/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/eca-rers2012/Problem10_label13.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:24:23,281 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:24:23,285 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:24:23,333 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:24:23,334 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:24:23,345 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:24:23,347 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 18:24:23,359 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:24:23,362 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:24:23,365 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:24:23,366 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:24:23,368 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:24:23,369 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:24:23,370 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:24:23,378 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:24:23,379 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:24:23,382 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:24:23,383 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:24:23,384 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:24:23,387 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:24:23,388 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:24:23,388 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:24:23,391 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:24:23,392 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:24:23,394 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:24:23,394 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:24:23,395 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:24:23,396 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:24:23,396 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:24:23,398 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:24:23,398 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 18:24:23,399 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 18:24:23,399 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 18:24:23,400 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 18:24:23,402 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:24:23,403 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 18:24:23,433 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 18:24:23,433 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:24:23,434 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:24:23,435 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 18:24:23,435 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 18:24:23,435 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:24:23,435 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 18:24:23,436 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 18:24:23,436 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 18:24:23,436 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 18:24:23,436 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:24:23,437 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:24:23,437 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:24:23,437 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 18:24:23,437 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 18:24:23,437 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 18:24:23,438 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:24:23,438 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:24:23,438 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 18:24:23,438 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 18:24:23,439 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 18:24:23,439 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:24:23,439 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:24:23,439 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:24:23,439 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:24:23,440 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 18:24:23,440 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:24:23,440 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:24:23,440 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 18:24:23,441 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 18:24:23,912 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:24:23,937 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:24:23,942 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:24:23,944 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 18:24:23,945 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 18:24:23,946 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c
[2020-09-24 18:24:24,039 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96f375c0d/3a226b7186fa4c26a7c4abc5c19ef1da/FLAGd1cb42a2d
[2020-09-24 18:24:24,701 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 18:24:24,702 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c
[2020-09-24 18:24:24,714 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96f375c0d/3a226b7186fa4c26a7c4abc5c19ef1da/FLAGd1cb42a2d
[2020-09-24 18:24:24,931 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96f375c0d/3a226b7186fa4c26a7c4abc5c19ef1da
[2020-09-24 18:24:24,945 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:24:24,951 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:24:24,955 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:24:24,956 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:24:24,960 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:24:24,961 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,967 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24, skipping insertion in model container
[2020-09-24 18:24:24,967 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,976 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 18:24:25,032 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:24:25,523 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:24:25,533 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 18:24:25,785 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:24:25,806 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 18:24:25,806 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25 WrapperNode
[2020-09-24 18:24:25,806 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:24:25,807 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:24:25,808 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:24:25,808 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:24:25,822 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,823 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,846 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,847 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,886 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,915 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,922 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ...
[2020-09-24 18:24:25,933 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:24:25,934 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:24:25,934 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:24:25,935 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:24:25,940 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (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 18:24:26,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:24:26,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:24:26,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 18:24:26,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:24:26,050 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 18:24:26,050 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:24:26,050 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:24:26,050 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 18:24:26,052 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:24:26,052 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:24:26,052 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:24:27,639 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:24:27,640 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 18:24:27,649 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:27 BoogieIcfgContainer
[2020-09-24 18:24:27,649 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:24:27,651 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:24:27,651 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:24:27,655 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:24:27,656 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:24" (1/3) ...
[2020-09-24 18:24:27,657 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37402b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:27, skipping insertion in model container
[2020-09-24 18:24:27,657 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (2/3) ...
[2020-09-24 18:24:27,658 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37402b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:27, skipping insertion in model container
[2020-09-24 18:24:27,658 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:27" (3/3) ...
[2020-09-24 18:24:27,660 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label13.c
[2020-09-24 18:24:27,673 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:24:27,685 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:24:27,708 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:24:27,744 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:24:27,745 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 18:24:27,745 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:24:27,745 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:24:27,745 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:24:27,745 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 18:24:27,746 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:24:27,746 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:24:27,779 INFO  L276                IsEmpty]: Start isEmpty. Operand 456 states.
[2020-09-24 18:24:27,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2020-09-24 18:24:27,798 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:27,800 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, 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 18:24:27,800 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:27,807 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:27,807 INFO  L82        PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times
[2020-09-24 18:24:27,817 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:27,818 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825728930]
[2020-09-24 18:24:27,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:28,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:28,084 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:28,293 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:28,427 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,249 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,249 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 83
[2020-09-24 18:24:29,249 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 18:24:29,250 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1229
[2020-09-24 18:24:29,253 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:24:29,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 18:24:29,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-09-24 18:24:29,254 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 18:24:29,408 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:29,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:29,419 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,431 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,432 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:29,432 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:29,432 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 18:24:29,432 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:29,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:29,433 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:24:29,433 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:29,464 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 18:24:29,465 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825728930]
[2020-09-24 18:24:29,468 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:24:29,468 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 18:24:29,469 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339395515]
[2020-09-24 18:24:29,476 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:29,477 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:29,495 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:29,496 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:29,499 INFO  L87              Difference]: Start difference. First operand 456 states. Second operand 5 states.
