/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=NARROWEST --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_label57.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-13 06:58:47,348 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-13 06:58:47,351 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-13 06:58:47,374 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-13 06:58:47,375 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-13 06:58:47,376 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-13 06:58:47,377 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-13 06:58:47,379 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-13 06:58:47,381 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-13 06:58:47,382 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-13 06:58:47,383 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2020-10-13 06:58:47,384 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-13 06:58:47,385 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-13 06:58:47,386 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-13 06:58:47,387 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-13 06:58:47,388 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-13 06:58:47,389 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-13 06:58:47,391 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-13 06:58:47,393 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-13 06:58:47,395 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-13 06:58:47,396 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-13 06:58:47,397 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-13 06:58:47,398 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-13 06:58:47,400 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-13 06:58:47,401 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-13 06:58:47,401 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-13 06:58:47,402 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-13 06:58:47,403 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-13 06:58:47,403 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-13 06:58:47,404 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-13 06:58:47,404 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-13 06:58:47,405 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-13 06:58:47,409 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-13 06:58:47,410 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-13 06:58:47,410 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-13 06:58:47,411 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-13 06:58:47,411 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-13 06:58:47,411 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-13 06:58:47,413 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-13 06:58:47,414 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-13 06:58:47,415 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
[2020-10-13 06:58:47,436 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-13 06:58:47,437 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-13 06:58:47,438 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-13 06:58:47,438 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-13 06:58:47,438 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-13 06:58:47,438 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-13 06:58:47,439 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-13 06:58:47,439 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-13 06:58:47,439 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-13 06:58:47,439 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-13 06:58:47,439 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-13 06:58:47,439 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-13 06:58:47,440 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-13 06:58:47,440 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-13 06:58:47,440 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-13 06:58:47,440 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-13 06:58:47,440 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-13 06:58:47,441 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-13 06:58:47,441 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-13 06:58:47,441 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-13 06:58:47,441 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-13 06:58:47,441 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-13 06:58:47,442 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-13 06:58:47,442 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-13 06:58:47,442 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-13 06:58:47,442 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-13 06:58:47,442 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-13 06:58:47,442 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-13 06:58:47,443 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-13 06:58:47,443 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true;
[2020-10-13 06:58:47,732 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-13 06:58:47,751 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-13 06:58:47,756 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-13 06:58:47,759 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-13 06:58:47,762 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-13 06:58:47,763 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label57.c
[2020-10-13 06:58:47,834 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841270be6/95f8215567824730a7e9b1bdd9baff2f/FLAGa0a769173
[2020-10-13 06:58:48,760 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-13 06:58:48,761 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label57.c
[2020-10-13 06:58:48,825 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841270be6/95f8215567824730a7e9b1bdd9baff2f/FLAGa0a769173
[2020-10-13 06:58:49,191 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841270be6/95f8215567824730a7e9b1bdd9baff2f
[2020-10-13 06:58:49,200 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-13 06:58:49,202 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-13 06:58:49,204 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-13 06:58:49,204 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-13 06:58:49,207 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-13 06:58:49,208 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:49" (1/1) ...
[2020-10-13 06:58:49,211 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:49, skipping insertion in model container
[2020-10-13 06:58:49,212 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:49" (1/1) ...
[2020-10-13 06:58:49,220 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-13 06:58:49,518 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-13 06:58:51,631 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-13 06:58:51,635 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-13 06:58:53,032 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-13 06:58:53,101 INFO  L208         MainTranslator]: Completed translation
[2020-10-13 06:58:53,102 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53 WrapperNode
[2020-10-13 06:58:53,102 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-13 06:58:53,103 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-13 06:58:53,103 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-13 06:58:53,104 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-13 06:58:53,119 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,120 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,188 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,188 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,329 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,403 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,444 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ...
