/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=LOWLEXORDER --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/Problem02_label50.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:43:29,372 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:43:29,375 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:43:29,402 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:43:29,403 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:43:29,404 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:43:29,406 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 21:43:29,414 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:43:29,415 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:43:29,416 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:43:29,417 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:43:29,419 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:43:29,420 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:43:29,422 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:43:29,424 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:43:29,428 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:43:29,429 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:43:29,432 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:43:29,433 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:43:29,439 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:43:29,439 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:43:29,440 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:43:29,444 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:43:29,444 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:43:29,447 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:43:29,448 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:43:29,450 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:43:29,451 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:43:29,453 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:43:29,455 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:43:29,456 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 21:43:29,457 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 21:43:29,457 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 21:43:29,457 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 21:43:29,458 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 21:43:29,461 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:43:29,461 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 21:43:29,514 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:43:29,514 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:43:29,517 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:43:29,517 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:43:29,517 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:43:29,517 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:43:29,518 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:43:29,518 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:43:29,518 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:43:29,518 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:43:29,520 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:43:29,520 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:43:29,520 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:43:29,521 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:43:29,521 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:43:29,521 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:43:29,522 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:43:29,522 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:43:29,522 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:43:29,522 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:43:29,522 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:43:29,523 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:43:29,523 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:43:29,523 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:43:29,523 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:43:29,523 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:43:29,524 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:43:29,524 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:43:29,524 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:43:29,524 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:43:30,010 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:43:30,028 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:43:30,033 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:43:30,035 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:43:30,035 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:43:30,037 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c
[2020-09-24 21:43:30,130 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2b1dc614/36306da3ed20438888722a0e4f94ef3f/FLAGebaa60bd6
[2020-09-24 21:43:30,761 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:43:30,762 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c
[2020-09-24 21:43:30,775 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2b1dc614/36306da3ed20438888722a0e4f94ef3f/FLAGebaa60bd6
[2020-09-24 21:43:31,025 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2b1dc614/36306da3ed20438888722a0e4f94ef3f
[2020-09-24 21:43:31,040 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:43:31,046 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:43:31,047 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:43:31,048 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:43:31,052 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:43:31,053 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:31,057 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3b431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31, skipping insertion in model container
[2020-09-24 21:43:31,057 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:31,066 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:43:31,122 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:43:31,539 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:43:31,549 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:43:31,820 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:43:31,859 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:43:31,862 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31 WrapperNode
[2020-09-24 21:43:31,862 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:43:31,863 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:43:31,863 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:43:31,864 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:43:31,886 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:31,896 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:31,942 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:31,942 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:31,990 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:32,011 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:32,024 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (1/1) ...
[2020-09-24 21:43:32,037 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:43:32,037 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:43:32,037 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:43:32,038 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:43:32,039 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (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 21:43:32,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:43:32,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:43:32,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 21:43:32,121 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:43:32,121 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 21:43:32,121 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:43:32,121 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:43:32,121 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 21:43:32,121 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:43:32,122 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:43:32,122 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:43:33,554 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:43:33,554 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 21:43:33,571 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:43:33 BoogieIcfgContainer
[2020-09-24 21:43:33,571 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:43:33,573 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:43:33,574 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:43:33,577 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:43:33,578 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:43:31" (1/3) ...
[2020-09-24 21:43:33,579 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e52272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:43:33, skipping insertion in model container
[2020-09-24 21:43:33,580 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:31" (2/3) ...
[2020-09-24 21:43:33,580 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e52272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:43:33, skipping insertion in model container
[2020-09-24 21:43:33,581 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:43:33" (3/3) ...
[2020-09-24 21:43:33,583 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem02_label50.c
[2020-09-24 21:43:33,597 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:43:33,618 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:43:33,642 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:43:33,687 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:43:33,688 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:43:33,688 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:43:33,688 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:43:33,688 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:43:33,688 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:43:33,689 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:43:33,689 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:43:33,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 527 states.