[2020-09-24 18:24:32,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:32,508 INFO  L93              Difference]: Finished difference Result 1266 states and 1836 transitions.
[2020-09-24 18:24:32,509 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 18:24:32,512 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 74
[2020-09-24 18:24:32,513 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:32,579 INFO  L225             Difference]: With dead ends: 1266
[2020-09-24 18:24:32,580 INFO  L226             Difference]: Without dead ends: 747
[2020-09-24 18:24:32,594 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:24:32,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 747 states.
[2020-09-24 18:24:32,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 697.
[2020-09-24 18:24:32,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 697 states.
[2020-09-24 18:24:32,709 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 869 transitions.
[2020-09-24 18:24:32,712 INFO  L78                 Accepts]: Start accepts. Automaton has 697 states and 869 transitions. Word has length 74
[2020-09-24 18:24:32,713 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:32,713 INFO  L479      AbstractCegarLoop]: Abstraction has 697 states and 869 transitions.
[2020-09-24 18:24:32,713 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:32,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 697 states and 869 transitions.
[2020-09-24 18:24:32,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2020-09-24 18:24:32,723 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:32,723 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, 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]
[2020-09-24 18:24:32,724 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:24:32,724 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:32,724 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:32,725 INFO  L82        PathProgramCache]: Analyzing trace with hash 1004714946, now seen corresponding path program 1 times
[2020-09-24 18:24:32,725 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:32,725 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713183513]
[2020-09-24 18:24:32,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:32,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:32,815 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:32,899 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,486 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,576 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:34,508 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:37,779 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:37,780 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 171
[2020-09-24 18:24:37,780 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:24:37,780 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-24 18:24:37,780 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:37,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:37,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 102
[2020-09-24 18:24:37,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-09-24 18:24:37,781 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:37,912 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:37,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:37,923 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:37,938 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:37,939 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:37,941 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:37,942 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-24 18:24:37,942 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:37,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:37,942 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:37,944 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:37,944 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 18:24:37,959 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:37,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:37,997 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,088 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:38,088 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 18:24:38,088 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:38,089 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-09-24 18:24:38,089 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:38,089 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:38,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:38,090 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 18:24:38,090 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:38,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:38,179 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713183513]
[2020-09-24 18:24:38,179 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:38,179 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:38,180 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355930868]
[2020-09-24 18:24:38,182 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:38,182 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:38,183 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:38,183 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:38,183 INFO  L87              Difference]: Start difference. First operand 697 states and 869 transitions. Second operand 5 states.
[2020-09-24 18:24:40,430 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:40,431 INFO  L93              Difference]: Finished difference Result 1925 states and 2470 transitions.
[2020-09-24 18:24:40,432 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:40,432 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 160
[2020-09-24 18:24:40,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:40,443 INFO  L225             Difference]: With dead ends: 1925
[2020-09-24 18:24:40,444 INFO  L226             Difference]: Without dead ends: 1243
[2020-09-24 18:24:40,447 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:40,449 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1243 states.
[2020-09-24 18:24:40,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1190.
[2020-09-24 18:24:40,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1190 states.
[2020-09-24 18:24:40,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1510 transitions.
[2020-09-24 18:24:40,520 INFO  L78                 Accepts]: Start accepts. Automaton has 1190 states and 1510 transitions. Word has length 160
[2020-09-24 18:24:40,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:40,524 INFO  L479      AbstractCegarLoop]: Abstraction has 1190 states and 1510 transitions.
[2020-09-24 18:24:40,524 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:40,524 INFO  L276                IsEmpty]: Start isEmpty. Operand 1190 states and 1510 transitions.
