/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:24:22,316 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:24:22,319 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:24:22,346 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:24:22,347 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:24:22,348 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:24:22,350 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 18:24:22,358 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:24:22,359 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:24:22,360 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:24:22,361 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:24:22,362 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:24:22,364 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:24:22,365 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:24:22,368 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:24:22,373 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:24:22,376 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:24:22,377 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:24:22,378 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:24:22,383 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:24:22,383 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:24:22,383 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:24:22,387 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:24:22,389 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:24:22,390 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:24:22,391 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:24:22,391 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:24:22,393 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:24:22,394 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:24:22,396 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:24:22,396 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 18:24:22,397 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 18:24:22,400 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:24:22,401 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 18:24:22,458 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 18:24:22,459 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:24:22,461 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:24:22,461 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 18:24:22,461 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 18:24:22,461 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:24:22,462 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 18:24:22,462 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 18:24:22,462 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 18:24:22,463 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 18:24:22,463 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:24:22,464 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:24:22,464 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:24:22,465 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 18:24:22,465 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 18:24:22,465 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 18:24:22,465 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:24:22,466 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:24:22,466 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 18:24:22,466 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 18:24:22,466 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 18:24:22,466 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:24:22,467 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:24:22,467 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:24:22,467 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:24:22,467 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 18:24:22,467 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:24:22,468 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:24:22,468 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 18:24:22,468 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 18:24:22,980 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:24:23,006 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:24:23,010 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:24:23,013 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 18:24:23,014 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 18:24:23,015 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c
[2020-09-24 18:24:23,108 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c74566f7/3ab611d6ccc54b42a6855b3dc9a25e01/FLAG4e5eb7a3c
[2020-09-24 18:24:23,776 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 18:24:23,777 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c
[2020-09-24 18:24:23,793 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c74566f7/3ab611d6ccc54b42a6855b3dc9a25e01/FLAG4e5eb7a3c
[2020-09-24 18:24:24,020 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c74566f7/3ab611d6ccc54b42a6855b3dc9a25e01
[2020-09-24 18:24:24,034 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:24:24,040 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:24:24,041 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:24:24,042 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:24:24,046 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:24:24,047 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,052 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705ef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24, skipping insertion in model container
[2020-09-24 18:24:24,052 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,062 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 18:24:24,119 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:24:24,766 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:24:24,772 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 18:24:24,885 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:24:24,903 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 18:24:24,904 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24 WrapperNode
[2020-09-24 18:24:24,904 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:24:24,905 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:24:24,905 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:24:24,905 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:24:24,924 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,925 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,946 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,946 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:24,986 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:25,003 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:25,011 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
[2020-09-24 18:24:25,023 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:24:25,024 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:24:25,024 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:24:25,024 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:24:25,026 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:24:25,135 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:24:25,136 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:24:25,136 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 18:24:25,136 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:24:25,136 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 18:24:25,137 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:24:25,137 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:24:25,137 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 18:24:25,138 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:24:25,139 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:24:25,139 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:24:26,756 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:24:26,757 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 18:24:26,766 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:26 BoogieIcfgContainer
[2020-09-24 18:24:26,767 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:24:26,768 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:24:26,769 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:24:26,773 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:24:26,773 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:24" (1/3) ...
[2020-09-24 18:24:26,775 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:26, skipping insertion in model container
[2020-09-24 18:24:26,775 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24" (2/3) ...
[2020-09-24 18:24:26,776 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:26, skipping insertion in model container
[2020-09-24 18:24:26,776 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:26" (3/3) ...
[2020-09-24 18:24:26,780 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label11.c
[2020-09-24 18:24:26,795 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:24:26,815 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:24:26,837 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:24:26,874 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:24:26,874 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 18:24:26,875 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:24:26,875 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:24:26,875 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:24:26,875 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 18:24:26,875 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:24:26,875 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:24:26,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 456 states.
[2020-09-24 18:24:26,922 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2020-09-24 18:24:26,922 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:26,923 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]
[2020-09-24 18:24:26,924 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:26,931 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:26,931 INFO  L82        PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times
[2020-09-24 18:24:26,941 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:26,941 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732017845]
[2020-09-24 18:24:26,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:27,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:27,243 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:27,459 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:27,594 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:28,920 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:28,921 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-09-24 18:24:28,921 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 18:24:28,921 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1761
[2020-09-24 18:24:28,925 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:28,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:24:28,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 18:24:28,926 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 18:24:28,927 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 18:24:29,074 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:29,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:29,117 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,136 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,136 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:29,137 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:29,137 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-24 18:24:29,137 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,137 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:29,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:29,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:24:29,138 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:29,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:29,169 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732017845]
[2020-09-24 18:24:29,172 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:24:29,172 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 18:24:29,174 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336597534]
[2020-09-24 18:24:29,183 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 18:24:29,183 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:29,201 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 18:24:29,203 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 18:24:29,207 INFO  L87              Difference]: Start difference. First operand 456 states. Second operand 4 states.
