/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=WIDEST --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/Problem14_label01.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 03:23:12,632 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 03:23:12,636 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 03:23:12,681 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 03:23:12,682 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 03:23:12,692 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 03:23:12,695 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-25 03:23:12,707 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 03:23:12,710 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 03:23:12,713 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 03:23:12,714 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 03:23:12,716 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 03:23:12,717 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 03:23:12,719 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 03:23:12,728 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 03:23:12,731 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 03:23:12,732 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 03:23:12,733 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 03:23:12,734 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 03:23:12,737 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 03:23:12,737 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 03:23:12,737 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 03:23:12,740 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 03:23:12,741 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 03:23:12,742 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 03:23:12,742 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-25 03:23:12,743 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 03:23:12,745 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 03:23:12,746 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 03:23:12,746 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-25 03:23:12,747 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-25 03:23:12,750 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 03:23:12,751 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
[2020-09-25 03:23:12,799 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 03:23:12,799 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 03:23:12,801 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 03:23:12,802 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 03:23:12,802 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 03:23:12,802 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 03:23:12,802 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 03:23:12,803 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 03:23:12,803 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 03:23:12,803 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 03:23:12,804 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 03:23:12,804 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 03:23:12,805 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 03:23:12,805 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 03:23:12,805 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 03:23:12,805 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 03:23:12,806 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 03:23:12,806 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 03:23:12,806 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 03:23:12,806 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 03:23:12,806 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 03:23:12,807 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 03:23:12,807 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 03:23:12,807 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 03:23:12,807 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 03:23:12,807 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 03:23:12,808 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 03:23:12,808 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 03:23:12,808 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 03:23:12,808 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true;
[2020-09-25 03:23:13,248 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 03:23:13,273 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 03:23:13,277 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 03:23:13,280 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 03:23:13,281 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 03:23:13,282 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c
[2020-09-25 03:23:13,372 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b78bcb9/e30e1d39037a44ceaf089bc942f5d250/FLAGfda1a8633
[2020-09-25 03:23:13,996 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 03:23:13,998 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c
[2020-09-25 03:23:14,030 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b78bcb9/e30e1d39037a44ceaf089bc942f5d250/FLAGfda1a8633
[2020-09-25 03:23:14,231 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b78bcb9/e30e1d39037a44ceaf089bc942f5d250
[2020-09-25 03:23:14,247 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 03:23:14,253 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 03:23:14,257 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 03:23:14,257 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 03:23:14,261 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 03:23:14,262 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:14" (1/1) ...
[2020-09-25 03:23:14,267 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:14, skipping insertion in model container
[2020-09-25 03:23:14,267 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:14" (1/1) ...
[2020-09-25 03:23:14,277 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 03:23:14,354 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 03:23:14,869 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:23:14,875 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 03:23:15,158 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:23:15,193 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 03:23:15,196 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15 WrapperNode
[2020-09-25 03:23:15,196 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 03:23:15,197 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 03:23:15,197 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 03:23:15,197 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 03:23:15,219 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,222 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,243 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,244 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,288 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,310 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,325 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (1/1) ...
[2020-09-25 03:23:15,334 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 03:23:15,335 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 03:23:15,335 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 03:23:15,335 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 03:23:15,337 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (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
[2020-09-25 03:23:15,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 03:23:15,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 03:23:15,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-25 03:23:15,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 03:23:15,419 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-25 03:23:15,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 03:23:15,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 03:23:15,420 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-25 03:23:15,421 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 03:23:15,421 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 03:23:15,421 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 03:23:17,035 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 03:23:17,036 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 03:23:17,046 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:17 BoogieIcfgContainer
[2020-09-25 03:23:17,047 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 03:23:17,048 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 03:23:17,048 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 03:23:17,052 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 03:23:17,052 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:23:14" (1/3) ...
[2020-09-25 03:23:17,054 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:17, skipping insertion in model container
[2020-09-25 03:23:17,054 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:15" (2/3) ...
[2020-09-25 03:23:17,054 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:17, skipping insertion in model container
[2020-09-25 03:23:17,054 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:17" (3/3) ...
[2020-09-25 03:23:17,057 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem14_label01.c
[2020-09-25 03:23:17,069 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 03:23:17,081 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 03:23:17,104 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 03:23:17,142 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 03:23:17,142 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 03:23:17,142 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 03:23:17,142 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 03:23:17,143 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 03:23:17,143 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 03:23:17,143 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 03:23:17,143 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 03:23:17,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 678 states.
