/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:02:30,960 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:02:30,963 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:02:30,988 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:02:30,989 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:02:30,990 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:02:30,991 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 17:02:30,993 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 17:02:30,995 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 17:02:30,996 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 17:02:30,997 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 17:02:30,998 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 17:02:30,999 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:02:31,000 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:02:31,001 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:02:31,002 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:02:31,003 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:02:31,004 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:02:31,006 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:02:31,008 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:02:31,010 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:02:31,011 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:02:31,012 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:02:31,013 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:02:31,015 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:02:31,016 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:02:31,020 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:02:31,021 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:02:31,021 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:02:31,023 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:02:31,023 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 17:02:31,024 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 17:02:31,025 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:02:31,025 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:02:31,027 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:02:31,027 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:02:31,028 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 17:02:31,028 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 17:02:31,028 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 17:02:31,029 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 17:02:31,030 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:02:31,031 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 17:02:31,058 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 17:02:31,059 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:02:31,060 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:02:31,060 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 17:02:31,060 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 17:02:31,061 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:02:31,061 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 17:02:31,061 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 17:02:31,061 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 17:02:31,061 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 17:02:31,062 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:02:31,062 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:02:31,062 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:02:31,062 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 17:02:31,062 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 17:02:31,063 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 17:02:31,063 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:02:31,063 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:02:31,063 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 17:02:31,063 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 17:02:31,064 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 17:02:31,064 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:02:31,064 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:02:31,064 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:02:31,065 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:02:31,065 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 17:02:31,065 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:02:31,065 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:02:31,065 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 17:02:31,066 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;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;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;log-additional-information=true;
[2020-09-24 17:02:31,569 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:02:31,590 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:02:31,594 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:02:31,596 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 17:02:31,596 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 17:02:31,598 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c
[2020-09-24 17:02:31,669 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5531f1eb/19905a6503b4441cb820ce8f5434869c/FLAGdcadfe7f1
[2020-09-24 17:02:32,141 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 17:02:32,142 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-1.c
[2020-09-24 17:02:32,152 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5531f1eb/19905a6503b4441cb820ce8f5434869c/FLAGdcadfe7f1
[2020-09-24 17:02:32,486 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5531f1eb/19905a6503b4441cb820ce8f5434869c
[2020-09-24 17:02:32,500 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:02:32,506 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:02:32,507 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:02:32,508 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:02:32,512 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:02:32,513 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,517 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32, skipping insertion in model container
[2020-09-24 17:02:32,517 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,526 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 17:02:32,550 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:02:32,803 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:02:32,808 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 17:02:32,825 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:02:32,839 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 17:02:32,840 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32 WrapperNode
[2020-09-24 17:02:32,840 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:02:32,841 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:02:32,841 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:02:32,841 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:02:32,854 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,854 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,859 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,860 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,864 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,939 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,940 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (1/1) ...
[2020-09-24 17:02:32,942 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:02:32,943 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:02:32,943 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:02:32,943 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:02:32,944 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (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 17:02:33,024 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:02:33,024 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:02:33,025 INFO  L138     BoogieDeclarations]: Found implementation of procedure fibo
[2020-09-24 17:02:33,025 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:02:33,025 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 17:02:33,025 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:02:33,025 INFO  L130     BoogieDeclarations]: Found specification of procedure fibo
[2020-09-24 17:02:33,026 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:02:33,026 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:02:33,026 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:02:33,228 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:02:33,228 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 17:02:33,233 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:02:33 BoogieIcfgContainer
[2020-09-24 17:02:33,233 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:02:33,235 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:02:33,235 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:02:33,239 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:02:33,239 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:02:32" (1/3) ...
[2020-09-24 17:02:33,240 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:02:33, skipping insertion in model container
[2020-09-24 17:02:33,240 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:02:32" (2/3) ...
[2020-09-24 17:02:33,241 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3c78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:02:33, skipping insertion in model container
[2020-09-24 17:02:33,241 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:02:33" (3/3) ...
[2020-09-24 17:02:33,243 INFO  L109   eAbstractionObserver]: Analyzing ICFG fibo_20-1.c
[2020-09-24 17:02:33,256 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:02:33,266 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 17:02:33,313 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 17:02:33,369 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:02:33,370 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 17:02:33,370 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:02:33,370 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:02:33,372 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:02:33,372 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 17:02:33,372 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:02:33,372 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:02:33,392 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states.