[2020-09-24 21:43:33,766 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2020-09-24 21:43:33,766 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:43:33,768 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:43:33,769 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:43:33,777 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:43:33,778 INFO  L82        PathProgramCache]: Analyzing trace with hash -593885342, now seen corresponding path program 1 times
[2020-09-24 21:43:33,789 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:43:33,789 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420585179]
[2020-09-24 21:43:33,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:43:34,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:43:34,120 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:34,427 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:34,705 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:36,304 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:38,188 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:43:38,188 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 116
[2020-09-24 21:43:38,189 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 21:43:38,189 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4170
[2020-09-24 21:43:38,192 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:43:38,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-09-24 21:43:38,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-24 21:43:38,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-09-24 21:43:38,193 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 21:43:38,807 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39
[2020-09-24 21:43:38,934 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37
[2020-09-24 21:43:39,307 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:43:39,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:43:39,325 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:39,409 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:43:39,409 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 21:43:39,409 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:43:39,410 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 90
[2020-09-24 21:43:39,410 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:43:39,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 21:43:39,410 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:43:39,411 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 21:43:39,411 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:43:39,682 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 21:43:39,683 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420585179]
[2020-09-24 21:43:39,685 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:43:39,686 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-09-24 21:43:39,687 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824334119]
[2020-09-24 21:43:39,694 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-24 21:43:39,695 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:43:39,713 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-24 21:43:39,715 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240
[2020-09-24 21:43:39,717 INFO  L87              Difference]: Start difference. First operand 527 states. Second operand 16 states.
[2020-09-24 21:43:40,321 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-09-24 21:43:40,622 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98
[2020-09-24 21:43:40,972 WARN  L193               SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95
[2020-09-24 21:43:41,690 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80
[2020-09-24 21:43:42,192 WARN  L193               SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91
[2020-09-24 21:43:43,427 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86
[2020-09-24 21:43:43,644 WARN  L193               SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77
[2020-09-24 21:43:44,009 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81
[2020-09-24 21:43:44,804 WARN  L193               SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72
[2020-09-24 21:43:45,309 WARN  L193               SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66
[2020-09-24 21:43:45,539 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78
[2020-09-24 21:43:46,576 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73
[2020-09-24 21:43:47,023 WARN  L193               SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67
[2020-09-24 21:43:49,609 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:43:49,609 INFO  L93              Difference]: Finished difference Result 1870 states and 2662 transitions.
[2020-09-24 21:43:49,610 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. 
[2020-09-24 21:43:49,611 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 107
[2020-09-24 21:43:49,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:43:49,645 INFO  L225             Difference]: With dead ends: 1870
[2020-09-24 21:43:49,646 INFO  L226             Difference]: Without dead ends: 1241
[2020-09-24 21:43:49,663 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640
[2020-09-24 21:43:49,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1241 states.
[2020-09-24 21:43:49,792 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1076.
[2020-09-24 21:43:49,795 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1076 states.
[2020-09-24 21:43:49,801 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1294 transitions.
[2020-09-24 21:43:49,804 INFO  L78                 Accepts]: Start accepts. Automaton has 1076 states and 1294 transitions. Word has length 107
[2020-09-24 21:43:49,807 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:43:49,807 INFO  L479      AbstractCegarLoop]: Abstraction has 1076 states and 1294 transitions.
[2020-09-24 21:43:49,807 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-24 21:43:49,807 INFO  L276                IsEmpty]: Start isEmpty. Operand 1076 states and 1294 transitions.
[2020-09-24 21:43:49,825 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2020-09-24 21:43:49,825 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:43:49,826 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-24 21:43:49,826 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:43:49,826 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:43:49,827 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:43:49,827 INFO  L82        PathProgramCache]: Analyzing trace with hash 1983705152, now seen corresponding path program 1 times
[2020-09-24 21:43:49,827 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:43:49,828 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868727905]
[2020-09-24 21:43:49,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:43:49,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:43:49,907 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:50,024 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:50,088 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:50,132 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:50,456 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:51,854 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:52,164 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:52,525 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:52,708 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:54,489 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:54,894 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:43:54,895 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 140
[2020-09-24 21:43:54,895 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 10
[2020-09-24 21:43:54,895 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-09-24 21:43:54,895 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:43:54,896 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-09-24 21:43:54,896 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 21:43:54,896 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 119
[2020-09-24 21:43:54,896 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:43:55,467 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40
[2020-09-24 21:43:55,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:43:55,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:43:55,905 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:55,946 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:43:55,946 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 21:43:55,946 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:43:55,946 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 45
[2020-09-24 21:43:55,947 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:43:55,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:43:55,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:43:55,947 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 21:43:55,948 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:43:56,060 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 21:43:56,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:43:56,070 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:56,108 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:43:56,143 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:43:56,144 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 21:43:56,144 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:43:56,144 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 77
[2020-09-24 21:43:56,144 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:43:56,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 21:43:56,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 21:43:56,146 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-24 21:43:56,147 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 21:43:56,502 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:43:56,503 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868727905]
[2020-09-24 21:43:56,503 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 21:43:56,503 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-09-24 21:43:56,504 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145520143]
[2020-09-24 21:43:56,506 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-09-24 21:43:56,506 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:43:56,507 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-09-24 21:43:56,507 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380
[2020-09-24 21:43:56,507 INFO  L87              Difference]: Start difference. First operand 1076 states and 1294 transitions. Second operand 20 states.
