/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label29.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-12 11:53:04,858 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-12 11:53:04,861 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-12 11:53:04,900 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-12 11:53:04,901 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-12 11:53:04,908 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-12 11:53:04,910 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-12 11:53:04,913 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-12 11:53:04,916 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-12 11:53:04,919 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-12 11:53:04,921 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-12 11:53:04,921 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-12 11:53:04,924 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-12 11:53:04,926 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-12 11:53:04,927 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-12 11:53:04,929 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-12 11:53:04,929 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-12 11:53:04,931 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-12 11:53:04,940 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-12 11:53:04,942 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-12 11:53:04,942 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-12 11:53:04,943 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-12 11:53:04,944 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-12 11:53:04,956 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-12 11:53:04,956 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-12 11:53:04,956 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-12 11:53:04,959 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-12 11:53:04,959 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-12 11:53:04,960 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-12 11:53:04,960 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-12 11:53:04,964 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-12 11:53:04,965 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-12 11:53:04,966 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-12 11:53:04,969 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-12 11:53:04,970 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-12 11:53:04,970 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-12 11:53:04,970 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-12 11:53:04,971 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-12 11:53:04,971 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-12 11:53:04,974 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-12 11:53:04,975 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
[2020-10-12 11:53:05,012 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-12 11:53:05,013 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-12 11:53:05,014 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-12 11:53:05,014 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-12 11:53:05,015 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-12 11:53:05,015 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-12 11:53:05,015 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-12 11:53:05,015 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-12 11:53:05,016 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-12 11:53:05,016 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-12 11:53:05,017 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-12 11:53:05,017 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-12 11:53:05,017 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-12 11:53:05,018 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-12 11:53:05,018 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-12 11:53:05,018 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-12 11:53:05,018 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-12 11:53:05,019 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-12 11:53:05,019 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-12 11:53:05,019 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-12 11:53:05,019 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-12 11:53:05,020 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-12 11:53:05,020 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-12 11:53:05,020 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-12 11:53:05,020 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-12 11:53:05,020 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-12 11:53:05,021 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-12 11:53:05,021 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-12 11:53:05,021 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-12 11:53:05,021 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 -> SequenceOfStatements
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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true;
[2020-10-12 11:53:05,311 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-12 11:53:05,323 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-12 11:53:05,326 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-12 11:53:05,328 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-12 11:53:05,328 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-12 11:53:05,329 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label29.c
[2020-10-12 11:53:05,393 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b43fffc6/32576dd1b0c74b9a9e03a88a0ec76610/FLAG64db73bc4
[2020-10-12 11:53:06,247 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-12 11:53:06,247 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label29.c
[2020-10-12 11:53:06,293 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b43fffc6/32576dd1b0c74b9a9e03a88a0ec76610/FLAG64db73bc4
[2020-10-12 11:53:06,717 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b43fffc6/32576dd1b0c74b9a9e03a88a0ec76610
[2020-10-12 11:53:06,726 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-12 11:53:06,727 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-12 11:53:06,728 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-12 11:53:06,729 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-12 11:53:06,733 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-12 11:53:06,734 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:53:06" (1/1) ...
[2020-10-12 11:53:06,737 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159a218f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:06, skipping insertion in model container
[2020-10-12 11:53:06,737 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:53:06" (1/1) ...
[2020-10-12 11:53:06,745 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-12 11:53:07,032 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-12 11:53:09,285 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:53:09,290 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-12 11:53:10,476 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-12 11:53:10,535 INFO  L208         MainTranslator]: Completed translation
[2020-10-12 11:53:10,535 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10 WrapperNode
[2020-10-12 11:53:10,536 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-12 11:53:10,536 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-12 11:53:10,536 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-12 11:53:10,536 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-12 11:53:10,547 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:10,547 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:10,621 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:10,621 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:10,792 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:10,854 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:10,899 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (1/1) ...
