,059 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:57,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 23:49:57,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:57,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:49:57,059 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:57,128 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:57,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:57,135 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:57,250 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:57,250 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:49:57,251 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:57,251 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 118
[2020-09-24 23:49:57,251 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:57,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:49:57,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:57,252 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:49:57,252 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:57,311 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:57,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:57,318 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:57,367 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:57,367 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:49:57,367 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:57,367 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 51
[2020-09-24 23:49:57,368 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:57,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:49:57,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:57,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:49:57,368 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:57,430 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:49:57,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:57,435 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:57,444 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:49:57,445 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:49:57,445 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:49:57,445 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 23:49:57,445 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:49:57,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:49:57,445 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:49:57,446 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:49:57,446 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:49:57,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 292 backedges. 16 proven. 176 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2020-09-24 23:49:57,544 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100742765]
[2020-09-24 23:49:57,545 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:49:57,545 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2020-09-24 23:49:57,545 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753211568]
[2020-09-24 23:49:57,546 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-09-24 23:49:57,546 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:49:57,547 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-09-24 23:49:57,547 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600
[2020-09-24 23:49:57,547 INFO  L87              Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 25 states.
[2020-09-24 23:49:58,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:49:58,293 INFO  L93              Difference]: Finished difference Result 71 states and 72 transitions.
[2020-09-24 23:49:58,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2020-09-24 23:49:58,294 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 90
[2020-09-24 23:49:58,295 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:49:58,295 INFO  L225             Difference]: With dead ends: 71
[2020-09-24 23:49:58,295 INFO  L226             Difference]: Without dead ends: 65
[2020-09-24 23:49:58,297 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=2311, Unknown=0, NotChecked=0, Total=2862
[2020-09-24 23:49:58,298 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2020-09-24 23:49:58,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2020-09-24 23:49:58,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-09-24 23:49:58,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions.
[2020-09-24 23:49:58,304 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90
[2020-09-24 23:49:58,305 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:49:58,305 INFO  L479      AbstractCegarLoop]: Abstraction has 65 states and 66 transitions.
[2020-09-24 23:49:58,305 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-09-24 23:49:58,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions.
[2020-09-24 23:49:58,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2020-09-24 23:49:58,306 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:49:58,306 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 23:49:58,306 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-24 23:49:58,306 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:49:58,307 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:49:58,307 INFO  L82        PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times
[2020-09-24 23:49:58,307 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:49:58,307 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223266144]
[2020-09-24 23:49:58,307 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:49:58,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:49:58,339 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:49:58,664 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:03,329 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 126
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5004
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 23:50:03,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-09-24 23:50:03,331 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:03,347 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 23:50:03,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:03,348 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 23:50:03,349 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:03,350 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 23:50:03,350 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:03,350 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 23:50:03,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:03,375 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:03,872 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:03,872 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 111
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 509
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 107
[2020-09-24 23:50:03,873 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:03,901 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:03,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:03,927 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:04,368 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:04,368 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 100
[2020-09-24 23:50:04,369 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:04,369 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 454
[2020-09-24 23:50:04,369 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:04,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-09-24 23:50:04,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:04,370 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 97
[2020-09-24 23:50:04,370 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:04,391 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:04,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:04,411 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:04,786 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 385
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:04,787 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-09-24 23:50:04,788 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:04,808 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:04,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:04,826 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,122 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,122 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-24 23:50:05,123 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,123 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 305
[2020-09-24 23:50:05,123 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-24 23:50:05,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 23:50:05,124 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:05,143 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:05,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:05,160 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,354 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,354 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 67
[2020-09-24 23:50:05,354 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,355 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 202
[2020-09-24 23:50:05,355 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-24 23:50:05,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 64
[2020-09-24 23:50:05,355 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:05,380 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:05,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:05,393 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,544 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,544 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 23:50:05,544 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,544 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 157
[2020-09-24 23:50:05,544 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 23:50:05,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,545 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-09-24 23:50:05,545 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:05,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:05,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:05,578 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,679 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,679 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 23:50:05,680 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,680 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 107
[2020-09-24 23:50:05,680 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,680 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 23:50:05,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-09-24 23:50:05,681 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:05,700 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:05,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:05,708 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,770 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,770 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 23:50:05,770 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,770 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 65
[2020-09-24 23:50:05,771 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,771 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 23:50:05,771 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,771 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 23:50:05,772 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 23:50:05,800 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:05,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:05,807 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,834 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,834 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 23:50:05,835 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,835 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-09-24 23:50:05,835 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 23:50:05,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 23:50:05,836 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:05,860 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 23:50:05,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:05,864 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:05,873 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 23:50:05,873 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 23:50:05,874 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 23:50:05,874 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 23:50:05,874 FATAL L256   erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-09-24 23:50:05,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 23:50:05,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 23:50:05,875 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 23:50:05,875 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 23:50:05,938 INFO  L134       CoverageAnalysis]: Checked inductivity of 369 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2020-09-24 23:50:05,938 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223266144]
[2020-09-24 23:50:05,938 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 23:50:05,938 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-09-24 23:50:05,939 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497128666]
[2020-09-24 23:50:05,940 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-09-24 23:50:05,940 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 23:50:05,940 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-09-24 23:50:05,940 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2020-09-24 23:50:05,940 INFO  L87              Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states.
[2020-09-24 23:50:06,180 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 23:50:06,180 INFO  L93              Difference]: Finished difference Result 76 states and 77 transitions.
[2020-09-24 23:50:06,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 23:50:06,181 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 99
[2020-09-24 23:50:06,181 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 23:50:06,182 INFO  L225             Difference]: With dead ends: 76
[2020-09-24 23:50:06,182 INFO  L226             Difference]: Without dead ends: 70
[2020-09-24 23:50:06,185 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600
[2020-09-24 23:50:06,186 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2020-09-24 23:50:06,197 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2020-09-24 23:50:06,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-09-24 23:50:06,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions.
[2020-09-24 23:50:06,201 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99
[2020-09-24 23:50:06,202 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 23:50:06,202 INFO  L479      AbstractCegarLoop]: Abstraction has 70 states and 71 transitions.
[2020-09-24 23:50:06,202 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-09-24 23:50:06,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions.
[2020-09-24 23:50:06,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2020-09-24 23:50:06,206 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 23:50:06,206 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 23:50:06,207 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-24 23:50:06,207 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 23:50:06,207 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 23:50:06,207 INFO  L82        PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times
[2020-09-24 23:50:06,207 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 23:50:06,208 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732488130]
[2020-09-24 23:50:06,208 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 23:50:06,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 23:50:06,245 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 23:50:06,644 FATAL L256   erpolLogProxyWrapper]: Now shrinking...