[2020-09-24 21:43:57,139 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83
[2020-09-24 21:43:57,466 WARN  L193               SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101
[2020-09-24 21:43:57,912 WARN  L193               SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97
[2020-09-24 21:43:58,254 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94
[2020-09-24 21:43:58,552 WARN  L193               SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61
[2020-09-24 21:43:59,052 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85
[2020-09-24 21:43:59,717 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84
[2020-09-24 21:44:00,013 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61
[2020-09-24 21:44:00,225 WARN  L193               SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 102
[2020-09-24 21:44:00,480 WARN  L193               SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79
[2020-09-24 21:44:00,821 WARN  L193               SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91
[2020-09-24 21:44:01,564 WARN  L193               SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-09-24 21:44:01,811 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2020-09-24 21:44:02,784 WARN  L193               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76
[2020-09-24 21:44:03,216 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86
[2020-09-24 21:44:04,898 WARN  L193               SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72
[2020-09-24 21:44:05,754 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66
[2020-09-24 21:44:05,977 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86
[2020-09-24 21:44:08,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:44:08,294 INFO  L93              Difference]: Finished difference Result 4751 states and 6494 transitions.
[2020-09-24 21:44:08,295 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. 
[2020-09-24 21:44:08,295 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states. Word has length 129
[2020-09-24 21:44:08,296 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:44:08,318 INFO  L225             Difference]: With dead ends: 4751
[2020-09-24 21:44:08,319 INFO  L226             Difference]: Without dead ends: 3755
[2020-09-24 21:44:08,330 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=910, Invalid=2282, Unknown=0, NotChecked=0, Total=3192
[2020-09-24 21:44:08,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3755 states.
[2020-09-24 21:44:08,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3529.
[2020-09-24 21:44:08,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3529 states.
[2020-09-24 21:44:08,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4205 transitions.
[2020-09-24 21:44:08,448 INFO  L78                 Accepts]: Start accepts. Automaton has 3529 states and 4205 transitions. Word has length 129
[2020-09-24 21:44:08,449 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:44:08,449 INFO  L479      AbstractCegarLoop]: Abstraction has 3529 states and 4205 transitions.
[2020-09-24 21:44:08,449 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-09-24 21:44:08,449 INFO  L276                IsEmpty]: Start isEmpty. Operand 3529 states and 4205 transitions.
[2020-09-24 21:44:08,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2020-09-24 21:44:08,459 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:44:08,459 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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]
[2020-09-24 21:44:08,459 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:44:08,460 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:44:08,460 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:44:08,460 INFO  L82        PathProgramCache]: Analyzing trace with hash -652616843, now seen corresponding path program 1 times
[2020-09-24 21:44:08,460 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:44:08,461 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370004485]
[2020-09-24 21:44:08,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:44:08,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:08,516 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:08,699 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:08,798 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:08,855 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:09,289 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:09,387 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:11,531 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:11,532 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 155
[2020-09-24 21:44:11,532 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 21:44:11,532 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3037
[2020-09-24 21:44:11,532 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:11,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-24 21:44:11,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 21:44:11,533 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 134
[2020-09-24 21:44:11,533 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:44:11,630 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:44:11,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:11,638 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:11,652 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:11,653 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 21:44:11,654 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:11,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 21:44:11,654 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:11,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:44:11,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:44:11,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-24 21:44:11,655 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:44:11,676 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 21:44:11,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:11,681 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:11,693 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:11,710 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:11,711 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 21:44:11,711 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:44:11,711 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-09-24 21:44:11,712 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:11,712 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 21:44:11,712 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 21:44:11,712 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 21:44:11,712 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:11,727 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-09-24 21:44:11,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:11,732 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:11,742 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:11,762 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:11,762 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 14
[2020-09-24 21:44:11,772 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:44:11,772 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-09-24 21:44:11,772 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:11,772 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 21:44:11,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 21:44:11,776 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-24 21:44:11,776 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 21:44:11,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-09-24 21:44:11,812 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370004485]
[2020-09-24 21:44:11,812 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 21:44:11,812 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 21:44:11,813 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355211126]
[2020-09-24 21:44:11,813 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 21:44:11,813 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:44:11,814 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 21:44:11,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 21:44:11,814 INFO  L87              Difference]: Start difference. First operand 3529 states and 4205 transitions. Second operand 7 states.
