/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=BIGGEST --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/Problem01_label41.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:31:44,418 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:31:44,421 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:31:44,448 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:31:44,448 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:31:44,449 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:31:44,451 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 20:31:44,454 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:31:44,455 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 20:31:44,458 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:31:44,459 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:31:44,460 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:31:44,461 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:31:44,462 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:31:44,463 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:31:44,465 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:31:44,467 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:31:44,469 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:31:44,470 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:31:44,471 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:31:44,472 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:31:44,475 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:31:44,475 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:31:44,475 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:31:44,477 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:31:44,477 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:31:44,478 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:31:44,478 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:31:44,479 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:31:44,480 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:31:44,481 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:31:44,482 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:31:44,482 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:31:44,483 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 20:31:44,483 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 20:31:44,484 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 20:31:44,485 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:31:44,486 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 20:31:44,522 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:31:44,523 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:31:44,526 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:31:44,526 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:31:44,527 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:31:44,527 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:31:44,528 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:31:44,528 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:31:44,528 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:31:44,528 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:31:44,528 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:31:44,530 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:31:44,530 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:31:44,530 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:31:44,530 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:31:44,531 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:31:44,531 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:31:44,531 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:31:44,531 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:31:44,531 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:31:44,532 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:31:44,533 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:31:44,533 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:31:44,533 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:31:44,534 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:31:44,534 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:31:44,534 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:31:44,534 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:31:44,534 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:31:44,535 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;
[2020-09-24 20:31:44,981 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:31:45,007 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:31:45,012 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:31:45,016 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:31:45,017 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:31:45,019 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c
[2020-09-24 20:31:45,106 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b722bf8/fda6c8fe389241c0a56cb7ab0ad69413/FLAG681bbd817
[2020-09-24 20:31:45,796 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:31:45,797 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c
[2020-09-24 20:31:45,818 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b722bf8/fda6c8fe389241c0a56cb7ab0ad69413/FLAG681bbd817
[2020-09-24 20:31:46,015 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b722bf8/fda6c8fe389241c0a56cb7ab0ad69413
[2020-09-24 20:31:46,030 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:31:46,037 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:31:46,038 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:31:46,038 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:31:46,044 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:31:46,045 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:46,051 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5402282b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46, skipping insertion in model container
[2020-09-24 20:31:46,052 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:46,063 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:31:46,131 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:31:46,588 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:31:46,595 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:31:46,851 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:31:46,875 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:31:46,876 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46 WrapperNode
[2020-09-24 20:31:46,878 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:31:46,879 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:31:46,879 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:31:46,879 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:31:46,908 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:46,910 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:46,961 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:46,961 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:47,011 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:47,023 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:47,028 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (1/1) ...
[2020-09-24 20:31:47,035 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:31:47,036 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:31:47,036 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:31:47,037 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:31:47,038 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (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 20:31:47,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:31:47,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:31:47,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 20:31:47,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:31:47,159 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 20:31:47,160 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:31:47,160 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 20:31:47,160 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 20:31:47,160 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:31:47,161 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:31:47,161 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:31:48,879 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:31:48,880 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 20:31:48,889 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:48 BoogieIcfgContainer
[2020-09-24 20:31:48,889 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:31:48,890 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:31:48,890 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:31:48,894 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:31:48,895 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:31:46" (1/3) ...
[2020-09-24 20:31:48,896 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebc44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:48, skipping insertion in model container
[2020-09-24 20:31:48,896 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:46" (2/3) ...
[2020-09-24 20:31:48,897 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebc44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:48, skipping insertion in model container
[2020-09-24 20:31:48,897 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:48" (3/3) ...
[2020-09-24 20:31:48,899 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem01_label41.c
[2020-09-24 20:31:48,911 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:31:48,923 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:31:48,947 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:31:48,983 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:31:48,984 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:31:48,984 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:31:48,984 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:31:48,984 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:31:48,984 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:31:48,985 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:31:48,985 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:31:49,018 INFO  L276                IsEmpty]: Start isEmpty. Operand 525 states.
