/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:36:50,374 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:36:50,378 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:36:50,403 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:36:50,404 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:36:50,405 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:36:50,407 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 20:36:50,409 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 20:36:50,411 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:36:50,412 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 20:36:50,419 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:36:50,420 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:36:50,424 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:36:50,425 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:36:50,427 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:36:50,430 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:36:50,434 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:36:50,437 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:36:50,438 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:36:50,442 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:36:50,443 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:36:50,445 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:36:50,452 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:36:50,452 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:36:50,453 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:36:50,457 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:36:50,458 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:36:50,460 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:36:50,460 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:36:50,461 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:36:50,462 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:36:50,463 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:36:50,474 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:36:50,475 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:36:50,476 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-09-24 20:36:50,480 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 20:36:50,482 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:36:50,487 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 20:36:50,531 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:36:50,531 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:36:50,533 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:36:50,534 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:36:50,534 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:36:50,534 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:36:50,535 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:36:50,535 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:36:50,535 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:36:50,535 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:36:50,536 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:36:50,537 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:36:50,537 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:36:50,537 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:36:50,538 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:36:50,538 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:36:50,538 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:36:50,538 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:36:50,539 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:36:50,539 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:36:50,539 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:36:50,539 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:36:50,539 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:36:50,540 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:36:50,540 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:36:50,540 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:36:50,540 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:36:50,540 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:36:50,541 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:36:50,541 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;
[2020-09-24 20:36:51,046 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:36:51,064 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:36:51,069 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:36:51,070 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:36:51,071 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:36:51,072 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c
[2020-09-24 20:36:51,155 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607ba4de9/7889f63b46e049f3abf8aa864a4f2a36/FLAGaced5949d
[2020-09-24 20:36:51,812 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:36:51,813 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c
[2020-09-24 20:36:51,831 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607ba4de9/7889f63b46e049f3abf8aa864a4f2a36/FLAGaced5949d
[2020-09-24 20:36:52,044 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607ba4de9/7889f63b46e049f3abf8aa864a4f2a36
[2020-09-24 20:36:52,057 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:36:52,062 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:36:52,063 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:36:52,063 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:36:52,068 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:36:52,069 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,075 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52, skipping insertion in model container
[2020-09-24 20:36:52,075 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,086 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:36:52,141 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:36:52,720 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:36:52,726 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:36:52,852 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:36:52,872 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:36:52,873 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52 WrapperNode
[2020-09-24 20:36:52,873 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:36:52,874 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:36:52,874 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:36:52,875 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:36:52,894 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,894 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,913 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,914 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,956 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,975 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:52,996 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (1/1) ...
[2020-09-24 20:36:53,015 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:36:53,016 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:36:53,016 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:36:53,016 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:36:53,019 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (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 20:36:53,096 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:36:53,096 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:36:53,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 20:36:53,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:36:53,097 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 20:36:53,097 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:36:53,097 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 20:36:53,097 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 20:36:53,098 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:36:53,098 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:36:53,098 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:36:54,621 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:36:54,621 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 20:36:54,630 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:36:54 BoogieIcfgContainer
[2020-09-24 20:36:54,630 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:36:54,631 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:36:54,632 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:36:54,635 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:36:54,636 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:36:52" (1/3) ...
[2020-09-24 20:36:54,637 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:36:54, skipping insertion in model container
[2020-09-24 20:36:54,637 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:36:52" (2/3) ...
[2020-09-24 20:36:54,638 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:36:54, skipping insertion in model container
[2020-09-24 20:36:54,638 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:36:54" (3/3) ...
[2020-09-24 20:36:54,643 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label19.c
[2020-09-24 20:36:54,655 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:36:54,670 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:36:54,693 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:36:54,737 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:36:54,737 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:36:54,738 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:36:54,738 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:36:54,738 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:36:54,738 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:36:54,738 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:36:54,739 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:36:54,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 456 states.