[2020-09-25 03:23:17,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2020-09-25 03:23:17,191 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:23:17,193 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]
[2020-09-25 03:23:17,193 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:23:17,201 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:23:17,202 INFO  L82        PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times
[2020-09-25 03:23:17,214 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:23:17,215 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836172546]
[2020-09-25 03:23:17,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:23:17,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:17,528 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:17,795 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:18,080 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:18,081 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-25 03:23:18,081 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:23:18,081 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 656
[2020-09-25 03:23:18,084 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:18,085 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 03:23:18,085 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 03:23:18,085 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 69
[2020-09-25 03:23:18,085 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 03:23:18,211 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:23:18,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:18,221 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:18,239 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:18,239 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 03:23:18,239 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:18,240 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-25 03:23:18,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:18,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 03:23:18,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:23:18,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 03:23:18,241 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:18,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:23:18,278 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836172546]
[2020-09-25 03:23:18,281 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:23:18,282 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 03:23:18,283 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517240099]
[2020-09-25 03:23:18,290 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 03:23:18,290 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:23:18,307 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 03:23:18,308 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-25 03:23:18,311 INFO  L87              Difference]: Start difference. First operand 678 states. Second operand 5 states.
[2020-09-25 03:23:22,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:23:22,261 INFO  L93              Difference]: Finished difference Result 1991 states and 2714 transitions.
[2020-09-25 03:23:22,262 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-25 03:23:22,264 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 73
[2020-09-25 03:23:22,265 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:23:22,295 INFO  L225             Difference]: With dead ends: 1991
[2020-09-25 03:23:22,295 INFO  L226             Difference]: Without dead ends: 1250
[2020-09-25 03:23:22,342 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-25 03:23:22,365 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1250 states.
[2020-09-25 03:23:22,472 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997.
[2020-09-25 03:23:22,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 997 states.
[2020-09-25 03:23:22,481 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions.
[2020-09-25 03:23:22,483 INFO  L78                 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 73
[2020-09-25 03:23:22,483 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:23:22,484 INFO  L479      AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions.
[2020-09-25 03:23:22,484 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 03:23:22,484 INFO  L276                IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions.
[2020-09-25 03:23:22,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2020-09-25 03:23:22,494 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:23:22,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:23:22,494 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 03:23:22,495 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:23:22,495 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:23:22,495 INFO  L82        PathProgramCache]: Analyzing trace with hash -893839862, now seen corresponding path program 1 times
[2020-09-25 03:23:22,496 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:23:22,496 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484879810]
[2020-09-25 03:23:22,496 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:23:22,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:22,572 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:22,865 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:23,299 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:23,365 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:23,476 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:25,430 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:26,016 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:26,016 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 171
[2020-09-25 03:23:26,016 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 03:23:26,017 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3479
[2020-09-25 03:23:26,018 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:26,018 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 03:23:26,018 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 03:23:26,018 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 158
[2020-09-25 03:23:26,019 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:26,254 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:23:26,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:26,267 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:26,285 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:26,285 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 03:23:26,287 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:26,291 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-25 03:23:26,292 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:26,292 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 03:23:26,293 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:23:26,293 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 03:23:26,293 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:23:26,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-25 03:23:26,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:26,384 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:26,491 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:26,629 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:26,630 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 83
[2020-09-25 03:23:26,630 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:23:26,631 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 270
[2020-09-25 03:23:26,631 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:26,639 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 03:23:26,639 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-25 03:23:26,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 82
[2020-09-25 03:23:26,640 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-25 03:23:26,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:23:26,898 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484879810]
[2020-09-25 03:23:26,898 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:23:26,898 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-25 03:23:26,899 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775891474]
[2020-09-25 03:23:26,902 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 03:23:26,902 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:23:26,902 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 03:23:26,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-25 03:23:26,903 INFO  L87              Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 8 states.
[2020-09-25 03:23:31,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:23:31,447 INFO  L93              Difference]: Finished difference Result 1565 states and 2022 transitions.
[2020-09-25 03:23:31,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-25 03:23:31,448 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 160
[2020-09-25 03:23:31,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:23:31,459 INFO  L225             Difference]: With dead ends: 1565
[2020-09-25 03:23:31,459 INFO  L226             Difference]: Without dead ends: 1563
[2020-09-25 03:23:31,461 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240
[2020-09-25 03:23:31,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1563 states.
[2020-09-25 03:23:31,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1192.
[2020-09-25 03:23:31,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1192 states.
[2020-09-25 03:23:31,510 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1554 transitions.
[2020-09-25 03:23:31,510 INFO  L78                 Accepts]: Start accepts. Automaton has 1192 states and 1554 transitions. Word has length 160
[2020-09-25 03:23:31,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:23:31,512 INFO  L479      AbstractCegarLoop]: Abstraction has 1192 states and 1554 transitions.
[2020-09-25 03:23:31,512 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 03:23:31,512 INFO  L276                IsEmpty]: Start isEmpty. Operand 1192 states and 1554 transitions.