[2020-09-24 18:24:31,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:31,407 INFO  L93              Difference]: Finished difference Result 1089 states and 1514 transitions.
[2020-09-24 18:24:31,407 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 18:24:31,409 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 80
[2020-09-24 18:24:31,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:31,433 INFO  L225             Difference]: With dead ends: 1089
[2020-09-24 18:24:31,433 INFO  L226             Difference]: Without dead ends: 575
[2020-09-24 18:24:31,446 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:31,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 575 states.
[2020-09-24 18:24:31,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545.
[2020-09-24 18:24:31,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 545 states.
[2020-09-24 18:24:31,544 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions.
[2020-09-24 18:24:31,546 INFO  L78                 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 80
[2020-09-24 18:24:31,547 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:31,548 INFO  L479      AbstractCegarLoop]: Abstraction has 545 states and 642 transitions.
[2020-09-24 18:24:31,548 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 18:24:31,548 INFO  L276                IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions.
[2020-09-24 18:24:31,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2020-09-24 18:24:31,558 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:31,558 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:31,559 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:24:31,559 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:31,559 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:31,560 INFO  L82        PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times
[2020-09-24 18:24:31,560 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:31,560 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083283046]
[2020-09-24 18:24:31,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:31,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:31,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:31,786 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:31,911 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:32,571 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:32,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:36,011 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:36,012 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 170
[2020-09-24 18:24:36,012 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:24:36,012 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4367
[2020-09-24 18:24:36,013 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:36,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:36,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-24 18:24:36,014 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 18:24:36,014 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:36,168 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:36,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:36,176 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:36,185 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:36,186 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:36,187 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:36,192 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 18:24:36,192 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:36,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:36,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:36,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:36,194 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:36,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:36,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:36,252 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:36,335 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:36,335 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:36,335 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:36,336 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 99
[2020-09-24 18:24:36,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:36,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:36,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:36,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:24:36,346 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 9
[2020-09-24 18:24:36,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:36,409 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083283046]
[2020-09-24 18:24:36,409 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:36,409 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:36,410 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153622069]
[2020-09-24 18:24:36,412 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:36,412 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:36,412 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:36,413 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:36,413 INFO  L87              Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states.
[2020-09-24 18:24:38,276 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:38,277 INFO  L93              Difference]: Finished difference Result 1247 states and 1527 transitions.
[2020-09-24 18:24:38,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:38,277 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 159
[2020-09-24 18:24:38,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:38,284 INFO  L225             Difference]: With dead ends: 1247
[2020-09-24 18:24:38,285 INFO  L226             Difference]: Without dead ends: 717
[2020-09-24 18:24:38,288 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:38,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 717 states.
[2020-09-24 18:24:38,321 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 697.
[2020-09-24 18:24:38,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 697 states.
[2020-09-24 18:24:38,325 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 807 transitions.
[2020-09-24 18:24:38,326 INFO  L78                 Accepts]: Start accepts. Automaton has 697 states and 807 transitions. Word has length 159
[2020-09-24 18:24:38,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:38,327 INFO  L479      AbstractCegarLoop]: Abstraction has 697 states and 807 transitions.
[2020-09-24 18:24:38,327 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:38,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 697 states and 807 transitions.
[2020-09-24 18:24:38,332 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2020-09-24 18:24:38,332 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:38,332 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:38,333 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:24:38,333 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:38,333 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:38,333 INFO  L82        PathProgramCache]: Analyzing trace with hash -1835717318, now seen corresponding path program 1 times
[2020-09-24 18:24:38,334 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:38,334 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066947518]
[2020-09-24 18:24:38,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:38,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:38,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,516 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,656 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:39,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:39,582 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:39,687 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:43,126 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:43,126 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 177
[2020-09-24 18:24:43,126 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:24:43,126 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4750
[2020-09-24 18:24:43,127 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:43,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:43,127 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 102
[2020-09-24 18:24:43,128 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 18:24:43,128 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:43,220 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:43,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:43,225 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:43,232 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:43,232 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:43,233 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:43,233 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 18:24:43,233 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:43,233 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:43,234 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:43,234 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:43,234 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:43,249 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:43,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:43,283 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:43,354 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:43,354 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 18:24:43,355 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:43,355 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 86
[2020-09-24 18:24:43,355 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:43,355 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:43,356 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:43,356 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 18:24:43,356 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:43,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:43,428 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066947518]
[2020-09-24 18:24:43,428 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:43,429 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:43,429 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748565332]
[2020-09-24 18:24:43,431 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:43,432 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:43,432 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:43,433 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:43,433 INFO  L87              Difference]: Start difference. First operand 697 states and 807 transitions. Second operand 5 states.