[2020-10-13 06:58:53,489 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-13 06:58:53,490 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-13 06:58:53,490 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-13 06:58:53,490 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-13 06:58:53,491 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (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
[2020-10-13 06:58:53,704 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-13 06:58:53,705 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-13 06:58:53,705 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-13 06:58:53,705 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-13 06:58:53,705 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-13 06:58:53,706 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-13 06:58:53,706 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-13 06:58:53,707 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-13 06:58:53,707 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-13 06:58:53,707 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-13 06:58:53,708 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-13 06:58:53,708 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-13 06:58:53,708 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-13 06:58:53,708 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-13 06:58:53,708 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-13 06:58:53,709 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-13 06:58:53,709 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-13 06:58:53,709 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-13 06:58:53,710 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-13 06:58:53,710 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-13 06:58:53,710 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-13 06:58:53,710 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-13 06:58:53,710 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-13 06:58:53,711 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-13 06:58:53,711 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-13 06:59:01,678 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-13 06:59:01,679 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-13 06:59:01,699 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:01 BoogieIcfgContainer
[2020-10-13 06:59:01,699 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-13 06:59:01,700 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-13 06:59:01,701 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-13 06:59:01,705 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-13 06:59:01,705 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:58:49" (1/3) ...
[2020-10-13 06:59:01,706 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f20ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:01, skipping insertion in model container
[2020-10-13 06:59:01,706 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (2/3) ...
[2020-10-13 06:59:01,707 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f20ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:01, skipping insertion in model container
[2020-10-13 06:59:01,707 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:01" (3/3) ...
[2020-10-13 06:59:01,709 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label57.c
[2020-10-13 06:59:01,718 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-13 06:59:01,727 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-13 06:59:01,739 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-13 06:59:01,770 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-13 06:59:01,770 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-13 06:59:01,770 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-13 06:59:01,770 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-13 06:59:01,770 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-13 06:59:01,770 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-13 06:59:01,770 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-13 06:59:01,771 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-13 06:59:01,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-13 06:59:01,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1655
[2020-10-13 06:59:01,966 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:59:01,969 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]
[2020-10-13 06:59:01,970 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:59:01,975 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:59:01,977 INFO  L82        PathProgramCache]: Analyzing trace with hash -1644649951, now seen corresponding path program 1 times
[2020-10-13 06:59:01,986 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:59:01,986 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506130303]
[2020-10-13 06:59:01,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:59:02,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:59:03,376 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:07,900 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:59:07,901 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1676
[2020-10-13 06:59:07,901 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:59:07,901 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5067
[2020-10-13 06:59:07,903 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:59:07,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-13 06:59:07,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:59:07,904 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1670
[2020-10-13 06:59:07,904 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-13 06:59:09,727 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:59:09,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:59:09,735 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:09,742 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:59:09,742 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:59:09,743 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:59:09,743 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-13 06:59:09,743 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:59:09,743 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:59:09,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:59:09,744 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:59:09,744 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:59:12,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-13 06:59:12,889 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506130303]
[2020-10-13 06:59:12,891 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 06:59:12,891 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-13 06:59:12,892 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155730070]
[2020-10-13 06:59:12,901 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-13 06:59:12,902 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:59:12,915 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-13 06:59:12,916 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-13 06:59:12,917 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-13 06:59:38,828 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 06:59:38,828 INFO  L93              Difference]: Finished difference Result 8279 states and 15699 transitions.
[2020-10-13 06:59:38,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-13 06:59:38,830 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1654
[2020-10-13 06:59:38,838 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 06:59:38,889 INFO  L225             Difference]: With dead ends: 8279
[2020-10-13 06:59:38,890 INFO  L226             Difference]: Without dead ends: 5989
[2020-10-13 06:59:38,903 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-13 06:59:38,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5989 states.
[2020-10-13 06:59:39,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5833.
[2020-10-13 06:59:39,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5833 states.
[2020-10-13 06:59:39,158 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 10149 transitions.
[2020-10-13 06:59:39,160 INFO  L78                 Accepts]: Start accepts. Automaton has 5833 states and 10149 transitions. Word has length 1654
[2020-10-13 06:59:39,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 06:59:39,165 INFO  L479      AbstractCegarLoop]: Abstraction has 5833 states and 10149 transitions.