[2020-09-25 03:23:31,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2020-09-25 03:23:31,516 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:23:31,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:23:31,517 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 03:23:31,517 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:23:31,517 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:23:31,518 INFO  L82        PathProgramCache]: Analyzing trace with hash 2120468014, now seen corresponding path program 1 times
[2020-09-25 03:23:31,518 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:23:31,518 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133056022]
[2020-09-25 03:23:31,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:23:31,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:31,581 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:31,712 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:32,020 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:33,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:35,428 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:35,429 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 192
[2020-09-25 03:23:35,429 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 03:23:35,430 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3875
[2020-09-25 03:23:35,430 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:35,430 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 03:23:35,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 03:23:35,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 111
[2020-09-25 03:23:35,431 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:23:35,509 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:23:35,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:35,514 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:35,526 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:35,527 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 03:23:35,527 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:35,527 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-25 03:23:35,527 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:35,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 03:23:35,530 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:23:35,530 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 03:23:35,531 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 03:23:35,545 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-25 03:23:35,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:35,582 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:35,717 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:35,717 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 104
[2020-09-25 03:23:35,718 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:35,718 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 152
[2020-09-25 03:23:35,718 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:35,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:23:35,718 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-25 03:23:35,719 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-09-25 03:23:35,719 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:35,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:23:35,876 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133056022]
[2020-09-25 03:23:35,876 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:23:35,877 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 03:23:35,877 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033058776]
[2020-09-25 03:23:35,879 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 03:23:35,880 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:23:35,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 03:23:35,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-25 03:23:35,880 INFO  L87              Difference]: Start difference. First operand 1192 states and 1554 transitions. Second operand 7 states.
[2020-09-25 03:23:38,907 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:23:38,908 INFO  L93              Difference]: Finished difference Result 3030 states and 4085 transitions.
[2020-09-25 03:23:38,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-25 03:23:38,910 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 181
[2020-09-25 03:23:38,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:23:38,921 INFO  L225             Difference]: With dead ends: 3030
[2020-09-25 03:23:38,921 INFO  L226             Difference]: Without dead ends: 1853
[2020-09-25 03:23:38,927 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-09-25 03:23:38,929 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1853 states.
[2020-09-25 03:23:38,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1779.
[2020-09-25 03:23:38,983 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1779 states.
[2020-09-25 03:23:38,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions.
[2020-09-25 03:23:38,992 INFO  L78                 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 181
[2020-09-25 03:23:38,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:23:38,993 INFO  L479      AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions.
[2020-09-25 03:23:38,994 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 03:23:38,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions.
[2020-09-25 03:23:39,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 332
[2020-09-25 03:23:39,001 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:23:39,002 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, 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]
[2020-09-25 03:23:39,002 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 03:23:39,002 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:23:39,003 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:23:39,007 INFO  L82        PathProgramCache]: Analyzing trace with hash -1634682488, now seen corresponding path program 1 times
[2020-09-25 03:23:39,007 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:23:39,008 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307882163]
[2020-09-25 03:23:39,008 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:23:39,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:39,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:39,186 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:39,339 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:39,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:40,002 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:40,698 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:43,236 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:44,063 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:44,063 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 344
[2020-09-25 03:23:44,063 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-25 03:23:44,064 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5012
[2020-09-25 03:23:44,065 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:44,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 03:23:44,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-25 03:23:44,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 178
[2020-09-25 03:23:44,066 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:44,201 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:23:44,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:44,206 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:44,214 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:44,214 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 03:23:44,214 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:44,214 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 03:23:44,215 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:44,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:23:44,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:23:44,215 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:23:44,216 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:23:44,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-25 03:23:44,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:44,256 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:44,332 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:44,333 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-09-25 03:23:44,333 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:44,333 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 86
[2020-09-25 03:23:44,333 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:44,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:23:44,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:23:44,360 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 70
[2020-09-25 03:23:44,361 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 27
[2020-09-25 03:23:44,400 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2020-09-25 03:23:44,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:44,465 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:44,754 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:44,754 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 172
[2020-09-25 03:23:44,755 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:44,755 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 319
[2020-09-25 03:23:44,755 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:44,755 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:23:44,755 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-25 03:23:44,755 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 171
[2020-09-25 03:23:44,756 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:45,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 03:23:45,619 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307882163]
[2020-09-25 03:23:45,619 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:23:45,620 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-25 03:23:45,620 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567522579]
[2020-09-25 03:23:45,621 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 03:23:45,622 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:23:45,624 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 03:23:45,625 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-09-25 03:23:45,625 INFO  L87              Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 9 states.
[2020-09-25 03:23:51,771 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:23:51,774 INFO  L93              Difference]: Finished difference Result 4710 states and 6058 transitions.