[2020-09-24 20:31:49,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 114
[2020-09-24 20:31:49,038 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:31:49,039 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:31:49,040 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:31:49,048 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:31:49,048 INFO  L82        PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times
[2020-09-24 20:31:49,059 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:31:49,060 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417672838]
[2020-09-24 20:31:49,060 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:31:49,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:31:49,430 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:49,664 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:49,874 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:50,925 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:51,544 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:53,369 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:53,792 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:54,331 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:31:54,331 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 122
[2020-09-24 20:31:54,332 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-24 20:31:54,332 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5018
[2020-09-24 20:31:54,336 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:31:54,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 36
[2020-09-24 20:31:54,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-24 20:31:54,337 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 84
[2020-09-24 20:31:54,338 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 20:31:55,236 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37
[2020-09-24 20:31:55,379 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37
[2020-09-24 20:31:55,654 WARN  L193               SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47
[2020-09-24 20:31:55,895 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47
[2020-09-24 20:31:56,094 WARN  L193               SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43
[2020-09-24 20:31:56,301 WARN  L193               SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43
[2020-09-24 20:31:56,596 WARN  L193               SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48
[2020-09-24 20:31:56,887 WARN  L193               SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47
[2020-09-24 20:31:57,149 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46
[2020-09-24 20:31:57,424 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45
[2020-09-24 20:31:57,657 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44
[2020-09-24 20:31:57,895 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43
[2020-09-24 20:31:58,163 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43
[2020-09-24 20:31:58,371 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42
[2020-09-24 20:31:58,599 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40
[2020-09-24 20:31:58,823 WARN  L193               SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41
[2020-09-24 20:31:58,997 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36
[2020-09-24 20:31:59,373 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32
[2020-09-24 20:31:59,938 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:31:59,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:31:59,957 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:00,053 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:00,053 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 20:32:00,054 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:32:00,054 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 103
[2020-09-24 20:32:00,054 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:00,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 20:32:00,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:32:00,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 20:32:00,055 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:32:00,451 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 20:32:00,452 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417672838]
[2020-09-24 20:32:00,454 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:32:00,454 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2020-09-24 20:32:00,455 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877820584]
[2020-09-24 20:32:00,461 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 35 states
[2020-09-24 20:32:00,461 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:32:00,478 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2020-09-24 20:32:00,480 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=810, Unknown=0, NotChecked=0, Total=1190
[2020-09-24 20:32:00,483 INFO  L87              Difference]: Start difference. First operand 525 states. Second operand 35 states.
[2020-09-24 20:32:00,972 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80
[2020-09-24 20:32:01,185 WARN  L193               SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80
[2020-09-24 20:32:01,451 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88
[2020-09-24 20:32:01,821 WARN  L193               SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93
[2020-09-24 20:32:01,977 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43
[2020-09-24 20:32:02,303 WARN  L193               SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93
[2020-09-24 20:32:02,810 WARN  L193               SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98
[2020-09-24 20:32:03,328 WARN  L193               SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:03,728 WARN  L193               SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-09-24 20:32:04,200 WARN  L193               SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-09-24 20:32:04,601 WARN  L193               SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:05,162 WARN  L193               SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:05,842 WARN  L193               SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:06,022 WARN  L193               SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43
[2020-09-24 20:32:06,424 WARN  L193               SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:06,644 WARN  L193               SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46
[2020-09-24 20:32:07,055 WARN  L193               SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:07,576 WARN  L193               SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:08,053 WARN  L193               SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:08,281 WARN  L193               SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-09-24 20:32:08,627 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85
[2020-09-24 20:32:08,915 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2020-09-24 20:32:09,329 WARN  L193               SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:32:09,799 WARN  L193               SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:10,118 WARN  L193               SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98