[2020-10-13 06:59:39,165 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-13 06:59:39,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 5833 states and 10149 transitions.
[2020-10-13 06:59:39,293 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1688
[2020-10-13 06:59:39,293 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 06:59:39,295 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-13 06:59:39,295 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-13 06:59:39,295 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 06:59:39,296 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 06:59:39,297 INFO  L82        PathProgramCache]: Analyzing trace with hash 550088699, now seen corresponding path program 1 times
[2020-10-13 06:59:39,297 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 06:59:39,298 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601914076]
[2020-10-13 06:59:39,299 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 06:59:39,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:59:39,459 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:39,582 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:44,027 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:44,594 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:59:44,594 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1713
[2020-10-13 06:59:44,594 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 06:59:44,594 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5161
[2020-10-13 06:59:44,595 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:59:44,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 06:59:44,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 06:59:44,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-10-13 06:59:44,596 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-13 06:59:45,745 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 06:59:45,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:59:45,751 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:45,757 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:59:45,757 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 06:59:45,758 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:59:45,758 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-13 06:59:45,758 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:59:45,758 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 06:59:45,759 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 06:59:45,759 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 06:59:45,766 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-10-13 06:59:45,788 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 06:59:45,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:59:45,796 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:45,827 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:59:45,828 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-13 06:59:45,828 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:59:45,828 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-13 06:59:45,828 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:59:45,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 06:59:45,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 06:59:45,829 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-13 06:59:45,829 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:59:45,865 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-13 06:59:45,871 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 06:59:45,874 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 06:59:45,887 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 06:59:45,887 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-13 06:59:45,888 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 06:59:45,888 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-13 06:59:45,888 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 06:59:45,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 06:59:45,888 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-13 06:59:45,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 06:59:45,889 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 06:59:46,895 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-13 06:59:46,895 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601914076]
[2020-10-13 06:59:46,895 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 06:59:46,896 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-13 06:59:46,896 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090210039]
[2020-10-13 06:59:46,900 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-13 06:59:46,901 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 06:59:46,901 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-13 06:59:46,901 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-13 06:59:46,901 INFO  L87              Difference]: Start difference. First operand 5833 states and 10149 transitions. Second operand 8 states.
[2020-10-13 07:00:17,656 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 07:00:17,657 INFO  L93              Difference]: Finished difference Result 22567 states and 40522 transitions.
[2020-10-13 07:00:17,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-13 07:00:17,658 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1687
[2020-10-13 07:00:17,658 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 07:00:17,746 INFO  L225             Difference]: With dead ends: 22567
[2020-10-13 07:00:17,747 INFO  L226             Difference]: Without dead ends: 16740
[2020-10-13 07:00:17,765 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-13 07:00:17,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16740 states.
[2020-10-13 07:00:18,190 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16740 to 16691.
[2020-10-13 07:00:18,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16691 states.
[2020-10-13 07:00:18,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16691 states to 16691 states and 26556 transitions.
[2020-10-13 07:00:18,238 INFO  L78                 Accepts]: Start accepts. Automaton has 16691 states and 26556 transitions. Word has length 1687
[2020-10-13 07:00:18,239 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 07:00:18,239 INFO  L479      AbstractCegarLoop]: Abstraction has 16691 states and 26556 transitions.
[2020-10-13 07:00:18,239 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-13 07:00:18,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 16691 states and 26556 transitions.