[2020-09-24 20:36:54,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-24 20:36:54,781 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:36:54,782 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, 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 20:36:54,783 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:36:54,791 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:36:54,791 INFO  L82        PathProgramCache]: Analyzing trace with hash -1688264769, now seen corresponding path program 1 times
[2020-09-24 20:36:54,803 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:36:54,803 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634]
[2020-09-24 20:36:54,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:36:54,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:36:55,026 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:55,247 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:55,461 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:36:55,462 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-24 20:36:55,462 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:36:55,462 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 478
[2020-09-24 20:36:55,465 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:36:55,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 20:36:55,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 20:36:55,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-09-24 20:36:55,467 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 20:36:55,572 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:36:55,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:36:55,584 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:55,603 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:36:55,603 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 20:36:55,604 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:36:55,604 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-24 20:36:55,604 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:36:55,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:36:55,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:36:55,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 20:36:55,606 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:36:55,635 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 20:36:55,636 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634]
[2020-09-24 20:36:55,638 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:36:55,638 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 20:36:55,639 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583084218]
[2020-09-24 20:36:55,646 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 20:36:55,646 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:36:55,663 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 20:36:55,664 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 20:36:55,667 INFO  L87              Difference]: Start difference. First operand 456 states. Second operand 4 states.
[2020-09-24 20:36:57,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:36:57,690 INFO  L93              Difference]: Finished difference Result 1069 states and 1495 transitions.
[2020-09-24 20:36:57,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 20:36:57,694 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 48
[2020-09-24 20:36:57,696 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:36:57,735 INFO  L225             Difference]: With dead ends: 1069
[2020-09-24 20:36:57,736 INFO  L226             Difference]: Without dead ends: 555
[2020-09-24 20:36:57,747 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 20:36:57,769 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 555 states.
[2020-09-24 20:36:57,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543.
[2020-09-24 20:36:57,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 543 states.
[2020-09-24 20:36:57,841 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions.
[2020-09-24 20:36:57,843 INFO  L78                 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 48
[2020-09-24 20:36:57,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:36:57,844 INFO  L479      AbstractCegarLoop]: Abstraction has 543 states and 670 transitions.
[2020-09-24 20:36:57,844 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 20:36:57,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions.
[2020-09-24 20:36:57,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2020-09-24 20:36:57,852 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:36:57,852 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:57,852 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:36:57,853 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:36:57,853 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:36:57,853 INFO  L82        PathProgramCache]: Analyzing trace with hash -1595093336, now seen corresponding path program 1 times
[2020-09-24 20:36:57,854 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:36:57,854 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601315518]
[2020-09-24 20:36:57,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:36:57,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:36:57,924 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:58,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:58,465 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:58,566 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:58,982 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:59,711 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:36:59,888 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:36:59,888 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 139
[2020-09-24 20:36:59,888 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 20:36:59,889 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1993
[2020-09-24 20:36:59,889 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:36:59,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 20:36:59,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 20:36:59,890 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 126
[2020-09-24 20:36:59,890 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:36:59,999 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:37:00,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:00,008 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:00,025 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:00,025 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 20:37:00,025 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:00,026 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-24 20:37:00,026 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:00,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:37:00,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:37:00,027 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 20:37:00,027 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:00,046 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 20:37:00,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:00,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:00,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:00,273 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:00,273 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 20:37:00,273 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:37:00,273 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 208
[2020-09-24 20:37:00,274 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:00,274 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 20:37:00,274 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:37:00,274 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 20:37:00,275 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:00,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:37:00,532 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601315518]
[2020-09-24 20:37:00,532 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:37:00,532 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 20:37:00,533 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157934323]
[2020-09-24 20:37:00,535 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 20:37:00,535 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:37:00,535 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 20:37:00,536 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-09-24 20:37:00,536 INFO  L87              Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states.
[2020-09-24 20:37:03,780 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:37:03,780 INFO  L93              Difference]: Finished difference Result 798 states and 1026 transitions.
[2020-09-24 20:37:03,781 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-24 20:37:03,781 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 128
[2020-09-24 20:37:03,782 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:37:03,787 INFO  L225             Difference]: With dead ends: 798
[2020-09-24 20:37:03,787 INFO  L226             Difference]: Without dead ends: 796
[2020-09-24 20:37:03,789 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182
[2020-09-24 20:37:03,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 796 states.
[2020-09-24 20:37:03,831 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 697.
[2020-09-24 20:37:03,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 697 states.
[2020-09-24 20:37:03,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 905 transitions.