[2020-09-24 20:32:10,682 WARN  L193               SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80
[2020-09-24 20:32:11,029 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88
[2020-09-24 20:32:11,377 WARN  L193               SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98
[2020-09-24 20:32:11,568 WARN  L193               SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-09-24 20:32:12,036 WARN  L193               SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92
[2020-09-24 20:32:12,347 WARN  L193               SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85
[2020-09-24 20:32:12,579 WARN  L193               SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-09-24 20:32:12,955 WARN  L193               SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:13,324 WARN  L193               SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90
[2020-09-24 20:32:13,834 WARN  L193               SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89
[2020-09-24 20:32:14,186 WARN  L193               SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:14,424 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49
[2020-09-24 20:32:14,783 WARN  L193               SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90
[2020-09-24 20:32:14,916 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35
[2020-09-24 20:32:15,306 WARN  L193               SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:15,637 WARN  L193               SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88
[2020-09-24 20:32:15,945 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84
[2020-09-24 20:32:16,269 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85
[2020-09-24 20:32:16,791 WARN  L193               SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88
[2020-09-24 20:32:16,949 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2020-09-24 20:32:17,136 WARN  L193               SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-09-24 20:32:17,354 WARN  L193               SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 93
[2020-09-24 20:32:17,741 WARN  L193               SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 93
[2020-09-24 20:32:18,106 WARN  L193               SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-09-24 20:32:18,325 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 83
[2020-09-24 20:32:18,667 WARN  L193               SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:18,937 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:19,101 WARN  L193               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82
[2020-09-24 20:32:19,264 WARN  L193               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38
[2020-09-24 20:32:19,680 WARN  L193               SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:19,905 WARN  L193               SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:20,228 WARN  L193               SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 96
[2020-09-24 20:32:20,630 WARN  L193               SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:21,258 WARN  L193               SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:21,523 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83
[2020-09-24 20:32:21,714 WARN  L193               SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96
[2020-09-24 20:32:22,134 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82
[2020-09-24 20:32:22,494 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:23,208 WARN  L193               SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91
[2020-09-24 20:32:23,493 WARN  L193               SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79
[2020-09-24 20:32:23,784 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77
[2020-09-24 20:32:23,996 WARN  L193               SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:24,216 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72
[2020-09-24 20:32:24,468 WARN  L193               SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73
[2020-09-24 20:32:24,690 WARN  L193               SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:25,033 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:25,404 WARN  L193               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:25,742 WARN  L193               SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89
[2020-09-24 20:32:26,129 WARN  L193               SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89
[2020-09-24 20:32:26,380 WARN  L193               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:26,669 WARN  L193               SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:27,102 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80
[2020-09-24 20:32:27,324 WARN  L193               SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41
[2020-09-24 20:32:27,581 WARN  L193               SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 20:32:27,851 WARN  L193               SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-09-24 20:32:28,240 WARN  L193               SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-09-24 20:32:28,473 WARN  L193               SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 92
[2020-09-24 20:32:28,733 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-09-24 20:32:28,948 WARN  L193               SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 90
[2020-09-24 20:32:29,271 WARN  L193               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89
[2020-09-24 20:32:29,443 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2020-09-24 20:32:29,706 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2020-09-24 20:32:30,102 WARN  L193               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85
[2020-09-24 20:32:31,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:32:31,360 INFO  L93              Difference]: Finished difference Result 1967 states and 2792 transitions.
[2020-09-24 20:32:31,360 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. 
[2020-09-24 20:32:31,362 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states. Word has length 113
[2020-09-24 20:32:31,363 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:32:31,401 INFO  L225             Difference]: With dead ends: 1967
[2020-09-24 20:32:31,401 INFO  L226             Difference]: Without dead ends: 1349
[2020-09-24 20:32:31,421 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7128 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=5030, Invalid=14992, Unknown=0, NotChecked=0, Total=20022
[2020-09-24 20:32:31,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1349 states.
[2020-09-24 20:32:31,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1147.
[2020-09-24 20:32:31,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1147 states.
[2020-09-24 20:32:31,571 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1395 transitions.
[2020-09-24 20:32:31,573 INFO  L78                 Accepts]: Start accepts. Automaton has 1147 states and 1395 transitions. Word has length 113
[2020-09-24 20:32:31,574 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:32:31,574 INFO  L479      AbstractCegarLoop]: Abstraction has 1147 states and 1395 transitions.
