/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_label10.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:30:44,158 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:30:44,163 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:30:44,211 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:30:44,212 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:30:44,222 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:30:44,225 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 20:30:44,234 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 20:30:44,238 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:30:44,241 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:30:44,244 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:30:44,246 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:30:44,248 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:30:44,249 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:30:44,251 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:30:44,259 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:30:44,262 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:30:44,263 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:30:44,266 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:30:44,266 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:30:44,271 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:30:44,271 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:30:44,272 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:30:44,274 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:30:44,275 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:30:44,276 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:30:44,276 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:30:44,277 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:30:44,278 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:30:44,279 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:30:44,280 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:30:44,280 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 20:30:44,282 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 20:30:44,283 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 20:30:44,284 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:30:44,285 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 20:30:44,336 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:30:44,336 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:30:44,339 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:30:44,339 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:30:44,339 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:30:44,339 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:30:44,340 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:30:44,340 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:30:44,340 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:30:44,341 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:30:44,342 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:30:44,342 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:30:44,342 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:30:44,343 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:30:44,343 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:30:44,343 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:30:44,343 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:30:44,343 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:30:44,344 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:30:44,344 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:30:44,344 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:30:44,344 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:30:44,344 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:30:44,345 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:30:44,345 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:30:44,345 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:30:44,345 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:30:44,345 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:30:44,346 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:30:44,346 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 20:30:44,789 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:30:44,807 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:30:44,812 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:30:44,814 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:30:44,814 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:30:44,815 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c
[2020-09-24 20:30:44,900 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/936611faa/cfa273a05e1b4aa69bc30c5ecf7f54c5/FLAGbdbbee5dc
[2020-09-24 20:30:45,551 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:30:45,552 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c
[2020-09-24 20:30:45,570 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/936611faa/cfa273a05e1b4aa69bc30c5ecf7f54c5/FLAGbdbbee5dc
[2020-09-24 20:30:45,807 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/936611faa/cfa273a05e1b4aa69bc30c5ecf7f54c5
[2020-09-24 20:30:45,821 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:30:45,827 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:30:45,828 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:30:45,829 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:30:45,833 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:30:45,834 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:30:45" (1/1) ...
[2020-09-24 20:30:45,839 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:45, skipping insertion in model container
[2020-09-24 20:30:45,839 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:30:45" (1/1) ...
[2020-09-24 20:30:45,849 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:30:45,917 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:30:46,393 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:30:46,410 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:30:46,684 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:30:46,712 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:30:46,715 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46 WrapperNode
[2020-09-24 20:30:46,715 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:30:46,716 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:30:46,716 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:30:46,716 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:30:46,736 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,738 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,770 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,772 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,819 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,847 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,856 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ...
[2020-09-24 20:30:46,863 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:30:46,864 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:30:46,864 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:30:46,864 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:30:46,865 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (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 20:30:46,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:30:46,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:30:46,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 20:30:46,947 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:30:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 20:30:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:30:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 20:30:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 20:30:46,947 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:30:46,948 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:30:46,948 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:30:48,369 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:30:48,369 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 20:30:48,379 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:30:48 BoogieIcfgContainer
[2020-09-24 20:30:48,379 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:30:48,381 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:30:48,381 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:30:48,385 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:30:48,386 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:30:45" (1/3) ...
[2020-09-24 20:30:48,387 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:30:48, skipping insertion in model container
[2020-09-24 20:30:48,387 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (2/3) ...
[2020-09-24 20:30:48,388 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:30:48, skipping insertion in model container
[2020-09-24 20:30:48,388 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:30:48" (3/3) ...
[2020-09-24 20:30:48,390 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem01_label10.c
[2020-09-24 20:30:48,403 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:30:48,415 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:30:48,439 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:30:48,479 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:30:48,479 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:30:48,480 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:30:48,480 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:30:48,480 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:30:48,480 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:30:48,480 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:30:48,480 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:30:48,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 525 states.