[2020-09-25 03:23:51,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-09-25 03:23:51,774 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 331
[2020-09-25 03:23:51,775 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:23:51,792 INFO  L225             Difference]: With dead ends: 4710
[2020-09-25 03:23:51,793 INFO  L226             Difference]: Without dead ends: 2946
[2020-09-25 03:23:51,799 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506
[2020-09-25 03:23:51,803 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2946 states.
[2020-09-25 03:23:51,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2551.
[2020-09-25 03:23:51,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2551 states.
[2020-09-25 03:23:51,883 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 3301 transitions.
[2020-09-25 03:23:51,883 INFO  L78                 Accepts]: Start accepts. Automaton has 2551 states and 3301 transitions. Word has length 331
[2020-09-25 03:23:51,884 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:23:51,884 INFO  L479      AbstractCegarLoop]: Abstraction has 2551 states and 3301 transitions.
[2020-09-25 03:23:51,884 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 03:23:51,884 INFO  L276                IsEmpty]: Start isEmpty. Operand 2551 states and 3301 transitions.
[2020-09-25 03:23:51,893 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 368
[2020-09-25 03:23:51,893 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:23:51,893 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-25 03:23:51,894 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 03:23:51,894 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:23:51,894 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:23:51,894 INFO  L82        PathProgramCache]: Analyzing trace with hash 1813149944, now seen corresponding path program 1 times
[2020-09-25 03:23:51,895 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:23:51,895 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954679086]
[2020-09-25 03:23:51,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:23:51,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:52,067 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:52,207 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:52,427 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:52,863 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:55,806 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:56,136 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:56,232 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:57,080 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:57,081 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 380
[2020-09-25 03:23:57,081 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-25 03:23:57,081 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5097
[2020-09-25 03:23:57,082 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:57,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 03:23:57,082 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 03:23:57,083 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 297
[2020-09-25 03:23:57,083 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:23:57,190 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:23:57,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:57,202 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:57,216 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:57,217 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-25 03:23:57,217 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:57,217 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-25 03:23:57,218 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:57,218 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 03:23:57,218 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:23:57,219 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 03:23:57,219 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:23:57,239 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-25 03:23:57,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:57,284 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:57,349 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:57,492 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:57,493 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-09-25 03:23:57,493 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:23:57,493 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 230
[2020-09-25 03:23:57,493 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:57,493 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:23:57,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-25 03:23:57,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 113
[2020-09-25 03:23:57,494 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:57,587 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2020-09-25 03:23:57,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:23:57,648 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:23:57,908 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:23:57,908 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 172
[2020-09-25 03:23:57,908 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:23:57,908 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 289
[2020-09-25 03:23:57,908 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:23:57,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 03:23:57,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-25 03:23:57,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 171
[2020-09-25 03:23:57,909 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:23:58,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 230 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2020-09-25 03:23:58,260 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954679086]
[2020-09-25 03:23:58,261 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 03:23:58,261 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-25 03:23:58,261 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779058684]
[2020-09-25 03:23:58,262 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 03:23:58,262 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:23:58,262 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 03:23:58,263 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-09-25 03:23:58,263 INFO  L87              Difference]: Start difference. First operand 2551 states and 3301 transitions. Second operand 8 states.
[2020-09-25 03:24:01,467 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:24:01,468 INFO  L93              Difference]: Finished difference Result 5913 states and 7659 transitions.
[2020-09-25 03:24:01,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-25 03:24:01,469 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 367
[2020-09-25 03:24:01,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:24:01,488 INFO  L225             Difference]: With dead ends: 5913
[2020-09-25 03:24:01,488 INFO  L226             Difference]: Without dead ends: 3377
[2020-09-25 03:24:01,498 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2020-09-25 03:24:01,502 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3377 states.
[2020-09-25 03:24:01,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 2937.
[2020-09-25 03:24:01,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2937 states.
[2020-09-25 03:24:01,569 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3777 transitions.
[2020-09-25 03:24:01,569 INFO  L78                 Accepts]: Start accepts. Automaton has 2937 states and 3777 transitions. Word has length 367
[2020-09-25 03:24:01,570 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:24:01,570 INFO  L479      AbstractCegarLoop]: Abstraction has 2937 states and 3777 transitions.
[2020-09-25 03:24:01,570 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 03:24:01,570 INFO  L276                IsEmpty]: Start isEmpty. Operand 2937 states and 3777 transitions.
[2020-09-25 03:24:01,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2020-09-25 03:24:01,582 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:24:01,583 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2020-09-25 03:24:01,583 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 03:24:01,583 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:24:01,583 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:24:01,584 INFO  L82        PathProgramCache]: Analyzing trace with hash -93474599, now seen corresponding path program 1 times
[2020-09-25 03:24:01,584 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:24:01,584 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921380733]
[2020-09-25 03:24:01,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:24:01,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:24:01,727 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:24:01,995 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:24:02,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:24:02,876 FATAL L256   erpolLogProxyWrapper]: Now shrinking...