[2020-09-24 20:37:03,836 INFO  L78                 Accepts]: Start accepts. Automaton has 697 states and 905 transitions. Word has length 128
[2020-09-24 20:37:03,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:37:03,837 INFO  L479      AbstractCegarLoop]: Abstraction has 697 states and 905 transitions.
[2020-09-24 20:37:03,837 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 20:37:03,837 INFO  L276                IsEmpty]: Start isEmpty. Operand 697 states and 905 transitions.
[2020-09-24 20:37:03,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2020-09-24 20:37:03,842 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:37:03,842 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:03,842 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:37:03,843 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:37:03,843 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:37:03,843 INFO  L82        PathProgramCache]: Analyzing trace with hash -1780229195, now seen corresponding path program 1 times
[2020-09-24 20:37:03,843 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:37:03,844 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073252063]
[2020-09-24 20:37:03,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:37:03,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:03,906 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:04,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:05,139 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:05,139 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 150
[2020-09-24 20:37:05,140 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:37:05,140 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1259
[2020-09-24 20:37:05,140 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:05,140 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 20:37:05,141 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 20:37:05,141 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 93
[2020-09-24 20:37:05,141 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:05,218 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:37:05,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:05,224 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:05,238 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:05,239 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 20:37:05,239 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:05,240 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 20:37:05,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:05,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:37:05,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:37:05,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 20:37:05,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 20:37:05,259 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 20:37:05,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:05,301 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:05,433 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:05,434 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 87
[2020-09-24 20:37:05,434 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:05,434 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 149
[2020-09-24 20:37:05,434 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:05,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 20:37:05,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:37:05,435 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-09-24 20:37:05,435 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:37:05,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:37:05,517 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073252063]
[2020-09-24 20:37:05,517 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:37:05,517 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-24 20:37:05,517 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255699620]
[2020-09-24 20:37:05,518 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 20:37:05,518 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:37:05,519 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 20:37:05,519 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 20:37:05,519 INFO  L87              Difference]: Start difference. First operand 697 states and 905 transitions. Second operand 7 states.
[2020-09-24 20:37:07,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:37:07,853 INFO  L93              Difference]: Finished difference Result 1921 states and 2627 transitions.
[2020-09-24 20:37:07,853 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 20:37:07,853 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 139
[2020-09-24 20:37:07,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:37:07,862 INFO  L225             Difference]: With dead ends: 1921
[2020-09-24 20:37:07,862 INFO  L226             Difference]: Without dead ends: 1239
[2020-09-24 20:37:07,866 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-09-24 20:37:07,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1239 states.
[2020-09-24 20:37:07,944 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1173.
[2020-09-24 20:37:07,944 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1173 states.
[2020-09-24 20:37:07,954 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1460 transitions.
[2020-09-24 20:37:07,955 INFO  L78                 Accepts]: Start accepts. Automaton has 1173 states and 1460 transitions. Word has length 139
[2020-09-24 20:37:07,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:37:07,957 INFO  L479      AbstractCegarLoop]: Abstraction has 1173 states and 1460 transitions.
[2020-09-24 20:37:07,957 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 20:37:07,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 1173 states and 1460 transitions.
[2020-09-24 20:37:07,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2020-09-24 20:37:07,973 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:37:07,974 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:07,974 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 20:37:07,974 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:37:07,975 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:37:07,975 INFO  L82        PathProgramCache]: Analyzing trace with hash -198517872, now seen corresponding path program 1 times
[2020-09-24 20:37:07,975 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:37:07,976 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323383967]
[2020-09-24 20:37:07,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:37:08,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:08,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:08,156 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:08,534 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:10,246 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:11,421 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:13,050 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:13,050 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 186
[2020-09-24 20:37:13,050 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 20:37:13,051 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-09-24 20:37:13,051 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:13,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 20:37:13,051 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-24 20:37:13,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 162
[2020-09-24 20:37:13,052 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:37:13,179 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:37:13,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:13,186 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:13,208 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:13,208 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 20:37:13,208 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:13,209 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-24 20:37:13,209 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:13,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 20:37:13,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:37:13,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 20:37:13,210 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:13,236 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 20:37:13,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:13,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:13,529 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:13,851 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:13,851 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 123
[2020-09-24 20:37:13,851 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:37:13,851 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 576
[2020-09-24 20:37:13,852 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:13,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 20:37:13,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:37:13,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 119
[2020-09-24 20:37:13,853 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:37:14,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:37:14,039 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323383967]
[2020-09-24 20:37:14,039 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:37:14,040 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 20:37:14,040 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825607860]
[2020-09-24 20:37:14,041 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 20:37:14,041 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:37:14,041 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 20:37:14,041 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-09-24 20:37:14,042 INFO  L87              Difference]: Start difference. First operand 1173 states and 1460 transitions. Second operand 10 states.