[2020-10-12 11:53:11,105 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-12 11:53:11,106 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-12 11:53:11,106 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-12 11:53:11,106 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-12 11:53:11,107 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (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
[2020-10-12 11:53:11,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-12 11:53:11,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-12 11:53:11,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-12 11:53:11,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-12 11:53:11,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-12 11:53:11,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-12 11:53:11,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-12 11:53:11,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-12 11:53:11,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-12 11:53:11,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-12 11:53:11,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-12 11:53:11,179 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-12 11:53:11,179 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-12 11:53:11,180 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-12 11:53:11,180 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-12 11:53:11,180 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-12 11:53:11,180 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-12 11:53:11,181 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-12 11:53:11,181 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-12 11:53:11,181 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-12 11:53:11,181 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-12 11:53:11,181 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-12 11:53:11,181 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-12 11:53:11,182 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-12 11:53:11,182 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-12 11:53:18,806 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-12 11:53:18,806 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-12 11:53:18,819 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:53:18 BoogieIcfgContainer
[2020-10-12 11:53:18,819 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-12 11:53:18,821 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-12 11:53:18,821 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-12 11:53:18,824 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-12 11:53:18,824 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:53:06" (1/3) ...
[2020-10-12 11:53:18,825 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75202d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:53:18, skipping insertion in model container
[2020-10-12 11:53:18,825 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:53:10" (2/3) ...
[2020-10-12 11:53:18,825 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75202d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:53:18, skipping insertion in model container
[2020-10-12 11:53:18,826 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:53:18" (3/3) ...
[2020-10-12 11:53:18,827 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label29.c
[2020-10-12 11:53:18,837 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-12 11:53:18,845 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-12 11:53:18,859 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-12 11:53:18,887 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-12 11:53:18,887 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-12 11:53:18,888 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-12 11:53:18,888 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-12 11:53:18,888 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-12 11:53:18,888 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-12 11:53:18,888 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-12 11:53:18,888 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-12 11:53:18,935 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-12 11:53:19,031 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1712
[2020-10-12 11:53:19,031 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:53:19,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:53:19,034 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:53:19,040 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:53:19,042 INFO  L82        PathProgramCache]: Analyzing trace with hash -1182876720, now seen corresponding path program 1 times
[2020-10-12 11:53:19,050 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:53:19,051 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487419398]
[2020-10-12 11:53:19,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:53:20,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:53:20,888 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:53:25,339 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:53:25,340 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1733
[2020-10-12 11:53:25,340 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:53:25,341 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5239
[2020-10-12 11:53:25,342 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:53:25,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-12 11:53:25,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-12 11:53:25,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1727
[2020-10-12 11:53:25,343 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-12 11:53:27,060 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:53:27,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:53:27,081 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:53:27,089 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:53:27,090 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:53:27,090 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:53:27,091 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-12 11:53:27,091 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:53:27,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:53:27,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:53:27,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:53:27,093 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:53:29,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 11:53:29,379 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487419398]
[2020-10-12 11:53:29,381 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-12 11:53:29,381 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-12 11:53:29,382 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055371313]
[2020-10-12 11:53:29,392 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-12 11:53:29,392 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:53:29,406 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-12 11:53:29,407 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-12 11:53:29,409 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-12 11:53:45,120 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:53:45,121 INFO  L93              Difference]: Finished difference Result 6360 states and 11961 transitions.
[2020-10-12 11:53:45,122 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-12 11:53:45,123 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1711
[2020-10-12 11:53:45,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:53:45,190 INFO  L225             Difference]: With dead ends: 6360
[2020-10-12 11:53:45,190 INFO  L226             Difference]: Without dead ends: 4074
[2020-10-12 11:53:45,207 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-12 11:53:45,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4074 states.
[2020-10-12 11:53:45,406 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4004.
[2020-10-12 11:53:45,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4004 states.
[2020-10-12 11:53:45,428 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6504 transitions.
[2020-10-12 11:53:45,430 INFO  L78                 Accepts]: Start accepts. Automaton has 4004 states and 6504 transitions. Word has length 1711
[2020-10-12 11:53:45,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:53:45,434 INFO  L479      AbstractCegarLoop]: Abstraction has 4004 states and 6504 transitions.
[2020-10-12 11:53:45,435 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-12 11:53:45,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 4004 states and 6504 transitions.