[2020-09-24 17:02:33,399 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-24 17:02:33,399 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:02:33,400 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:02:33,401 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:02:33,407 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:02:33,408 INFO  L82        PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times
[2020-09-24 17:02:33,416 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:02:33,417 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776670928]
[2020-09-24 17:02:33,417 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:02:33,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:33,546 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:33,597 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:33,740 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:33,740 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 17:02:33,740 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:02:33,741 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 207
[2020-09-24 17:02:33,742 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:33,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 17:02:33,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-24 17:02:33,743 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 17:02:33,743 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 17:02:33,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:02:33,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:33,831 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:33,833 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:33,833 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:02:33,833 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:33,833 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 17:02:33,834 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:33,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:02:33,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:33,834 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:02:33,835 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:33,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-24 17:02:33,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:33,848 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:33,858 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:33,859 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:02:33,859 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:33,860 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 17:02:33,860 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:33,860 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:02:33,861 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:33,861 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 17:02:33,861 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:02:33,882 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 17:02:33,883 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776670928]
[2020-09-24 17:02:33,885 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:02:33,886 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 17:02:33,887 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625150126]
[2020-09-24 17:02:33,892 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 17:02:33,892 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:02:33,910 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 17:02:33,911 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 17:02:33,913 INFO  L87              Difference]: Start difference. First operand 31 states. Second operand 5 states.
[2020-09-24 17:02:34,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:02:34,016 INFO  L93              Difference]: Finished difference Result 44 states and 50 transitions.
[2020-09-24 17:02:34,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 17:02:34,018 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2020-09-24 17:02:34,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:02:34,030 INFO  L225             Difference]: With dead ends: 44
[2020-09-24 17:02:34,030 INFO  L226             Difference]: Without dead ends: 28
[2020-09-24 17:02:34,035 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 17:02:34,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-09-24 17:02:34,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2020-09-24 17:02:34,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-09-24 17:02:34,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2020-09-24 17:02:34,088 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16
[2020-09-24 17:02:34,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:02:34,088 INFO  L479      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2020-09-24 17:02:34,089 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 17:02:34,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2020-09-24 17:02:34,091 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-09-24 17:02:34,091 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:02:34,091 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:02:34,092 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 17:02:34,092 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:02:34,092 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:02:34,093 INFO  L82        PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times
[2020-09-24 17:02:34,093 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:02:34,093 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837360887]
[2020-09-24 17:02:34,094 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:02:34,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:34,109 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,180 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,335 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:34,335 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-24 17:02:34,336 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:02:34,336 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 232
[2020-09-24 17:02:34,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:34,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 17:02:34,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 17:02:34,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 17:02:34,337 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:02:34,356 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:02:34,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:34,358 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,360 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:34,360 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:02:34,360 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:34,360 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 17:02:34,361 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:34,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:02:34,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:34,362 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:02:34,362 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:02:34,363 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-24 17:02:34,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:34,370 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,386 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:34,386 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 17:02:34,387 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:34,387 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-24 17:02:34,387 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:34,387 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:02:34,388 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:34,388 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 17:02:34,388 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:34,407 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 17:02:34,407 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837360887]
[2020-09-24 17:02:34,407 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:02:34,408 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 17:02:34,408 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315909510]
[2020-09-24 17:02:34,410 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 17:02:34,410 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:02:34,410 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 17:02:34,411 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 17:02:34,411 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states.
[2020-09-24 17:02:34,444 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:02:34,445 INFO  L93              Difference]: Finished difference Result 36 states and 41 transitions.
[2020-09-24 17:02:34,445 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 17:02:34,445 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 17
[2020-09-24 17:02:34,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:02:34,447 INFO  L225             Difference]: With dead ends: 36
[2020-09-24 17:02:34,447 INFO  L226             Difference]: Without dead ends: 30
[2020-09-24 17:02:34,449 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 17:02:34,449 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-09-24 17:02:34,455 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2020-09-24 17:02:34,455 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-09-24 17:02:34,457 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2020-09-24 17:02:34,457 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17
[2020-09-24 17:02:34,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:02:34,457 INFO  L479      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2020-09-24 17:02:34,457 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 17:02:34,458 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2020-09-24 17:02:34,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-09-24 17:02:34,459 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:02:34,460 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:02:34,460 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 17:02:34,460 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:02:34,460 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:02:34,461 INFO  L82        PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times
[2020-09-24 17:02:34,461 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:02:34,461 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453449983]
[2020-09-24 17:02:34,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:02:34,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:34,484 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,503 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,531 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:34,816 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,404 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:36,404 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-24 17:02:36,405 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 17:02:36,405 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1927
[2020-09-24 17:02:36,405 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:36,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:02:36,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 17:02:36,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 17:02:36,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:02:36,427 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:02:36,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:36,430 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,431 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:36,432 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:02:36,433 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:36,433 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 17:02:36,433 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:36,434 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:02:36,434 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:36,434 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:02:36,435 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:02:36,437 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-24 17:02:36,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:36,453 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,483 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,567 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,631 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:36,631 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-09-24 17:02:36,631 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 17:02:36,632 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 181
[2020-09-24 17:02:36,632 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:36,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:02:36,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 17:02:36,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-09-24 17:02:36,633 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:36,660 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 17:02:36,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:36,664 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,673 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:36,673 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:02:36,673 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:36,674 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 17:02:36,674 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:36,674 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 17:02:36,674 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:36,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 17:02:36,675 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:36,677 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-09-24 17:02:36,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:36,685 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,694 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:36,695 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:02:36,695 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:36,695 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 17:02:36,696 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:36,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 17:02:36,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:36,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 17:02:36,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:36,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 17:02:36,719 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453449983]
[2020-09-24 17:02:36,720 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 17:02:36,720 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-24 17:02:36,720 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609858571]
[2020-09-24 17:02:36,721 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:02:36,721 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:02:36,722 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:02:36,722 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:02:36,722 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states.
