/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=SMALLEST --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/Ackermann04.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:11:33,932 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:11:33,936 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:11:33,983 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:11:33,985 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:11:33,996 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:11:33,997 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 18:11:34,001 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 18:11:34,004 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2020-09-24 18:11:34,010 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:11:34,015 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:11:34,018 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:11:34,020 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:11:34,021 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:11:34,022 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:11:34,024 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:11:34,032 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:11:34,034 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:11:34,035 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:11:34,036 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:11:34,037 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:11:34,042 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:11:34,042 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:11:34,042 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:11:34,046 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:11:34,046 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-09-24 18:11:34,049 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-24 18:11:34,052 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:11:34,052 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:11:34,054 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:11:34,054 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 18:11:34,056 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 18:11:34,059 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:11:34,060 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 18:11:34,110 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 18:11:34,110 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:11:34,112 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:11:34,112 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 18:11:34,113 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 18:11:34,113 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:11:34,113 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 18:11:34,114 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 18:11:34,114 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 18:11:34,114 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 18:11:34,115 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:11:34,115 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:11:34,116 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:11:34,116 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 18:11:34,116 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 18:11:34,116 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 18:11:34,117 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:11:34,117 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:11:34,117 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 18:11:34,117 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 18:11:34,118 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 18:11:34,118 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:11:34,118 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:11:34,118 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:11:34,119 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:11:34,119 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 18:11:34,119 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:11:34,119 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:11:34,119 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 18:11:34,120 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true;
[2020-09-24 18:11:34,584 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:11:34,610 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:11:34,616 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:11:34,619 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 18:11:34,619 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 18:11:34,621 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c
[2020-09-24 18:11:34,711 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a94b62960/6f6236d559624c228bae15d987969a8f/FLAG540230b58
[2020-09-24 18:11:35,228 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 18:11:35,229 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c
[2020-09-24 18:11:35,237 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a94b62960/6f6236d559624c228bae15d987969a8f/FLAG540230b58
[2020-09-24 18:11:35,572 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a94b62960/6f6236d559624c228bae15d987969a8f
[2020-09-24 18:11:35,588 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:11:35,594 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:11:35,595 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:11:35,596 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:11:35,600 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:11:35,601 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,606 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35, skipping insertion in model container
[2020-09-24 18:11:35,606 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,615 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 18:11:35,639 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:11:35,879 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:11:35,884 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 18:11:35,903 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:11:35,920 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 18:11:35,920 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35 WrapperNode
[2020-09-24 18:11:35,920 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:11:35,921 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:11:35,921 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:11:35,922 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:11:35,935 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,936 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,941 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,942 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,946 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,948 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,950 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ...
[2020-09-24 18:11:35,952 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:11:35,952 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:11:35,953 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:11:35,953 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:11:35,954 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (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 18:11:36,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:11:36,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:11:36,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure ackermann
[2020-09-24 18:11:36,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:11:36,118 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:11:36,119 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:11:36,119 INFO  L130     BoogieDeclarations]: Found specification of procedure ackermann
[2020-09-24 18:11:36,119 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:11:36,119 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:11:36,119 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:11:36,392 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:11:36,393 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 18:11:36,399 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:36 BoogieIcfgContainer
[2020-09-24 18:11:36,399 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:11:36,401 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:11:36,401 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:11:36,405 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:11:36,406 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:35" (1/3) ...
[2020-09-24 18:11:36,407 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47812473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:36, skipping insertion in model container
[2020-09-24 18:11:36,407 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (2/3) ...
[2020-09-24 18:11:36,408 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47812473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:36, skipping insertion in model container
[2020-09-24 18:11:36,422 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:36" (3/3) ...
[2020-09-24 18:11:36,426 INFO  L109   eAbstractionObserver]: Analyzing ICFG Ackermann04.c
[2020-09-24 18:11:36,448 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:11:36,460 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:11:36,481 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:11:36,511 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:11:36,511 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 18:11:36,511 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:11:36,511 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:11:36,512 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:11:36,512 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 18:11:36,512 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:11:36,512 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:11:36,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states.