[2020-09-24 20:37:16,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:37:16,060 INFO  L93              Difference]: Finished difference Result 2371 states and 2961 transitions.
[2020-09-24 20:37:16,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 20:37:16,061 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 175
[2020-09-24 20:37:16,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:37:16,071 INFO  L225             Difference]: With dead ends: 2371
[2020-09-24 20:37:16,071 INFO  L226             Difference]: Without dead ends: 1175
[2020-09-24 20:37:16,078 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182
[2020-09-24 20:37:16,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1175 states.
[2020-09-24 20:37:16,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1163.
[2020-09-24 20:37:16,126 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1163 states.
[2020-09-24 20:37:16,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1442 transitions.
[2020-09-24 20:37:16,136 INFO  L78                 Accepts]: Start accepts. Automaton has 1163 states and 1442 transitions. Word has length 175
[2020-09-24 20:37:16,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:37:16,137 INFO  L479      AbstractCegarLoop]: Abstraction has 1163 states and 1442 transitions.
[2020-09-24 20:37:16,137 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 20:37:16,137 INFO  L276                IsEmpty]: Start isEmpty. Operand 1163 states and 1442 transitions.
[2020-09-24 20:37:16,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2020-09-24 20:37:16,144 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:37:16,145 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:37:16,145 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 20:37:16,146 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:37:16,146 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:37:16,146 INFO  L82        PathProgramCache]: Analyzing trace with hash -1477023067, now seen corresponding path program 1 times
[2020-09-24 20:37:16,147 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:37:16,147 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845309029]
[2020-09-24 20:37:16,148 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:37:16,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:16,262 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:16,364 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:16,647 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:18,307 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:20,914 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:20,914 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 231
[2020-09-24 20:37:20,915 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 20:37:20,915 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4705
[2020-09-24 20:37:20,915 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:20,915 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 20:37:20,915 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 20:37:20,916 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 176
[2020-09-24 20:37:20,916 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:37:20,987 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:37:20,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:20,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:21,011 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:21,011 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 20:37:21,011 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:21,012 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-24 20:37:21,012 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:21,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:37:21,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:37:21,013 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 20:37:21,013 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:37:21,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 20:37:21,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:21,069 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:21,183 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:21,190 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 20:37:21,190 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:21,191 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 130
[2020-09-24 20:37:21,191 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:21,191 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 20:37:21,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:37:21,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 20:37:21,192 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:21,263 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 20:37:21,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:21,309 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:21,483 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:21,489 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 87
[2020-09-24 20:37:21,489 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:21,489 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 192
[2020-09-24 20:37:21,490 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:21,490 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 20:37:21,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:37:21,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-09-24 20:37:21,495 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 20:37:21,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2020-09-24 20:37:21,659 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845309029]
[2020-09-24 20:37:21,659 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:37:21,659 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-24 20:37:21,660 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162287125]
[2020-09-24 20:37:21,661 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 20:37:21,661 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:37:21,661 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 20:37:21,662 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-09-24 20:37:21,662 INFO  L87              Difference]: Start difference. First operand 1163 states and 1442 transitions. Second operand 9 states.
[2020-09-24 20:37:24,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:37:24,978 INFO  L93              Difference]: Finished difference Result 3991 states and 5443 transitions.
[2020-09-24 20:37:24,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-09-24 20:37:24,979 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 218
[2020-09-24 20:37:24,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:37:25,002 INFO  L225             Difference]: With dead ends: 3991
[2020-09-24 20:37:25,003 INFO  L226             Difference]: Without dead ends: 2843
[2020-09-24 20:37:25,010 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342
[2020-09-24 20:37:25,013 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2843 states.
[2020-09-24 20:37:25,110 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2620.
[2020-09-24 20:37:25,111 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2620 states.
[2020-09-24 20:37:25,122 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3289 transitions.