[2020-10-12 11:53:45,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2020-10-12 11:53:45,560 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:53:45,561 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:53:45,562 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-12 11:53:45,562 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:53:45,562 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:53:45,564 INFO  L82        PathProgramCache]: Analyzing trace with hash -1647134945, now seen corresponding path program 1 times
[2020-10-12 11:53:45,564 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:53:45,564 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025919795]
[2020-10-12 11:53:45,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:53:45,985 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:53:46,305 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:53:46,987 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:53:51,090 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:53:51,091 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1746
[2020-10-12 11:53:51,091 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:53:51,091 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5102
[2020-10-12 11:53:51,092 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:53:51,093 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-12 11:53:51,093 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-12 11:53:51,093 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1724
[2020-10-12 11:53:51,093 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:53:52,353 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:53:52,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:53:52,357 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:53:52,362 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:53:52,362 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:53:52,363 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:53:52,363 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-12 11:53:52,364 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:53:52,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:53:52,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:53:52,364 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:53:52,364 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:53:52,392 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:53:52,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:53:52,399 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:53:52,410 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:53:52,411 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-12 11:53:52,411 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:53:52,411 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-12 11:53:52,411 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:53:52,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:53:52,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:53:52,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-12 11:53:52,412 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:53:54,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 11:53:54,674 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025919795]
[2020-10-12 11:53:54,675 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:53:54,675 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-12 11:53:54,675 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560504178]
[2020-10-12 11:53:54,679 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-12 11:53:54,679 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:53:54,680 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-12 11:53:54,680 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-12 11:53:54,680 INFO  L87              Difference]: Start difference. First operand 4004 states and 6504 transitions. Second operand 5 states.
[2020-10-12 11:54:13,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:54:13,191 INFO  L93              Difference]: Finished difference Result 11627 states and 19057 transitions.
[2020-10-12 11:54:13,195 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-12 11:54:13,195 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1722
[2020-10-12 11:54:13,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:54:13,237 INFO  L225             Difference]: With dead ends: 11627
[2020-10-12 11:54:13,237 INFO  L226             Difference]: Without dead ends: 7629
[2020-10-12 11:54:13,248 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-12 11:54:13,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7629 states.
[2020-10-12 11:54:13,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 7599.
[2020-10-12 11:54:13,459 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7599 states.
[2020-10-12 11:54:13,487 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7599 states to 7599 states and 10942 transitions.
[2020-10-12 11:54:13,488 INFO  L78                 Accepts]: Start accepts. Automaton has 7599 states and 10942 transitions. Word has length 1722
[2020-10-12 11:54:13,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:54:13,491 INFO  L479      AbstractCegarLoop]: Abstraction has 7599 states and 10942 transitions.
[2020-10-12 11:54:13,491 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-12 11:54:13,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 7599 states and 10942 transitions.
[2020-10-12 11:54:13,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1738
[2020-10-12 11:54:13,547 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:54:13,549 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:54:13,549 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-12 11:54:13,549 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:54:13,549 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:54:13,550 INFO  L82        PathProgramCache]: Analyzing trace with hash 1401592287, now seen corresponding path program 1 times
[2020-10-12 11:54:13,550 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:54:13,550 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902741588]
[2020-10-12 11:54:13,551 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:54:13,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:54:13,766 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:54:14,113 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:54:14,660 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:54:18,789 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:54:18,790 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1763
[2020-10-12 11:54:18,790 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-12 11:54:18,790 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5079
[2020-10-12 11:54:18,790 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:54:18,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-12 11:54:18,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 38
[2020-10-12 11:54:18,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1294
[2020-10-12 11:54:18,791 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:54:24,080 WARN  L193               SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38
[2020-10-12 11:54:24,224 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38
[2020-10-12 11:54:24,449 WARN  L193               SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 38
[2020-10-12 11:54:25,043 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 34
[2020-10-12 11:54:25,097 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:54:25,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:54:25,100 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:54:25,102 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:54:25,102 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:54:25,102 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:54:25,103 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 11:54:25,103 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:54:25,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:54:25,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:54:25,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:54:25,103 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:54:25,145 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:54:25,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:54:25,148 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:54:25,153 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:54:25,154 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-12 11:54:25,154 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:54:25,154 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-12 11:54:25,155 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:54:25,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:54:25,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:54:25,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:54:25,156 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:54:25,159 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-12 11:54:25,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:54:25,170 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:54:25,190 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:54:25,190 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-10-12 11:54:25,191 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:54:25,191 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-10-12 11:54:25,191 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:54:25,191 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:54:25,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:54:25,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-12 11:54:25,192 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:54:45,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2020-10-12 11:54:45,825 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902741588]
[2020-10-12 11:54:45,825 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:54:45,826 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-12 11:54:45,826 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624178095]
[2020-10-12 11:54:45,827 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-12 11:54:45,827 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:54:45,828 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-12 11:54:45,828 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506
[2020-10-12 11:54:45,828 INFO  L87              Difference]: Start difference. First operand 7599 states and 10942 transitions. Second operand 23 states.