[2020-09-24 20:30:48,539 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2020-09-24 20:30:48,539 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:30:48,541 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:30:48,542 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:30:48,549 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:30:48,550 INFO  L82        PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times
[2020-09-24 20:30:48,560 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:30:48,560 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075]
[2020-09-24 20:30:48,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:30:48,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:30:48,929 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:30:49,377 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:30:50,046 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:30:50,409 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:30:52,541 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:30:53,830 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:30:53,830 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 147
[2020-09-24 20:30:53,831 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 20:30:53,831 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5007
[2020-09-24 20:30:53,834 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:30:53,836 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 36
[2020-09-24 20:30:53,836 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-24 20:30:53,836 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 84
[2020-09-24 20:30:53,836 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 20:30:55,032 WARN  L193               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41
[2020-09-24 20:30:55,364 WARN  L193               SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51
[2020-09-24 20:30:55,740 WARN  L193               SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50
[2020-09-24 20:30:56,211 WARN  L193               SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59
[2020-09-24 20:30:56,736 WARN  L193               SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56
[2020-09-24 20:30:57,215 WARN  L193               SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54
[2020-09-24 20:30:57,683 WARN  L193               SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55
[2020-09-24 20:30:58,175 WARN  L193               SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54
[2020-09-24 20:30:58,567 WARN  L193               SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56
[2020-09-24 20:30:59,141 WARN  L193               SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56
[2020-09-24 20:30:59,717 WARN  L193               SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56
[2020-09-24 20:31:00,182 WARN  L193               SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60
[2020-09-24 20:31:00,638 WARN  L193               SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60
[2020-09-24 20:31:01,098 WARN  L193               SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60
[2020-09-24 20:31:01,609 WARN  L193               SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51
[2020-09-24 20:31:02,085 WARN  L193               SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55
[2020-09-24 20:31:02,600 WARN  L193               SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51
[2020-09-24 20:31:02,969 WARN  L193               SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49
[2020-09-24 20:31:03,434 WARN  L193               SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41
[2020-09-24 20:31:03,737 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41
[2020-09-24 20:31:04,023 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36
[2020-09-24 20:31:04,272 WARN  L193               SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35
[2020-09-24 20:31:04,469 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 24
[2020-09-24 20:31:04,677 WARN  L193               SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 27
[2020-09-24 20:31:04,777 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:31:04,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:31:04,812 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:04,898 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:31:04,898 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 20:31:04,899 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:31:04,899 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 97
[2020-09-24 20:31:04,900 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:31:04,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 20:31:04,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:31:04,900 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 20:31:04,900 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:31:05,395 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 20:31:05,396 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075]
[2020-09-24 20:31:05,398 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:31:05,398 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35
[2020-09-24 20:31:05,399 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408740142]
[2020-09-24 20:31:05,405 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 35 states
[2020-09-24 20:31:05,405 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:31:05,419 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2020-09-24 20:31:05,421 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=810, Unknown=0, NotChecked=0, Total=1190
[2020-09-24 20:31:05,423 INFO  L87              Difference]: Start difference. First operand 525 states. Second operand 35 states.
[2020-09-24 20:31:05,937 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82
[2020-09-24 20:31:06,158 WARN  L193               SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82
[2020-09-24 20:31:06,472 WARN  L193               SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-09-24 20:31:06,844 WARN  L193               SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109
[2020-09-24 20:31:07,097 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57
[2020-09-24 20:31:07,539 WARN  L193               SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107
[2020-09-24 20:31:08,161 WARN  L193               SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117
[2020-09-24 20:31:08,703 WARN  L193               SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113
[2020-09-24 20:31:09,134 WARN  L193               SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112
[2020-09-24 20:31:09,300 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50
[2020-09-24 20:31:09,775 WARN  L193               SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111
[2020-09-24 20:31:10,282 WARN  L193               SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 110
[2020-09-24 20:31:10,902 WARN  L193               SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113
[2020-09-24 20:31:11,127 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-09-24 20:31:11,712 WARN  L193               SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112
[2020-09-24 20:31:11,938 WARN  L193               SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59
[2020-09-24 20:31:12,421 WARN  L193               SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112
[2020-09-24 20:31:12,725 WARN  L193               SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61