[2020-10-13 07:00:18,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1687
[2020-10-13 07:00:18,424 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 07:00:18,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-13 07:00:18,426 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-13 07:00:18,426 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 07:00:18,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 07:00:18,427 INFO  L82        PathProgramCache]: Analyzing trace with hash 2094130343, now seen corresponding path program 1 times
[2020-10-13 07:00:18,427 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 07:00:18,428 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626101482]
[2020-10-13 07:00:18,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 07:00:18,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:19,212 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:21,790 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:23,991 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:23,991 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1710
[2020-10-13 07:00:23,992 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-13 07:00:23,992 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5093
[2020-10-13 07:00:23,992 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:23,992 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 07:00:23,992 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 07:00:23,993 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-13 07:00:23,993 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:24,963 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 07:00:24,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:24,967 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:24,974 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:24,974 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 07:00:24,975 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:00:24,975 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-13 07:00:24,975 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:24,975 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 07:00:24,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 07:00:24,976 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 07:00:24,976 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:24,998 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 07:00:25,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:25,013 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:25,077 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:25,078 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-13 07:00:25,078 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:00:25,078 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-10-13 07:00:25,078 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:25,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 07:00:25,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 07:00:25,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 33
[2020-10-13 07:00:25,079 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:26,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-13 07:00:26,372 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626101482]
[2020-10-13 07:00:26,373 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-13 07:00:26,373 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-13 07:00:26,373 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723420112]
[2020-10-13 07:00:26,376 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 07:00:26,376 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 07:00:26,376 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 07:00:26,377 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-13 07:00:26,377 INFO  L87              Difference]: Start difference. First operand 16691 states and 26556 transitions. Second operand 7 states.
[2020-10-13 07:00:48,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 07:00:48,660 INFO  L93              Difference]: Finished difference Result 38915 states and 61825 transitions.
[2020-10-13 07:00:48,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-13 07:00:48,662 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1686
[2020-10-13 07:00:48,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 07:00:48,733 INFO  L225             Difference]: With dead ends: 38915
[2020-10-13 07:00:48,733 INFO  L226             Difference]: Without dead ends: 22230
[2020-10-13 07:00:48,773 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-13 07:00:48,800 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22230 states.
[2020-10-13 07:00:49,218 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22230 to 22207.
[2020-10-13 07:00:49,218 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22207 states.
[2020-10-13 07:00:49,277 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22207 states to 22207 states and 30975 transitions.
[2020-10-13 07:00:49,278 INFO  L78                 Accepts]: Start accepts. Automaton has 22207 states and 30975 transitions. Word has length 1686
[2020-10-13 07:00:49,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 07:00:49,279 INFO  L479      AbstractCegarLoop]: Abstraction has 22207 states and 30975 transitions.
[2020-10-13 07:00:49,279 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 07:00:49,280 INFO  L276                IsEmpty]: Start isEmpty. Operand 22207 states and 30975 transitions.
[2020-10-13 07:00:49,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1775
[2020-10-13 07:00:49,405 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 07:00:49,407 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, 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, 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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]
[2020-10-13 07:00:49,410 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-13 07:00:49,411 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 07:00:49,411 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 07:00:49,412 INFO  L82        PathProgramCache]: Analyzing trace with hash -247112600, now seen corresponding path program 1 times
[2020-10-13 07:00:49,412 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 07:00:49,414 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636687773]
[2020-10-13 07:00:49,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 07:00:49,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:49,610 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:49,722 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:50,264 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:54,635 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1800
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5063
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 84
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-13 07:00:54,636 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:55,070 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 07:00:55,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:55,073 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:55,075 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:55,076 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 07:00:55,076 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:00:55,076 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-13 07:00:55,076 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:55,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 07:00:55,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 07:00:55,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 07:00:55,077 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:55,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 07:00:55,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:55,119 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:55,157 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:55,157 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-10-13 07:00:55,157 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:00:55,157 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-10-13 07:00:55,157 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:55,157 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 07:00:55,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 07:00:55,158 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-10-13 07:00:55,158 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:55,174 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2020-10-13 07:00:55,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:00:55,185 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:00:55,225 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:00:55,225 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-10-13 07:00:55,225 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:00:55,226 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 44
[2020-10-13 07:00:55,226 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:00:55,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 07:00:55,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 07:00:55,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-13 07:00:55,226 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:00:56,389 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-13 07:00:56,390 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636687773]
[2020-10-13 07:00:56,390 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 07:00:56,391 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 07:00:56,391 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359282253]
[2020-10-13 07:00:56,393 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 07:00:56,393 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 07:00:56,394 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 07:00:56,394 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 07:00:56,394 INFO  L87              Difference]: Start difference. First operand 22207 states and 30975 transitions. Second operand 7 states.