[2020-09-24 18:24:45,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:45,508 INFO  L93              Difference]: Finished difference Result 1248 states and 1491 transitions.
[2020-09-24 18:24:45,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:45,509 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 166
[2020-09-24 18:24:45,509 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:45,519 INFO  L225             Difference]: With dead ends: 1248
[2020-09-24 18:24:45,519 INFO  L226             Difference]: Without dead ends: 1246
[2020-09-24 18:24:45,521 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:45,523 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1246 states.
[2020-09-24 18:24:45,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1196.
[2020-09-24 18:24:45,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1196 states.
[2020-09-24 18:24:45,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1432 transitions.
[2020-09-24 18:24:45,578 INFO  L78                 Accepts]: Start accepts. Automaton has 1196 states and 1432 transitions. Word has length 166
[2020-09-24 18:24:45,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:45,580 INFO  L479      AbstractCegarLoop]: Abstraction has 1196 states and 1432 transitions.
[2020-09-24 18:24:45,580 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:45,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 1196 states and 1432 transitions.
[2020-09-24 18:24:45,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2020-09-24 18:24:45,590 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:45,590 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:45,591 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:24:45,592 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:45,596 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:45,597 INFO  L82        PathProgramCache]: Analyzing trace with hash -46198788, now seen corresponding path program 1 times
[2020-09-24 18:24:45,597 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:45,598 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989536115]
[2020-09-24 18:24:45,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:45,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:45,665 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,778 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:45,859 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:46,319 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:46,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:47,190 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:50,639 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:50,640 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 187
[2020-09-24 18:24:50,640 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:24:50,640 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5003
[2020-09-24 18:24:50,640 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:50,641 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:50,641 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 113
[2020-09-24 18:24:50,641 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 73
[2020-09-24 18:24:50,641 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:50,715 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:50,717 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:50,719 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:50,725 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:50,726 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:50,726 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:50,726 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 18:24:50,726 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:50,726 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:50,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:50,727 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:50,727 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:50,739 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:50,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:50,772 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:50,827 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:50,827 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 92
[2020-09-24 18:24:50,827 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:50,828 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-24 18:24:50,828 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:50,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:50,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:50,828 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 84
[2020-09-24 18:24:50,829 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:50,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:50,880 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989536115]
[2020-09-24 18:24:50,881 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:50,881 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:50,881 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013363925]
[2020-09-24 18:24:50,882 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:50,882 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:50,882 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:50,882 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:50,882 INFO  L87              Difference]: Start difference. First operand 1196 states and 1432 transitions. Second operand 5 states.
[2020-09-24 18:24:52,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:52,909 INFO  L93              Difference]: Finished difference Result 2701 states and 3368 transitions.
[2020-09-24 18:24:52,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:52,910 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 176
[2020-09-24 18:24:52,911 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:52,919 INFO  L225             Difference]: With dead ends: 2701
[2020-09-24 18:24:52,920 INFO  L226             Difference]: Without dead ends: 1520
[2020-09-24 18:24:52,924 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:52,927 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1520 states.
[2020-09-24 18:24:52,980 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1500.
[2020-09-24 18:24:52,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1500 states.
[2020-09-24 18:24:52,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1786 transitions.
[2020-09-24 18:24:52,989 INFO  L78                 Accepts]: Start accepts. Automaton has 1500 states and 1786 transitions. Word has length 176
[2020-09-24 18:24:52,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:52,989 INFO  L479      AbstractCegarLoop]: Abstraction has 1500 states and 1786 transitions.
[2020-09-24 18:24:52,990 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:52,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 1500 states and 1786 transitions.
[2020-09-24 18:24:52,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2020-09-24 18:24:52,994 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:52,994 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:52,994 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:24:52,994 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:52,995 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:52,995 INFO  L82        PathProgramCache]: Analyzing trace with hash 325383270, now seen corresponding path program 1 times
[2020-09-24 18:24:52,995 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:52,995 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475581381]
[2020-09-24 18:24:52,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:53,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,116 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,204 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,417 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,845 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:54,879 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,419 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:57,419 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 209
[2020-09-24 18:24:57,420 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:24:57,420 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4341
[2020-09-24 18:24:57,420 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:57,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:57,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 133
[2020-09-24 18:24:57,420 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 75
[2020-09-24 18:24:57,421 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:57,495 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:57,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:57,499 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,506 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:57,506 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:57,507 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:57,507 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 18:24:57,507 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:57,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:57,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:57,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:57,508 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:57,531 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:57,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:57,589 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,693 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:57,694 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-09-24 18:24:57,694 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:57,694 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 129
[2020-09-24 18:24:57,695 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:57,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:57,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:57,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 104
[2020-09-24 18:24:57,696 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:57,813 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:57,814 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475581381]
[2020-09-24 18:24:57,814 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:57,814 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:57,815 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920093154]
[2020-09-24 18:24:57,816 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:57,816 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:57,816 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:57,817 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:57,817 INFO  L87              Difference]: Start difference. First operand 1500 states and 1786 transitions. Second operand 5 states.