[2020-09-24 18:11:36,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-24 18:11:36,540 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:11:36,541 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:11:36,542 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:11:36,548 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:11:36,548 INFO  L82        PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times
[2020-09-24 18:11:36,557 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:11:36,558 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019022528]
[2020-09-24 18:11:36,558 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:11:36,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:36,713 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:36,924 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:36,926 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-24 18:11:36,926 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:36,926 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 239
[2020-09-24 18:11:36,931 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:36,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:11:36,935 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 18:11:36,935 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 18:11:36,935 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-24 18:11:37,016 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:11:37,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:37,020 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,025 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:37,025 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:11:37,026 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:37,026 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 18:11:37,026 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:37,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:37,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:37,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:37,028 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 18:11:37,035 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:11:37,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:37,052 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,082 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:37,082 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:37,083 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:37,083 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-09-24 18:11:37,083 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:37,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:11:37,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:37,084 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:11:37,084 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:37,115 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 18:11:37,116 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019022528]
[2020-09-24 18:11:37,118 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:11:37,119 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 18:11:37,120 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862017500]
[2020-09-24 18:11:37,126 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:11:37,127 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:11:37,143 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:11:37,144 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:11:37,147 INFO  L87              Difference]: Start difference. First operand 44 states. Second operand 5 states.
[2020-09-24 18:11:37,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:11:37,321 INFO  L93              Difference]: Finished difference Result 88 states and 110 transitions.
[2020-09-24 18:11:37,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 18:11:37,324 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 24
[2020-09-24 18:11:37,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:11:37,341 INFO  L225             Difference]: With dead ends: 88
[2020-09-24 18:11:37,341 INFO  L226             Difference]: Without dead ends: 45
[2020-09-24 18:11:37,350 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 18:11:37,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2020-09-24 18:11:37,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2020-09-24 18:11:37,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-09-24 18:11:37,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions.
[2020-09-24 18:11:37,414 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24
[2020-09-24 18:11:37,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:11:37,415 INFO  L479      AbstractCegarLoop]: Abstraction has 45 states and 52 transitions.
[2020-09-24 18:11:37,415 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:11:37,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions.
[2020-09-24 18:11:37,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-24 18:11:37,419 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:11:37,419 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, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:11:37,420 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:11:37,420 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:11:37,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:11:37,421 INFO  L82        PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times
[2020-09-24 18:11:37,421 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:11:37,422 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62068455]
[2020-09-24 18:11:37,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:11:37,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:37,456 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,497 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,851 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:37,852 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 18:11:37,852 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:11:37,852 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 409
[2020-09-24 18:11:37,853 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:37,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:11:37,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 18:11:37,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 24
[2020-09-24 18:11:37,855 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 18:11:37,876 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:11:37,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:37,879 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,880 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:37,880 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:11:37,881 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:37,881 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:11:37,881 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:37,881 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:37,894 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:37,895 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:37,895 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 13
[2020-09-24 18:11:37,897 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:11:37,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:37,908 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,946 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:37,947 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:11:37,947 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:37,947 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 42
[2020-09-24 18:11:37,947 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:37,948 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:11:37,948 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:37,948 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 21
[2020-09-24 18:11:37,948 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:37,969 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:37,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:37,975 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:37,987 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:37,988 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:37,988 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:37,988 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 18:11:37,988 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:37,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:11:37,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:37,989 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:11:37,989 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:38,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-24 18:11:38,003 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62068455]
[2020-09-24 18:11:38,003 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:11:38,004 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:11:38,007 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140704727]
[2020-09-24 18:11:38,009 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:11:38,009 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:11:38,010 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:11:38,010 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:11:38,010 INFO  L87              Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states.
[2020-09-24 18:11:38,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:11:38,129 INFO  L93              Difference]: Finished difference Result 83 states and 108 transitions.
[2020-09-24 18:11:38,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 18:11:38,130 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 34
[2020-09-24 18:11:38,131 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:11:38,133 INFO  L225             Difference]: With dead ends: 83
[2020-09-24 18:11:38,133 INFO  L226             Difference]: Without dead ends: 47
[2020-09-24 18:11:38,136 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:11:38,136 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-09-24 18:11:38,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2020-09-24 18:11:38,145 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-24 18:11:38,155 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions.
[2020-09-24 18:11:38,156 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 34
[2020-09-24 18:11:38,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:11:38,158 INFO  L479      AbstractCegarLoop]: Abstraction has 47 states and 56 transitions.
[2020-09-24 18:11:38,158 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:11:38,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions.