[2020-09-24 18:24:40,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 269
[2020-09-24 18:24:40,543 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:40,544 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, 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, 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 18:24:40,544 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:24:40,545 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:40,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:40,545 INFO  L82        PathProgramCache]: Analyzing trace with hash -747177854, now seen corresponding path program 1 times
[2020-09-24 18:24:40,545 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:40,546 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504833155]
[2020-09-24 18:24:40,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:40,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:40,687 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:41,064 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:41,963 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:42,090 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:42,439 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:42,735 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:44,368 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,356 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,632 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:45,632 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 281
[2020-09-24 18:24:45,632 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 18:24:45,633 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5011
[2020-09-24 18:24:45,633 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:45,633 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:45,633 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 211
[2020-09-24 18:24:45,633 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-09-24 18:24:45,634 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:45,717 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:45,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:45,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,728 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:45,729 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:45,729 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:45,729 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:24:45,730 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:45,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:45,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:45,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:45,730 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:45,742 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:45,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:45,750 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,779 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:45,779 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:45,779 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:45,780 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-24 18:24:45,780 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:45,780 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:45,780 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:45,781 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:45,781 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:45,799 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 18:24:45,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:45,841 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,928 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:45,929 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 111
[2020-09-24 18:24:45,929 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:45,929 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 106
[2020-09-24 18:24:45,929 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:45,930 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:45,930 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:45,930 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 101
[2020-09-24 18:24:45,930 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:46,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2020-09-24 18:24:46,033 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504833155]
[2020-09-24 18:24:46,033 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:46,033 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:46,034 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534222011]
[2020-09-24 18:24:46,036 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:46,037 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:46,037 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:46,038 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:46,038 INFO  L87              Difference]: Start difference. First operand 1190 states and 1510 transitions. Second operand 5 states.
[2020-09-24 18:24:47,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:47,845 INFO  L93              Difference]: Finished difference Result 1962 states and 2586 transitions.
[2020-09-24 18:24:47,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:47,846 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 268
[2020-09-24 18:24:47,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:47,859 INFO  L225             Difference]: With dead ends: 1962
[2020-09-24 18:24:47,861 INFO  L226             Difference]: Without dead ends: 1960
[2020-09-24 18:24:47,868 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:47,871 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1960 states.
[2020-09-24 18:24:47,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1648.
[2020-09-24 18:24:47,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1648 states.
[2020-09-24 18:24:47,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2202 transitions.
[2020-09-24 18:24:47,956 INFO  L78                 Accepts]: Start accepts. Automaton has 1648 states and 2202 transitions. Word has length 268
[2020-09-24 18:24:47,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:47,958 INFO  L479      AbstractCegarLoop]: Abstraction has 1648 states and 2202 transitions.
[2020-09-24 18:24:47,958 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:47,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 1648 states and 2202 transitions.
[2020-09-24 18:24:47,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 283
[2020-09-24 18:24:47,968 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:47,969 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, 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, 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 18:24:47,969 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:24:47,969 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:47,969 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:47,977 INFO  L82        PathProgramCache]: Analyzing trace with hash -1709165424, now seen corresponding path program 1 times
[2020-09-24 18:24:47,977 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:47,978 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159020069]
[2020-09-24 18:24:47,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:48,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:48,087 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:48,229 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:48,686 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:49,158 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,046 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,047 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 295
[2020-09-24 18:24:53,047 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:24:53,047 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5011
[2020-09-24 18:24:53,047 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:53,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-24 18:24:53,048 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 129
[2020-09-24 18:24:53,048 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:53,192 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:53,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,196 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,204 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,205 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:53,205 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:53,206 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 18:24:53,206 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,206 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:53,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:53,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:53,208 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:53,225 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:53,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,258 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,333 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,334 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:53,334 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:53,335 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 90
[2020-09-24 18:24:53,335 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,335 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:53,336 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:53,336 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:24:53,337 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:53,375 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 18:24:53,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,441 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,698 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,698 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 125
[2020-09-24 18:24:53,699 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:53,699 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 288
[2020-09-24 18:24:53,699 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:53,700 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:53,701 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 124
[2020-09-24 18:24:53,701 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:54,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:24:54,465 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159020069]
[2020-09-24 18:24:54,465 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:54,466 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 18:24:54,466 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200476726]
[2020-09-24 18:24:54,467 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 18:24:54,467 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:54,468 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 18:24:54,469 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:54,469 INFO  L87              Difference]: Start difference. First operand 1648 states and 2202 transitions. Second operand 8 states.
[2020-09-24 18:24:56,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:56,786 INFO  L93              Difference]: Finished difference Result 3779 states and 5189 transitions.
[2020-09-24 18:24:56,795 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 18:24:56,795 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 282
[2020-09-24 18:24:56,796 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:56,810 INFO  L225             Difference]: With dead ends: 3779
[2020-09-24 18:24:56,811 INFO  L226             Difference]: Without dead ends: 2146
[2020-09-24 18:24:56,818 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2020-09-24 18:24:56,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2146 states.