[2020-09-24 18:24:59,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:59,352 INFO  L93              Difference]: Finished difference Result 4211 states and 5167 transitions.
[2020-09-24 18:24:59,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:59,355 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 198
[2020-09-24 18:24:59,356 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:59,383 INFO  L225             Difference]: With dead ends: 4211
[2020-09-24 18:24:59,383 INFO  L226             Difference]: Without dead ends: 2726
[2020-09-24 18:24:59,392 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:59,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2726 states.
[2020-09-24 18:24:59,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2266.
[2020-09-24 18:24:59,509 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2266 states.
[2020-09-24 18:24:59,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2767 transitions.
[2020-09-24 18:24:59,524 INFO  L78                 Accepts]: Start accepts. Automaton has 2266 states and 2767 transitions. Word has length 198
[2020-09-24 18:24:59,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:59,526 INFO  L479      AbstractCegarLoop]: Abstraction has 2266 states and 2767 transitions.
[2020-09-24 18:24:59,526 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:59,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 2266 states and 2767 transitions.
[2020-09-24 18:24:59,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2020-09-24 18:24:59,544 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:59,544 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:24:59,545 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:24:59,545 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:59,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:59,546 INFO  L82        PathProgramCache]: Analyzing trace with hash -1284380673, now seen corresponding path program 1 times
[2020-09-24 18:24:59,546 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:59,546 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060680483]
[2020-09-24 18:24:59,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:59,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:59,713 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:59,875 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:00,052 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:00,175 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:01,623 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:01,833 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:04,618 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:04,619 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 284
[2020-09-24 18:25:04,619 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:25:04,619 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-24 18:25:04,619 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:04,619 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:25:04,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 106
[2020-09-24 18:25:04,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 104
[2020-09-24 18:25:04,620 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:04,695 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:25:04,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:04,699 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:04,706 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:04,706 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:25:04,707 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:04,707 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:25:04,707 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:04,707 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:25:04,707 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:04,707 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:25:04,708 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:04,720 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:25:04,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:04,748 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:04,868 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:04,868 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 18:25:04,868 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:04,869 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 132
[2020-09-24 18:25:04,869 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:04,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:25:04,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:04,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 18:25:04,870 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:04,897 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2020-09-24 18:25:04,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:04,939 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:05,080 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:05,081 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 98
[2020-09-24 18:25:05,081 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:05,081 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 158
[2020-09-24 18:25:05,082 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:05,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:25:05,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:25:05,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 97
[2020-09-24 18:25:05,082 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:05,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:25:05,242 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060680483]
[2020-09-24 18:25:05,242 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:25:05,242 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:25:05,243 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124303573]
[2020-09-24 18:25:05,243 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:25:05,243 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:25:05,244 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:25:05,244 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:25:05,244 INFO  L87              Difference]: Start difference. First operand 2266 states and 2767 transitions. Second operand 7 states.
[2020-09-24 18:25:07,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:25:07,748 INFO  L93              Difference]: Finished difference Result 5539 states and 6928 transitions.
[2020-09-24 18:25:07,753 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 18:25:07,753 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 271
[2020-09-24 18:25:07,754 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:25:07,767 INFO  L225             Difference]: With dead ends: 5539
[2020-09-24 18:25:07,767 INFO  L226             Difference]: Without dead ends: 2178
[2020-09-24 18:25:07,777 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-09-24 18:25:07,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2178 states.
[2020-09-24 18:25:07,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2084.
[2020-09-24 18:25:07,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2084 states.
[2020-09-24 18:25:07,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2500 transitions.
[2020-09-24 18:25:07,855 INFO  L78                 Accepts]: Start accepts. Automaton has 2084 states and 2500 transitions. Word has length 271
[2020-09-24 18:25:07,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:25:07,855 INFO  L479      AbstractCegarLoop]: Abstraction has 2084 states and 2500 transitions.
[2020-09-24 18:25:07,855 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:25:07,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 2084 states and 2500 transitions.
[2020-09-24 18:25:07,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 278
[2020-09-24 18:25:07,862 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:25:07,863 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:25:07,863 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 18:25:07,863 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:25:07,863 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:25:07,864 INFO  L82        PathProgramCache]: Analyzing trace with hash 94073539, now seen corresponding path program 1 times
[2020-09-24 18:25:07,864 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:25:07,864 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231631490]
[2020-09-24 18:25:07,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:25:07,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:07,926 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:08,021 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:09,601 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:09,727 FATAL L256   erpolLogProxyWrapper]: Now shrinking...