[2020-10-12 11:54:47,058 WARN  L193               SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75
[2020-10-12 11:55:06,332 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 78
[2020-10-12 11:55:07,700 WARN  L193               SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72
[2020-10-12 11:55:08,957 WARN  L193               SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75
[2020-10-12 11:55:12,698 WARN  L193               SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65
[2020-10-12 11:55:18,076 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:55:18,076 INFO  L93              Difference]: Finished difference Result 16505 states and 24518 transitions.
[2020-10-12 11:55:18,078 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-12 11:55:18,078 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 1737
[2020-10-12 11:55:18,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:55:18,119 INFO  L225             Difference]: With dead ends: 16505
[2020-10-12 11:55:18,119 INFO  L226             Difference]: Without dead ends: 8912
[2020-10-12 11:55:18,137 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640
[2020-10-12 11:55:18,148 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8912 states.
[2020-10-12 11:55:18,326 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 8885.
[2020-10-12 11:55:18,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8885 states.
[2020-10-12 11:55:18,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 12253 transitions.
[2020-10-12 11:55:18,350 INFO  L78                 Accepts]: Start accepts. Automaton has 8885 states and 12253 transitions. Word has length 1737
[2020-10-12 11:55:18,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:55:18,354 INFO  L479      AbstractCegarLoop]: Abstraction has 8885 states and 12253 transitions.
[2020-10-12 11:55:18,354 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-12 11:55:18,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 8885 states and 12253 transitions.
[2020-10-12 11:55:18,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1738
[2020-10-12 11:55:18,424 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:55:18,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-12 11:55:18,427 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-12 11:55:18,427 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:55:18,427 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:55:18,428 INFO  L82        PathProgramCache]: Analyzing trace with hash 98026647, now seen corresponding path program 1 times
[2020-10-12 11:55:18,428 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:55:18,429 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965663795]
[2020-10-12 11:55:18,429 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:55:18,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:55:18,584 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:18,653 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:20,764 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:22,985 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:23,570 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:55:23,570 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1761
[2020-10-12 11:55:23,570 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-12 11:55:23,571 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5010
[2020-10-12 11:55:23,571 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:55:23,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-12 11:55:23,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 34
[2020-10-12 11:55:23,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1726
[2020-10-12 11:55:23,571 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:55:24,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:55:24,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:55:24,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:24,452 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:55:24,453 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:55:24,453 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:55:24,454 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-12 11:55:24,454 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:55:24,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:55:24,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:55:24,455 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:55:24,455 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-12 11:55:24,481 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:55:24,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:55:24,507 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:24,524 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:55:24,574 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:55:24,574 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-12 11:55:24,574 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:55:24,575 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 72
[2020-10-12 11:55:24,575 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:55:24,577 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:55:24,578 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-12 11:55:24,578 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-12 11:55:24,578 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-12 11:55:27,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 11:55:27,360 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965663795]
[2020-10-12 11:55:27,360 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:55:27,361 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-12 11:55:27,361 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149286143]
[2020-10-12 11:55:27,363 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-12 11:55:27,363 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:55:27,363 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-12 11:55:27,363 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-10-12 11:55:27,364 INFO  L87              Difference]: Start difference. First operand 8885 states and 12253 transitions. Second operand 6 states.