[2020-09-24 18:11:38,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-09-24 18:11:38,161 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:11:38,162 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:11:38,162 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:11:38,162 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:11:38,163 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:11:38,165 INFO  L82        PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times
[2020-09-24 18:11:38,165 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:11:38,165 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396078916]
[2020-09-24 18:11:38,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:11:38,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:38,196 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:38,227 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:38,261 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:41,469 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:41,469 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 68
[2020-09-24 18:11:41,470 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 18:11:41,470 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3285
[2020-09-24 18:11:41,470 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:41,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:11:41,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 18:11:41,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-09-24 18:11:41,472 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:41,505 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:11:41,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:41,508 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:41,510 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:41,510 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:11:41,510 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:41,511 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 18:11:41,511 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:41,511 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:41,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:41,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:41,512 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:41,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:11:41,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:41,542 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:41,577 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:42,054 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:42,054 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-24 18:11:42,055 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:11:42,055 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 523
[2020-09-24 18:11:42,055 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:42,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:11:42,056 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:42,056 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-09-24 18:11:42,056 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:42,099 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:42,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:42,110 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:42,129 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:42,129 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:11:42,129 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:42,129 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-24 18:11:42,130 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:42,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:11:42,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:42,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 18:11:42,131 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:42,137 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:42,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:42,144 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:42,148 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:42,149 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:42,153 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:42,153 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 18:11:42,154 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:42,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:42,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:42,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:42,154 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:42,157 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 18:11:42,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:42,163 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:42,186 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:42,187 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:42,187 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:42,187 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-09-24 18:11:42,187 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:42,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 18:11:42,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:42,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:11:42,198 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 10
[2020-09-24 18:11:42,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2020-09-24 18:11:42,241 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396078916]
[2020-09-24 18:11:42,241 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:11:42,241 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:11:42,242 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729386259]
[2020-09-24 18:11:42,244 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:11:42,245 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:11:42,245 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:11:42,246 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:11:42,246 INFO  L87              Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states.
[2020-09-24 18:11:42,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:11:42,440 INFO  L93              Difference]: Finished difference Result 72 states and 94 transitions.
[2020-09-24 18:11:42,441 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 18:11:42,441 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 53
[2020-09-24 18:11:42,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:11:42,454 INFO  L225             Difference]: With dead ends: 72
[2020-09-24 18:11:42,454 INFO  L226             Difference]: Without dead ends: 66
[2020-09-24 18:11:42,455 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2020-09-24 18:11:42,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2020-09-24 18:11:42,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2020-09-24 18:11:42,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-09-24 18:11:42,483 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions.
[2020-09-24 18:11:42,488 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 53
[2020-09-24 18:11:42,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:11:42,490 INFO  L479      AbstractCegarLoop]: Abstraction has 66 states and 88 transitions.
[2020-09-24 18:11:42,490 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:11:42,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions.
[2020-09-24 18:11:42,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2020-09-24 18:11:42,501 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:11:42,504 INFO  L422         BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:11:42,504 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:11:42,505 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:11:42,505 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:11:42,505 INFO  L82        PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 2 times
[2020-09-24 18:11:42,506 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:11:42,508 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043244638]
[2020-09-24 18:11:42,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:11:42,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:42,570 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:42,615 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:46,172 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:46,172 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 115
[2020-09-24 18:11:46,173 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:11:46,173 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3625
[2020-09-24 18:11:46,173 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:46,173 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:11:46,173 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 18:11:46,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 94
[2020-09-24 18:11:46,174 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:46,199 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:11:46,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:46,201 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:46,203 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:46,203 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:11:46,203 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:46,203 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:11:46,203 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:46,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:46,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:46,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:46,204 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:46,205 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:11:46,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:46,231 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:46,259 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:48,975 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:48,975 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-09-24 18:11:48,975 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:11:48,976 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2756
[2020-09-24 18:11:48,976 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:48,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:11:48,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:48,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 91
[2020-09-24 18:11:48,977 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:49,017 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:49,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,034 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,120 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,120 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:11:49,120 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,121 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 93
[2020-09-24 18:11:49,121 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 18:11:49,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-09-24 18:11:49,123 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:49,153 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:49,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,168 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,203 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,204 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-24 18:11:49,205 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,205 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-09-24 18:11:49,206 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,206 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:11:49,206 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 43
[2020-09-24 18:11:49,207 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:49,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:49,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,219 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,227 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,227 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:11:49,228 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,228 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:11:49,229 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:49,230 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,230 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:49,231 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:49,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:49,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,237 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,241 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:49,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,243 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 18:11:49,244 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:49,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,245 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:49,245 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:49,250 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 18:11:49,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,256 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,261 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,262 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:49,262 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,262 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 18:11:49,262 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,263 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:49,263 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,263 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:49,263 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:49,285 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-09-24 18:11:49,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,307 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,307 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:11:49,308 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,308 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 18:11:49,308 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:11:49,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 18:11:49,309 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:49,312 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:49,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,314 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,318 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:49,319 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:11:49,319 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:49,319 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 18:11:49,319 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:49,320 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:49,320 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:49,320 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:49,320 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:49,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 172 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2020-09-24 18:11:49,341 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043244638]
[2020-09-24 18:11:49,341 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:11:49,342 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:11:49,342 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418768799]
[2020-09-24 18:11:49,344 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:11:49,345 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:11:49,345 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:11:49,349 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:11:49,349 INFO  L87              Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 7 states.