[2020-09-24 21:44:13,771 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:44:13,772 INFO  L93              Difference]: Finished difference Result 7759 states and 9655 transitions.
[2020-09-24 21:44:13,772 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 21:44:13,773 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 142
[2020-09-24 21:44:13,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:44:13,801 INFO  L225             Difference]: With dead ends: 7759
[2020-09-24 21:44:13,802 INFO  L226             Difference]: Without dead ends: 4310
[2020-09-24 21:44:13,815 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72
[2020-09-24 21:44:13,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4310 states.
[2020-09-24 21:44:13,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 3994.
[2020-09-24 21:44:13,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3994 states.
[2020-09-24 21:44:13,954 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 4880 transitions.
[2020-09-24 21:44:13,955 INFO  L78                 Accepts]: Start accepts. Automaton has 3994 states and 4880 transitions. Word has length 142
[2020-09-24 21:44:13,955 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:44:13,955 INFO  L479      AbstractCegarLoop]: Abstraction has 3994 states and 4880 transitions.
[2020-09-24 21:44:13,956 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 21:44:13,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 3994 states and 4880 transitions.
[2020-09-24 21:44:13,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2020-09-24 21:44:13,972 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:44:13,973 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:13,973 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:44:13,973 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:44:13,973 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:44:13,974 INFO  L82        PathProgramCache]: Analyzing trace with hash 740847210, now seen corresponding path program 1 times
[2020-09-24 21:44:13,974 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:44:13,975 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947162566]
[2020-09-24 21:44:13,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:44:14,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:14,033 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:14,344 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:14,344 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 175
[2020-09-24 21:44:14,345 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:14,345 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 337
[2020-09-24 21:44:14,345 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:14,346 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 21:44:14,346 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 41
[2020-09-24 21:44:14,346 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-09-24 21:44:14,347 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:44:14,436 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:44:14,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:14,441 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:14,451 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:14,452 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 21:44:14,452 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:14,452 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 21:44:14,452 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:14,452 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:44:14,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:44:14,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:44:14,453 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:14,476 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 21:44:14,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:14,482 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:14,495 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:14,495 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 21:44:14,495 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:14,495 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 21:44:14,496 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:14,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:44:14,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:44:14,496 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 21:44:14,496 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:14,506 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-09-24 21:44:14,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:14,525 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:14,587 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:14,587 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 21:44:14,587 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:14,588 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-09-24 21:44:14,588 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:14,588 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 21:44:14,588 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 21:44:14,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 33
[2020-09-24 21:44:14,589 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:14,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 21:44:14,654 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947162566]
[2020-09-24 21:44:14,654 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 21:44:14,655 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 21:44:14,655 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929450399]
[2020-09-24 21:44:14,656 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 21:44:14,656 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:44:14,656 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 21:44:14,657 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-09-24 21:44:14,657 INFO  L87              Difference]: Start difference. First operand 3994 states and 4880 transitions. Second operand 8 states.
[2020-09-24 21:44:17,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:44:17,048 INFO  L93              Difference]: Finished difference Result 8563 states and 10680 transitions.
[2020-09-24 21:44:17,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-24 21:44:17,053 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 162
[2020-09-24 21:44:17,054 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:44:17,077 INFO  L225             Difference]: With dead ends: 8563
[2020-09-24 21:44:17,078 INFO  L226             Difference]: Without dead ends: 4649
[2020-09-24 21:44:17,091 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2020-09-24 21:44:17,096 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4649 states.