[2020-10-12 11:55:59,140 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-12 11:55:59,141 INFO  L93              Difference]: Finished difference Result 24809 states and 35114 transitions.
[2020-10-12 11:55:59,142 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-12 11:55:59,142 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1737
[2020-10-12 11:55:59,142 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-12 11:55:59,193 INFO  L225             Difference]: With dead ends: 24809
[2020-10-12 11:55:59,194 INFO  L226             Difference]: Without dead ends: 15930
[2020-10-12 11:55:59,211 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-10-12 11:55:59,227 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15930 states.
[2020-10-12 11:55:59,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15930 to 15896.
[2020-10-12 11:55:59,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15896 states.
[2020-10-12 11:55:59,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15896 states to 15896 states and 19486 transitions.
[2020-10-12 11:55:59,529 INFO  L78                 Accepts]: Start accepts. Automaton has 15896 states and 19486 transitions. Word has length 1737
[2020-10-12 11:55:59,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-12 11:55:59,530 INFO  L479      AbstractCegarLoop]: Abstraction has 15896 states and 19486 transitions.
[2020-10-12 11:55:59,530 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-12 11:55:59,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 15896 states and 19486 transitions.
[2020-10-12 11:55:59,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1752
[2020-10-12 11:55:59,617 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-12 11:55:59,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-12 11:55:59,619 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-12 11:55:59,619 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-12 11:55:59,619 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-12 11:55:59,620 INFO  L82        PathProgramCache]: Analyzing trace with hash -340315295, now seen corresponding path program 1 times
[2020-10-12 11:55:59,620 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-12 11:55:59,620 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60025339]
[2020-10-12 11:55:59,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-12 11:55:59,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:55:59,769 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:56:00,003 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:56:04,764 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:56:04,765 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1775
[2020-10-12 11:56:04,765 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-12 11:56:04,765 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5021
[2020-10-12 11:56:04,765 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:56:04,765 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-12 11:56:04,766 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 50
[2020-10-12 11:56:04,766 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1231
[2020-10-12 11:56:04,766 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:56:07,169 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34
[2020-10-12 11:56:07,315 WARN  L193               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34
[2020-10-12 11:56:07,595 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33
[2020-10-12 11:56:07,750 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33
[2020-10-12 11:56:07,972 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33
[2020-10-12 11:56:08,139 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33
[2020-10-12 11:56:08,308 WARN  L193               SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30
[2020-10-12 11:56:08,480 WARN  L193               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30
[2020-10-12 11:56:08,668 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30
[2020-10-12 11:56:08,927 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-12 11:56:08,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:56:08,929 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:56:08,931 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:56:08,931 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-12 11:56:08,931 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:56:08,932 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-12 11:56:08,932 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:56:08,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-12 11:56:08,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:56:08,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-12 11:56:08,933 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:56:08,983 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-12 11:56:08,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-12 11:56:08,995 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-12 11:56:09,014 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-12 11:56:09,014 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-12 11:56:09,015 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-12 11:56:09,015 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-12 11:56:09,015 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-10-12 11:56:09,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-12 11:56:09,015 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-12 11:56:09,016 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-12 11:56:09,016 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-12 11:56:25,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-12 11:56:25,217 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60025339]
[2020-10-12 11:56:25,217 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-12 11:56:25,218 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-12 11:56:25,218 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598492455]
[2020-10-12 11:56:25,219 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-12 11:56:25,219 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-12 11:56:25,220 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-12 11:56:25,220 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506
[2020-10-12 11:56:25,220 INFO  L87              Difference]: Start difference. First operand 15896 states and 19486 transitions. Second operand 23 states.
[2020-10-12 11:56:39,629 WARN  L193               SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 74
[2020-10-12 11:56:46,282 WARN  L193               SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76
[2020-10-12 11:56:48,123 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67
[2020-10-12 11:56:48,458 WARN  L193               SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72