[2020-09-24 18:11:49,518 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:11:49,518 INFO  L93              Difference]: Finished difference Result 111 states and 163 transitions.
[2020-09-24 18:11:49,518 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 18:11:49,519 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 92
[2020-09-24 18:11:49,519 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:11:49,524 INFO  L225             Difference]: With dead ends: 111
[2020-09-24 18:11:49,524 INFO  L226             Difference]: Without dead ends: 105
[2020-09-24 18:11:49,528 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2020-09-24 18:11:49,529 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2020-09-24 18:11:49,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101.
[2020-09-24 18:11:49,552 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2020-09-24 18:11:49,554 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions.
[2020-09-24 18:11:49,555 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 92
[2020-09-24 18:11:49,555 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:11:49,555 INFO  L479      AbstractCegarLoop]: Abstraction has 101 states and 153 transitions.
[2020-09-24 18:11:49,556 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:11:49,556 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions.
[2020-09-24 18:11:49,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2020-09-24 18:11:49,559 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:11:49,560 INFO  L422         BasicCegarLoop]: trace histogram [17, 17, 17, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:11:49,560 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:11:49,560 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:11:49,560 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:11:49,561 INFO  L82        PathProgramCache]: Analyzing trace with hash -1454565455, now seen corresponding path program 3 times
[2020-09-24 18:11:49,561 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:11:49,561 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850843270]
[2020-09-24 18:11:49,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:11:49,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:49,616 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,685 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,801 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:49,888 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:54,602 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:54,602 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 220
[2020-09-24 18:11:54,603 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:11:54,603 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5007
[2020-09-24 18:11:54,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:54,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-24 18:11:54,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 34
[2020-09-24 18:11:54,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-09-24 18:11:54,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:54,642 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:11:54,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:54,643 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:54,650 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:54,650 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:11:54,650 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:11:54,651 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 18:11:54,651 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:54,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:11:54,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:11:54,653 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:11:54,653 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:11:54,654 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:11:54,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:54,703 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:54,773 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:54,883 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:54,955 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:59,691 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:11:59,691 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 199
[2020-09-24 18:11:59,692 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:11:59,692 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5008
[2020-09-24 18:11:59,692 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:11:59,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-24 18:11:59,692 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-24 18:11:59,693 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-09-24 18:11:59,693 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:11:59,711 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:11:59,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:11:59,739 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:59,808 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:11:59,891 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:00,133 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:00,193 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:00,826 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:04,727 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:04,727 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 129
[2020-09-24 18:12:04,727 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:12:04,727 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-24 18:12:04,728 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:04,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 18:12:04,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 18:12:04,729 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-09-24 18:12:04,729 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:04,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:04,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:04,775 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:04,802 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:05,470 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:05,470 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:12:05,470 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:12:05,470 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 702
[2020-09-24 18:12:05,471 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:05,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 18:12:05,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:05,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-09-24 18:12:05,471 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:05,508 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:05,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:05,521 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:05,553 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:05,918 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:05,918 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-24 18:12:05,919 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:12:05,919 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 403
[2020-09-24 18:12:05,919 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:05,919 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 18:12:05,919 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:05,920 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-09-24 18:12:05,920 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:05,951 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:05,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:05,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:05,971 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:05,971 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:12:05,972 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:05,972 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 18:12:05,972 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:05,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:12:05,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:05,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 18:12:05,973 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:05,977 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:05,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:05,979 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:05,982 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:05,982 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:05,982 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:05,983 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 18:12:05,983 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:05,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:05,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:05,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:05,983 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:05,985 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 18:12:05,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:05,988 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:06,006 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:06,006 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:06,006 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:06,007 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-24 18:12:06,007 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:06,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 18:12:06,007 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:06,008 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:12:06,008 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:06,039 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-09-24 18:12:06,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:06,053 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:06,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:06,101 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:06,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,178 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,178 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:12:07,179 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:12:07,179 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1131