[2020-10-13 07:01:20,137 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 07:01:20,137 INFO  L93              Difference]: Finished difference Result 68029 states and 104596 transitions.
[2020-10-13 07:01:20,138 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-13 07:01:20,138 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1774
[2020-10-13 07:01:20,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 07:01:20,294 INFO  L225             Difference]: With dead ends: 68029
[2020-10-13 07:01:20,294 INFO  L226             Difference]: Without dead ends: 45828
[2020-10-13 07:01:20,358 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-13 07:01:20,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45828 states.
[2020-10-13 07:01:21,416 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45828 to 45008.
[2020-10-13 07:01:21,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45008 states.
[2020-10-13 07:01:21,504 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45008 states to 45008 states and 59988 transitions.
[2020-10-13 07:01:21,505 INFO  L78                 Accepts]: Start accepts. Automaton has 45008 states and 59988 transitions. Word has length 1774
[2020-10-13 07:01:21,505 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 07:01:21,505 INFO  L479      AbstractCegarLoop]: Abstraction has 45008 states and 59988 transitions.
[2020-10-13 07:01:21,506 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 07:01:21,506 INFO  L276                IsEmpty]: Start isEmpty. Operand 45008 states and 59988 transitions.
[2020-10-13 07:01:21,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1843
[2020-10-13 07:01:21,626 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 07:01:21,628 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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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, 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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]
[2020-10-13 07:01:21,628 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-13 07:01:21,628 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 07:01:21,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 07:01:21,629 INFO  L82        PathProgramCache]: Analyzing trace with hash 497546182, now seen corresponding path program 1 times
[2020-10-13 07:01:21,629 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 07:01:21,629 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334094797]
[2020-10-13 07:01:21,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 07:01:21,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:21,920 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:23,763 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:24,268 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:26,900 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:26,900 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1870
[2020-10-13 07:01:26,900 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-13 07:01:26,900 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5088
[2020-10-13 07:01:26,900 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:26,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-13 07:01:26,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-13 07:01:26,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-13 07:01:26,901 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:27,271 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 07:01:27,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:27,275 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:27,279 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:27,279 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 07:01:27,280 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:27,280 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-13 07:01:27,280 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:27,280 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 07:01:27,280 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 07:01:27,280 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-13 07:01:27,281 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:27,301 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 07:01:27,306 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:27,311 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:27,341 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:27,341 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-13 07:01:27,341 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:27,342 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-13 07:01:27,342 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:27,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 07:01:27,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 07:01:27,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-13 07:01:27,342 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:27,384 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-13 07:01:27,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:27,411 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:27,436 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 111
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 108
[2020-10-13 07:01:27,437 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 07:01:27,438 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:27,461 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2020-10-13 07:01:27,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:27,482 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:27,504 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:27,504 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-13 07:01:27,504 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:27,505 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-10-13 07:01:27,505 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:27,505 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 07:01:27,505 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 54
[2020-10-13 07:01:27,505 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 07:01:27,506 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:28,987 INFO  L134       CoverageAnalysis]: Checked inductivity of 279 backedges. 179 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2020-10-13 07:01:28,988 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334094797]
[2020-10-13 07:01:28,988 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 07:01:28,988 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 07:01:28,989 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77019713]
[2020-10-13 07:01:28,990 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 07:01:28,990 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 07:01:28,990 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 07:01:28,990 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 07:01:28,990 INFO  L87              Difference]: Start difference. First operand 45008 states and 59988 transitions. Second operand 7 states.
[2020-10-13 07:01:51,767 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 07:01:51,768 INFO  L93              Difference]: Finished difference Result 106179 states and 144518 transitions.