[2020-09-24 21:44:17,191 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4480.
[2020-09-24 21:44:17,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4480 states.
[2020-09-24 21:44:17,202 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 5469 transitions.
[2020-09-24 21:44:17,202 INFO  L78                 Accepts]: Start accepts. Automaton has 4480 states and 5469 transitions. Word has length 162
[2020-09-24 21:44:17,203 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:44:17,203 INFO  L479      AbstractCegarLoop]: Abstraction has 4480 states and 5469 transitions.
[2020-09-24 21:44:17,203 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 21:44:17,203 INFO  L276                IsEmpty]: Start isEmpty. Operand 4480 states and 5469 transitions.
[2020-09-24 21:44:17,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2020-09-24 21:44:17,213 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:44:17,213 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:17,214 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 21:44:17,214 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:44:17,214 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:44:17,214 INFO  L82        PathProgramCache]: Analyzing trace with hash 1198067493, now seen corresponding path program 1 times
[2020-09-24 21:44:17,215 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:44:17,215 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182353833]
[2020-09-24 21:44:17,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:44:17,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:17,295 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:17,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:17,838 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:17,838 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 176
[2020-09-24 21:44:17,838 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:44:17,838 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 581
[2020-09-24 21:44:17,839 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:17,839 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 21:44:17,839 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 78
[2020-09-24 21:44:17,839 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 97
[2020-09-24 21:44:17,840 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:44:17,979 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:44:17,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:17,984 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:17,995 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:17,996 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 21:44:17,996 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:17,996 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 21:44:17,996 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:17,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:44:17,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:44:17,997 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:44:17,997 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:18,014 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 21:44:18,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:18,017 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:18,026 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:18,027 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 21:44:18,027 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:18,027 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 21:44:18,027 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:18,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:44:18,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:44:18,028 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:44:18,028 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:18,032 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-09-24 21:44:18,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:18,043 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:18,071 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:44:18,071 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-24 21:44:18,072 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:44:18,072 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-09-24 21:44:18,072 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:44:18,072 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:44:18,072 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:44:18,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 21:44:18,073 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:44:18,111 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2020-09-24 21:44:18,112 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182353833]
[2020-09-24 21:44:18,112 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 21:44:18,113 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 21:44:18,113 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506369388]
[2020-09-24 21:44:18,114 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 21:44:18,114 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:44:18,115 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 21:44:18,116 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 21:44:18,116 INFO  L87              Difference]: Start difference. First operand 4480 states and 5469 transitions. Second operand 5 states.
[2020-09-24 21:44:19,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:44:19,809 INFO  L93              Difference]: Finished difference Result 10256 states and 12833 transitions.
[2020-09-24 21:44:19,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 21:44:19,810 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 163
[2020-09-24 21:44:19,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:44:19,828 INFO  L225             Difference]: With dead ends: 10256
[2020-09-24 21:44:19,828 INFO  L226             Difference]: Without dead ends: 4086
[2020-09-24 21:44:19,845 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 21:44:19,850 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4086 states.
[2020-09-24 21:44:19,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4086 to 4080.
[2020-09-24 21:44:19,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4080 states.
[2020-09-24 21:44:19,947 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 4878 transitions.
[2020-09-24 21:44:19,947 INFO  L78                 Accepts]: Start accepts. Automaton has 4080 states and 4878 transitions. Word has length 163
[2020-09-24 21:44:19,948 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:44:19,948 INFO  L479      AbstractCegarLoop]: Abstraction has 4080 states and 4878 transitions.
[2020-09-24 21:44:19,948 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 21:44:19,948 INFO  L276                IsEmpty]: Start isEmpty. Operand 4080 states and 4878 transitions.
[2020-09-24 21:44:19,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 187
[2020-09-24 21:44:19,959 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:44:19,965 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:19,965 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 21:44:19,966 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:44:19,966 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:44:19,966 INFO  L82        PathProgramCache]: Analyzing trace with hash -1034978868, now seen corresponding path program 1 times
[2020-09-24 21:44:19,966 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:44:19,967 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989297712]
[2020-09-24 21:44:19,967 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:44:19,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:44:20,021 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:20,091 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:20,193 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:20,290 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:20,367 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:44:20,409 FATAL L256   erpolLogProxyWrapper]: Now shrinking...