[2020-09-24 18:12:07,179 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,179 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:12:07,179 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 18:12:07,180 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-09-24 18:12:07,180 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:07,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:07,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,227 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,246 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,259 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,342 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,716 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,716 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 494
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-09-24 18:12:07,717 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:07,800 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:07,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,807 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,823 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,823 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:12:07,823 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,824 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-24 18:12:07,824 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:12:07,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 18:12:07,825 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:07,829 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:07,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,831 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,835 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,835 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:07,836 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,836 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 18:12:07,836 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,836 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:07,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:07,837 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:07,840 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 18:12:07,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,844 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,852 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,852 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:07,852 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,853 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:12:07,853 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:12:07,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:12:07,854 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:07,876 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2020-09-24 18:12:07,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,888 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,905 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,906 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:12:07,906 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,906 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-24 18:12:07,907 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,907 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:07,907 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 56
[2020-09-24 18:12:07,908 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:07,908 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:07,914 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:07,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,919 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,926 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,926 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-24 18:12:07,926 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,927 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:12:07,927 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:07,927 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,928 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:07,928 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:07,934 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:07,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,937 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,945 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,945 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:12:07,945 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,946 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 18:12:07,946 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,946 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:07,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:07,947 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:07,951 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:07,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,953 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,957 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,957 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:07,957 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,957 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 18:12:07,958 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:07,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,958 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:07,959 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:07,961 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 18:12:07,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:07,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:07,967 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:07,968 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:07,968 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:07,968 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 18:12:07,968 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:07,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:07,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:07,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:07,970 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:12:08,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 880 backedges. 165 proven. 277 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked.
[2020-09-24 18:12:08,035 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850843270]
[2020-09-24 18:12:08,035 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:12:08,036 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 18:12:08,036 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348783577]
[2020-09-24 18:12:08,037 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 18:12:08,037 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:12:08,037 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 18:12:08,037 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2020-09-24 18:12:08,038 INFO  L87              Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 10 states.
[2020-09-24 18:12:08,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:12:08,372 INFO  L93              Difference]: Finished difference Result 205 states and 367 transitions.
[2020-09-24 18:12:08,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 18:12:08,374 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 179
[2020-09-24 18:12:08,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:12:08,383 INFO  L225             Difference]: With dead ends: 205
[2020-09-24 18:12:08,383 INFO  L226             Difference]: Without dead ends: 117
[2020-09-24 18:12:08,385 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2020-09-24 18:12:08,386 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2020-09-24 18:12:08,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117.
[2020-09-24 18:12:08,414 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 117 states.
[2020-09-24 18:12:08,420 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions.
[2020-09-24 18:12:08,422 INFO  L78                 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 179
[2020-09-24 18:12:08,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:12:08,423 INFO  L479      AbstractCegarLoop]: Abstraction has 117 states and 161 transitions.
[2020-09-24 18:12:08,423 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 18:12:08,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions.