[2020-10-13 07:01:51,769 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-13 07:01:51,769 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1842
[2020-10-13 07:01:51,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 07:01:51,967 INFO  L225             Difference]: With dead ends: 106179
[2020-10-13 07:01:51,967 INFO  L226             Difference]: Without dead ends: 61177
[2020-10-13 07:01:52,037 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-13 07:01:52,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61177 states.
[2020-10-13 07:01:53,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61177 to 60804.
[2020-10-13 07:01:53,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60804 states.
[2020-10-13 07:01:53,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60804 states to 60804 states and 81213 transitions.
[2020-10-13 07:01:53,469 INFO  L78                 Accepts]: Start accepts. Automaton has 60804 states and 81213 transitions. Word has length 1842
[2020-10-13 07:01:53,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-13 07:01:53,470 INFO  L479      AbstractCegarLoop]: Abstraction has 60804 states and 81213 transitions.
[2020-10-13 07:01:53,470 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-13 07:01:53,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 60804 states and 81213 transitions.
[2020-10-13 07:01:53,611 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1905
[2020-10-13 07:01:53,611 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-13 07:01:53,613 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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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]
[2020-10-13 07:01:53,613 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-13 07:01:53,613 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-13 07:01:53,613 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-13 07:01:53,614 INFO  L82        PathProgramCache]: Analyzing trace with hash -1458783671, now seen corresponding path program 1 times
[2020-10-13 07:01:53,614 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-13 07:01:53,615 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589388618]
[2020-10-13 07:01:53,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-13 07:01:53,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:53,788 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:53,890 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:54,153 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:54,491 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:58,972 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:58,972 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1934
[2020-10-13 07:01:58,972 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-13 07:01:58,972 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5233
[2020-10-13 07:01:58,972 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:58,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 07:01:58,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 84
[2020-10-13 07:01:58,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-13 07:01:58,973 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:59,288 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-13 07:01:59,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:59,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 07:01:59,294 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 07:01:59,295 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 07:01:59,295 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:59,312 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-13 07:01:59,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:59,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:59,362 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:59,362 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-10-13 07:01:59,362 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:59,362 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-13 07:01:59,363 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:59,363 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-13 07:01:59,363 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-13 07:01:59,363 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-10-13 07:01:59,363 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:59,380 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82
[2020-10-13 07:01:59,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:59,384 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:59,391 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:59,391 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-13 07:01:59,392 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:59,410 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-10-13 07:01:59,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:59,435 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:59,461 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:59,461 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 111
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 108
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 07:01:59,462 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:01:59,481 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2020-10-13 07:01:59,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-13 07:01:59,495 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-13 07:01:59,508 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-13 07:01:59,508 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-13 07:01:59,508 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-13 07:01:59,509 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-10-13 07:01:59,509 FATAL L256   erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-10-13 07:01:59,509 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-13 07:01:59,509 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 54
[2020-10-13 07:01:59,509 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-13 07:01:59,509 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-13 07:02:01,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 454 backedges. 253 proven. 16 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked.
[2020-10-13 07:02:01,044 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589388618]
[2020-10-13 07:02:01,044 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-13 07:02:01,045 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-13 07:02:01,045 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285610269]
[2020-10-13 07:02:01,047 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-13 07:02:01,047 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-13 07:02:01,047 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-13 07:02:01,047 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-13 07:02:01,047 INFO  L87              Difference]: Start difference. First operand 60804 states and 81213 transitions. Second operand 7 states.
[2020-10-13 07:02:26,225 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-13 07:02:26,225 INFO  L93              Difference]: Finished difference Result 179222 states and 254407 transitions.
[2020-10-13 07:02:26,226 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-13 07:02:26,227 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1904
[2020-10-13 07:02:26,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-13 07:02:26,648 INFO  L225             Difference]: With dead ends: 179222
[2020-10-13 07:02:26,648 INFO  L226             Difference]: Without dead ends: 118424
[2020-10-13 07:02:26,771 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-13 07:02:26,892 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118424 states.