[2020-09-24 20:37:25,122 INFO  L78                 Accepts]: Start accepts. Automaton has 2620 states and 3289 transitions. Word has length 218
[2020-09-24 20:37:25,123 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:37:25,123 INFO  L479      AbstractCegarLoop]: Abstraction has 2620 states and 3289 transitions.
[2020-09-24 20:37:25,123 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 20:37:25,123 INFO  L276                IsEmpty]: Start isEmpty. Operand 2620 states and 3289 transitions.
[2020-09-24 20:37:25,128 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2020-09-24 20:37:25,129 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:37:25,129 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:37:25,129 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 20:37:25,130 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:37:25,130 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:37:25,130 INFO  L82        PathProgramCache]: Analyzing trace with hash 476320730, now seen corresponding path program 1 times
[2020-09-24 20:37:25,130 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:37:25,131 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433778399]
[2020-09-24 20:37:25,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:37:25,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:25,193 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:25,287 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:26,620 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:30,164 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:30,165 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 238
[2020-09-24 20:37:30,165 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 20:37:30,166 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-24 20:37:30,166 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:30,166 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 20:37:30,167 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 20:37:30,167 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 91
[2020-09-24 20:37:30,167 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:30,239 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:37:30,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:30,246 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:30,261 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:30,261 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 20:37:30,262 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:30,262 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-24 20:37:30,263 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:30,263 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:37:30,263 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:37:30,264 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 20:37:30,264 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:30,289 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 20:37:30,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:30,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:30,488 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:30,489 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 20:37:30,489 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:30,489 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 176
[2020-09-24 20:37:30,490 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:30,490 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 20:37:30,490 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:37:30,491 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 81
[2020-09-24 20:37:30,491 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:30,591 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2020-09-24 20:37:30,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:30,630 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:30,685 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:37:30,686 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 87
[2020-09-24 20:37:30,686 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:37:30,687 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 73
[2020-09-24 20:37:30,687 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:37:30,687 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:37:30,688 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 84
[2020-09-24 20:37:30,688 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:37:30,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:37:30,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 147 backedges. 64 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2020-09-24 20:37:30,825 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433778399]
[2020-09-24 20:37:30,825 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:37:30,826 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 20:37:30,826 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865741159]
[2020-09-24 20:37:30,827 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 20:37:30,827 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:37:30,828 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 20:37:30,828 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 20:37:30,828 INFO  L87              Difference]: Start difference. First operand 2620 states and 3289 transitions. Second operand 7 states.
[2020-09-24 20:37:33,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:37:33,169 INFO  L93              Difference]: Finished difference Result 5098 states and 6462 transitions.
[2020-09-24 20:37:33,171 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-09-24 20:37:33,171 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 225
[2020-09-24 20:37:33,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:37:33,184 INFO  L225             Difference]: With dead ends: 5098
[2020-09-24 20:37:33,184 INFO  L226             Difference]: Without dead ends: 2643
[2020-09-24 20:37:33,191 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2020-09-24 20:37:33,194 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2643 states.
[2020-09-24 20:37:33,262 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2628.
[2020-09-24 20:37:33,262 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2628 states.
[2020-09-24 20:37:33,270 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3315 transitions.
[2020-09-24 20:37:33,271 INFO  L78                 Accepts]: Start accepts. Automaton has 2628 states and 3315 transitions. Word has length 225
[2020-09-24 20:37:33,271 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:37:33,271 INFO  L479      AbstractCegarLoop]: Abstraction has 2628 states and 3315 transitions.
[2020-09-24 20:37:33,271 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 20:37:33,272 INFO  L276                IsEmpty]: Start isEmpty. Operand 2628 states and 3315 transitions.
[2020-09-24 20:37:33,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2020-09-24 20:37:33,276 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:37:33,277 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:37:33,277 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 20:37:33,277 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:37:33,277 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:37:33,278 INFO  L82        PathProgramCache]: Analyzing trace with hash -838036601, now seen corresponding path program 1 times
[2020-09-24 20:37:33,278 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:37:33,278 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32370891]
[2020-09-24 20:37:33,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:37:33,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:37:33,361 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:33,437 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:33,574 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:33,699 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:37:34,473 FATAL L256   erpolLogProxyWrapper]: Now shrinking...