[2020-09-24 18:12:08,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2020-09-24 18:12:08,425 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:12:08,425 INFO  L422         BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:12:08,428 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:12:08,428 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:12:08,429 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:12:08,429 INFO  L82        PathProgramCache]: Analyzing trace with hash -1778048969, now seen corresponding path program 4 times
[2020-09-24 18:12:08,429 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:12:08,429 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490232541]
[2020-09-24 18:12:08,429 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:12:08,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:08,473 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:08,520 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:13,461 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:13,461 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 150
[2020-09-24 18:12:13,461 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:12:13,461 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5008
[2020-09-24 18:12:13,461 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:13,462 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 18:12:13,462 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 98
[2020-09-24 18:12:13,462 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-09-24 18:12:13,462 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:13,479 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:12:13,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:13,480 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:13,481 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:13,481 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:12:13,481 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:13,481 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 18:12:13,482 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:13,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:13,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:13,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:13,482 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:13,483 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:12:13,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:13,514 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:13,565 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:18,340 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:18,340 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 129
[2020-09-24 18:12:18,340 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:12:18,340 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4841
[2020-09-24 18:12:18,340 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:18,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-24 18:12:18,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 79
[2020-09-24 18:12:18,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-09-24 18:12:18,341 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:18,364 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:18,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:18,386 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:18,416 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,409 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,409 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-09-24 18:12:21,409 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:12:21,409 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3034
[2020-09-24 18:12:21,409 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 18:12:21,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 89
[2020-09-24 18:12:21,410 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,432 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:21,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,438 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,450 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,451 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:12:21,451 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,451 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-24 18:12:21,451 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,451 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:21,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:21,452 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,456 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:21,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,460 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,470 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,470 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-24 18:12:21,470 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,470 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 18:12:21,471 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:21,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,471 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:21,471 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,475 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:21,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,478 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,483 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,483 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:21,484 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,486 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:21,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,488 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,491 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,491 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:21,491 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,492 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 18:12:21,492 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:21,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,492 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:21,492 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,494 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 18:12:21,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,495 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,498 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,498 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:21,498 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,499 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 18:12:21,499 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:21,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:21,500 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,503 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-09-24 18:12:21,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,509 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,541 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,541 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:12:21,541 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,541 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-09-24 18:12:21,542 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 18:12:21,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-24 18:12:21,542 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,554 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:21,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,557 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,561 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,561 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:21,561 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,562 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 18:12:21,562 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 18:12:21,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,562 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:12:21,562 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,593 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2020-09-24 18:12:21,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,599 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,623 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,623 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 18:12:21,623 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,624 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-24 18:12:21,624 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:12:21,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 4
[2020-09-24 18:12:21,624 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-24 18:12:21,625 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,657 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 18:12:21,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:21,660 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:21,665 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:21,665 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 18:12:21,666 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:21,666 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 18:12:21,666 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:21,666 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:12:21,666 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:21,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:12:21,667 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:21,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 347 backedges. 117 proven. 23 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked.
[2020-09-24 18:12:21,687 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490232541]
[2020-09-24 18:12:21,687 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:12:21,687 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 18:12:21,688 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749781127]
[2020-09-24 18:12:21,688 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 18:12:21,688 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:12:21,689 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 18:12:21,689 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2020-09-24 18:12:21,689 INFO  L87              Difference]: Start difference. First operand 117 states and 161 transitions. Second operand 10 states.
[2020-09-24 18:12:22,167 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:12:22,167 INFO  L93              Difference]: Finished difference Result 278 states and 447 transitions.
[2020-09-24 18:12:22,168 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 18:12:22,168 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 121
[2020-09-24 18:12:22,169 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:12:22,172 INFO  L225             Difference]: With dead ends: 278
[2020-09-24 18:12:22,172 INFO  L226             Difference]: Without dead ends: 177
[2020-09-24 18:12:22,174 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462
[2020-09-24 18:12:22,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2020-09-24 18:12:22,197 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154.
[2020-09-24 18:12:22,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 154 states.
[2020-09-24 18:12:22,200 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 239 transitions.
[2020-09-24 18:12:22,200 INFO  L78                 Accepts]: Start accepts. Automaton has 154 states and 239 transitions. Word has length 121
[2020-09-24 18:12:22,200 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:12:22,201 INFO  L479      AbstractCegarLoop]: Abstraction has 154 states and 239 transitions.
[2020-09-24 18:12:22,201 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 18:12:22,201 INFO  L276                IsEmpty]: Start isEmpty. Operand 154 states and 239 transitions.
[2020-09-24 18:12:22,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2020-09-24 18:12:22,204 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:12:22,204 INFO  L422         BasicCegarLoop]: trace histogram [13, 13, 13, 8, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1]
[2020-09-24 18:12:22,204 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 18:12:22,204 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:12:22,204 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:12:22,205 INFO  L82        PathProgramCache]: Analyzing trace with hash 456662988, now seen corresponding path program 5 times
[2020-09-24 18:12:22,205 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:12:22,205 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291068461]
[2020-09-24 18:12:22,205 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:12:22,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:22,251 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:22,303 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:27,230 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:27,231 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 18:12:27,231 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:12:27,231 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-24 18:12:27,231 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:27,232 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 18:12:27,232 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 98
[2020-09-24 18:12:27,232 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-09-24 18:12:27,232 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:27,254 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:12:27,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:27,255 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:27,256 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:12:27,256 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:12:27,256 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:12:27,256 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 18:12:27,256 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:12:27,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:12:27,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:12:27,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:12:27,257 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:12:27,258 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-24 18:12:27,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:12:27,285 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:12:27,329 FATAL L256   erpolLogProxyWrapper]: Now shrinking...