[2020-09-24 18:24:56,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1970.
[2020-09-24 18:24:56,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1970 states.
[2020-09-24 18:24:56,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2652 transitions.
[2020-09-24 18:24:56,908 INFO  L78                 Accepts]: Start accepts. Automaton has 1970 states and 2652 transitions. Word has length 282
[2020-09-24 18:24:56,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:56,909 INFO  L479      AbstractCegarLoop]: Abstraction has 1970 states and 2652 transitions.
[2020-09-24 18:24:56,909 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 18:24:56,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 1970 states and 2652 transitions.
[2020-09-24 18:24:56,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 290
[2020-09-24 18:24:56,919 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:56,920 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, 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, 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 18:24:56,920 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:24:56,920 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:56,920 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:56,921 INFO  L82        PathProgramCache]: Analyzing trace with hash -544301819, now seen corresponding path program 1 times
[2020-09-24 18:24:56,921 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:56,921 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159853411]
[2020-09-24 18:24:56,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:56,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:56,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,107 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,471 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,624 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:58,290 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:01,964 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:01,964 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 302
[2020-09-24 18:25:01,964 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:25:01,965 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5002
[2020-09-24 18:25:01,965 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:01,965 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:25:01,965 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 102
[2020-09-24 18:25:01,966 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 130
[2020-09-24 18:25:01,966 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:25:02,064 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:25:02,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:02,068 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:02,075 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:02,076 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:25:02,076 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:02,077 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:25:02,077 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:02,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:25:02,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:02,078 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:25:02,078 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:25:02,091 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:25:02,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:02,120 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:02,184 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:02,184 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 18:25:02,184 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:02,184 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 77
[2020-09-24 18:25:02,185 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:02,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:25:02,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:02,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 18:25:02,185 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:02,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2020-09-24 18:25:02,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:02,256 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:02,435 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:02,435 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 125
[2020-09-24 18:25:02,436 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:02,436 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 200
[2020-09-24 18:25:02,436 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:02,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:25:02,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:25:02,436 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 124
[2020-09-24 18:25:02,437 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:02,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:25:02,673 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159853411]
[2020-09-24 18:25:02,673 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:25:02,673 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:25:02,673 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348230336]
[2020-09-24 18:25:02,674 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:25:02,675 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:25:02,675 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:25:02,675 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:25:02,675 INFO  L87              Difference]: Start difference. First operand 1970 states and 2652 transitions. Second operand 7 states.
[2020-09-24 18:25:05,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:25:05,442 INFO  L93              Difference]: Finished difference Result 4595 states and 6501 transitions.
[2020-09-24 18:25:05,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 18:25:05,444 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 289
[2020-09-24 18:25:05,445 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:25:05,475 INFO  L225             Difference]: With dead ends: 4595
[2020-09-24 18:25:05,475 INFO  L226             Difference]: Without dead ends: 2640
[2020-09-24 18:25:05,489 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2020-09-24 18:25:05,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2640 states.
[2020-09-24 18:25:05,612 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2443.
[2020-09-24 18:25:05,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2443 states.
[2020-09-24 18:25:05,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3267 transitions.
[2020-09-24 18:25:05,625 INFO  L78                 Accepts]: Start accepts. Automaton has 2443 states and 3267 transitions. Word has length 289
[2020-09-24 18:25:05,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:25:05,626 INFO  L479      AbstractCegarLoop]: Abstraction has 2443 states and 3267 transitions.
[2020-09-24 18:25:05,626 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:25:05,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 2443 states and 3267 transitions.
[2020-09-24 18:25:05,645 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2020-09-24 18:25:05,646 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:25:05,646 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, 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, 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 18:25:05,647 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:25:05,647 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:25:05,647 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:25:05,648 INFO  L82        PathProgramCache]: Analyzing trace with hash 360882435, now seen corresponding path program 1 times
[2020-09-24 18:25:05,648 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:25:05,648 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736068790]
[2020-09-24 18:25:05,649 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:25:05,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:05,765 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:05,924 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:06,472 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:07,107 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:10,857 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:10,858 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 312
[2020-09-24 18:25:10,858 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:25:10,858 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5138
[2020-09-24 18:25:10,858 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:10,859 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:25:10,859 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 18:25:10,859 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 101
[2020-09-24 18:25:10,859 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:10,960 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:25:10,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:10,966 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:10,979 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:10,979 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:25:10,979 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:10,979 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-24 18:25:10,980 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:10,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:25:10,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:10,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:25:10,980 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:10,997 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:25:11,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:11,034 FATAL L256   erpolLogProxyWrapper]: Now shrinking...