[2020-09-24 20:32:31,575 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 35 states.
[2020-09-24 20:32:31,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 1147 states and 1395 transitions.
[2020-09-24 20:32:31,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2020-09-24 20:32:31,595 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:32:31,596 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-09-24 20:32:31,596 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:32:31,598 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:32:31,598 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:32:31,598 INFO  L82        PathProgramCache]: Analyzing trace with hash 1425470158, now seen corresponding path program 1 times
[2020-09-24 20:32:31,599 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:32:31,599 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863697497]
[2020-09-24 20:32:31,599 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:32:31,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:32:31,698 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:31,824 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:31,917 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:33,259 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:33,260 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 145
[2020-09-24 20:32:33,260 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 20:32:33,260 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1605
[2020-09-24 20:32:33,261 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:33,261 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 20:32:33,261 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 20:32:33,262 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 124
[2020-09-24 20:32:33,262 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:32:33,486 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:32:33,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:32:33,499 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:33,525 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:33,525 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 20:32:33,526 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:32:33,526 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-24 20:32:33,526 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:33,526 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:32:33,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:32:33,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-24 20:32:33,527 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:32:33,555 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-09-24 20:32:33,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:32:33,566 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:33,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:33,630 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:33,630 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-09-24 20:32:33,631 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:32:33,631 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 67
[2020-09-24 20:32:33,631 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:33,631 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 20:32:33,631 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:32:33,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-24 20:32:33,632 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:32:33,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-24 20:32:33,689 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863697497]
[2020-09-24 20:32:33,689 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:32:33,690 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-24 20:32:33,690 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651179979]
[2020-09-24 20:32:33,692 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 20:32:33,692 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:32:33,692 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 20:32:33,693 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-09-24 20:32:33,693 INFO  L87              Difference]: Start difference. First operand 1147 states and 1395 transitions. Second operand 6 states.
[2020-09-24 20:32:35,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:32:35,462 INFO  L93              Difference]: Finished difference Result 3183 states and 4047 transitions.
[2020-09-24 20:32:35,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 20:32:35,462 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 134
[2020-09-24 20:32:35,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:32:35,477 INFO  L225             Difference]: With dead ends: 3183
[2020-09-24 20:32:35,478 INFO  L226             Difference]: Without dead ends: 2048
[2020-09-24 20:32:35,484 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-09-24 20:32:35,487 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2048 states.
[2020-09-24 20:32:35,544 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1827.
[2020-09-24 20:32:35,544 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1827 states.
[2020-09-24 20:32:35,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2217 transitions.
[2020-09-24 20:32:35,554 INFO  L78                 Accepts]: Start accepts. Automaton has 1827 states and 2217 transitions. Word has length 134
[2020-09-24 20:32:35,555 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:32:35,555 INFO  L479      AbstractCegarLoop]: Abstraction has 1827 states and 2217 transitions.
[2020-09-24 20:32:35,555 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 20:32:35,555 INFO  L276                IsEmpty]: Start isEmpty. Operand 1827 states and 2217 transitions.
[2020-09-24 20:32:35,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2020-09-24 20:32:35,563 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:32:35,563 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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]
[2020-09-24 20:32:35,564 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:32:35,564 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:32:35,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:32:35,564 INFO  L82        PathProgramCache]: Analyzing trace with hash 229978703, now seen corresponding path program 1 times
[2020-09-24 20:32:35,564 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:32:35,565 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673323144]
[2020-09-24 20:32:35,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:32:35,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:32:35,628 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:35,844 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:36,222 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:37,619 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:37,680 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:40,474 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:40,574 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:40,637 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:40,638 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 164
[2020-09-24 20:32:40,638 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-24 20:32:40,638 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5037
[2020-09-24 20:32:40,638 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:40,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-24 20:32:40,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 64
[2020-09-24 20:32:40,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 81
[2020-09-24 20:32:40,641 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2