[2020-09-24 17:02:36,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:02:36,846 INFO  L93              Difference]: Finished difference Result 44 states and 54 transitions.
[2020-09-24 17:02:36,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 17:02:36,847 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 33
[2020-09-24 17:02:36,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:02:36,850 INFO  L225             Difference]: With dead ends: 44
[2020-09-24 17:02:36,851 INFO  L226             Difference]: Without dead ends: 38
[2020-09-24 17:02:36,851 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-09-24 17:02:36,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-09-24 17:02:36,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36.
[2020-09-24 17:02:36,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-09-24 17:02:36,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions.
[2020-09-24 17:02:36,874 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33
[2020-09-24 17:02:36,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:02:36,874 INFO  L479      AbstractCegarLoop]: Abstraction has 36 states and 44 transitions.
[2020-09-24 17:02:36,874 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:02:36,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions.
[2020-09-24 17:02:36,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-09-24 17:02:36,876 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:02:36,878 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:02:36,878 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 17:02:36,878 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:02:36,879 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:02:36,879 INFO  L82        PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times
[2020-09-24 17:02:36,879 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:02:36,880 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961246050]
[2020-09-24 17:02:36,880 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:02:36,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:36,900 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,916 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:36,961 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:37,139 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:37,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:38,574 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:38,574 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 48
[2020-09-24 17:02:38,574 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 17:02:38,575 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1678
[2020-09-24 17:02:38,575 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:38,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:02:38,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 17:02:38,575 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-24 17:02:38,576 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:38,585 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:02:38,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:38,587 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:38,588 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:38,588 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:02:38,588 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:38,589 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 17:02:38,589 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:38,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:02:38,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:38,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:02:38,589 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:38,590 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-24 17:02:38,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:38,600 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:38,613 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:38,647 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:38,667 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,020 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:39,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 17:02:39,021 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 17:02:39,021 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 424
[2020-09-24 17:02:39,021 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:39,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:02:39,022 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 17:02:39,022 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-09-24 17:02:39,022 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:39,059 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 17:02:39,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:39,063 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,069 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,090 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:39,091 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 17:02:39,091 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:02:39,091 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-09-24 17:02:39,091 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:39,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 17:02:39,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:39,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 17:02:39,092 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:39,095 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 17:02:39,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:39,101 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,120 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:02:39,121 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 17:02:39,121 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:02:39,121 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-24 17:02:39,121 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:02:39,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 17:02:39,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:02:39,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 17:02:39,122 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:02:39,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-09-24 17:02:39,161 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961246050]
[2020-09-24 17:02:39,161 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 17:02:39,161 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 17:02:39,162 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869769964]
[2020-09-24 17:02:39,162 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 17:02:39,162 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:02:39,163 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 17:02:39,163 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:02:39,163 INFO  L87              Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states.
[2020-09-24 17:02:39,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:02:39,279 INFO  L93              Difference]: Finished difference Result 64 states and 92 transitions.
[2020-09-24 17:02:39,280 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 17:02:39,280 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 35
[2020-09-24 17:02:39,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:02:39,284 INFO  L225             Difference]: With dead ends: 64
[2020-09-24 17:02:39,284 INFO  L226             Difference]: Without dead ends: 58
[2020-09-24 17:02:39,285 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2020-09-24 17:02:39,285 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-09-24 17:02:39,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50.
[2020-09-24 17:02:39,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-09-24 17:02:39,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions.
[2020-09-24 17:02:39,305 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 35
[2020-09-24 17:02:39,305 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:02:39,305 INFO  L479      AbstractCegarLoop]: Abstraction has 50 states and 70 transitions.
[2020-09-24 17:02:39,305 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 17:02:39,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions.
[2020-09-24 17:02:39,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2020-09-24 17:02:39,314 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:02:39,320 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:02:39,320 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 17:02:39,320 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:02:39,321 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:02:39,321 INFO  L82        PathProgramCache]: Analyzing trace with hash 809102171, now seen corresponding path program 1 times
[2020-09-24 17:02:39,321 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:02:39,321 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572478660]
[2020-09-24 17:02:39,322 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:02:39,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:02:39,351 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,371 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,414 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,442 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,477 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:39,966 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:41,588 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:42,539 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:43,022 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:43,047 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:43,391 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:43,435 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:45,465 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:45,507 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:45,535 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:02:45,949 FATAL L256   erpolLogProxyWrapper]: Now shrinking...