[2020-09-24 20:31:13,417 WARN  L193               SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114
[2020-09-24 20:31:14,258 WARN  L193               SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114
[2020-09-24 20:31:15,096 WARN  L193               SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111
[2020-09-24 20:31:15,330 WARN  L193               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 104
[2020-09-24 20:31:15,736 WARN  L193               SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97
[2020-09-24 20:31:16,202 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-09-24 20:31:16,685 WARN  L193               SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109
[2020-09-24 20:31:17,224 WARN  L193               SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103
[2020-09-24 20:31:17,638 WARN  L193               SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114
[2020-09-24 20:31:18,279 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92
[2020-09-24 20:31:18,698 WARN  L193               SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101
[2020-09-24 20:31:19,112 WARN  L193               SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109
[2020-09-24 20:31:19,325 WARN  L193               SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 104
[2020-09-24 20:31:19,512 WARN  L193               SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47
[2020-09-24 20:31:19,914 WARN  L193               SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106
[2020-09-24 20:31:20,231 WARN  L193               SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:31:20,505 WARN  L193               SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-09-24 20:31:20,916 WARN  L193               SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:31:21,337 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100
[2020-09-24 20:31:21,910 WARN  L193               SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95
[2020-09-24 20:31:22,302 WARN  L193               SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103
[2020-09-24 20:31:22,586 WARN  L193               SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63
[2020-09-24 20:31:23,022 WARN  L193               SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107
[2020-09-24 20:31:23,173 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49
[2020-09-24 20:31:23,621 WARN  L193               SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-09-24 20:31:23,957 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95
[2020-09-24 20:31:24,285 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87
[2020-09-24 20:31:24,635 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88
[2020-09-24 20:31:25,196 WARN  L193               SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-09-24 20:31:25,393 WARN  L193               SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-09-24 20:31:25,742 WARN  L193               SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 100
[2020-09-24 20:31:25,962 WARN  L193               SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 110
[2020-09-24 20:31:26,415 WARN  L193               SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 108
[2020-09-24 20:31:26,812 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-24 20:31:27,041 WARN  L193               SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97
[2020-09-24 20:31:27,423 WARN  L193               SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100
[2020-09-24 20:31:27,779 WARN  L193               SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:31:27,956 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90
[2020-09-24 20:31:28,195 WARN  L193               SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51
[2020-09-24 20:31:28,694 WARN  L193               SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-09-24 20:31:28,969 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 114
[2020-09-24 20:31:29,338 WARN  L193               SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-09-24 20:31:29,958 WARN  L193               SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104
[2020-09-24 20:31:30,904 WARN  L193               SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104
[2020-09-24 20:31:31,219 WARN  L193               SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-09-24 20:31:31,624 WARN  L193               SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112
[2020-09-24 20:31:32,114 WARN  L193               SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89
[2020-09-24 20:31:32,513 WARN  L193               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 110
[2020-09-24 20:31:33,530 WARN  L193               SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101
[2020-09-24 20:31:33,829 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84
[2020-09-24 20:31:34,130 WARN  L193               SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83
[2020-09-24 20:31:34,372 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 114
[2020-09-24 20:31:34,606 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73
[2020-09-24 20:31:34,887 WARN  L193               SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74
[2020-09-24 20:31:35,160 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-09-24 20:31:35,552 WARN  L193               SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-09-24 20:31:35,865 WARN  L193               SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62
[2020-09-24 20:31:36,538 WARN  L193               SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115
[2020-09-24 20:31:36,913 WARN  L193               SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104
[2020-09-24 20:31:37,320 WARN  L193               SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-09-24 20:31:38,035 WARN  L193               SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115
[2020-09-24 20:31:38,810 WARN  L193               SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112
[2020-09-24 20:31:39,283 WARN  L193               SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89
[2020-09-24 20:31:39,543 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53
[2020-09-24 20:31:40,006 WARN  L193               SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110
[2020-09-24 20:31:40,327 WARN  L193               SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-09-24 20:31:40,749 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 110
[2020-09-24 20:31:41,015 WARN  L193               SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2020-09-24 20:31:41,328 WARN  L193               SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2020-09-24 20:31:41,588 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-09-24 20:31:41,968 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 96
[2020-09-24 20:31:42,161 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-09-24 20:31:42,444 WARN  L193               SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 96
[2020-09-24 20:31:42,665 WARN  L193               SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2020-09-24 20:31:42,893 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 89
[2020-09-24 20:31:44,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:31:44,260 INFO  L93              Difference]: Finished difference Result 1966 states and 2791 transitions.
[2020-09-24 20:31:44,261 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. 
[2020-09-24 20:31:44,263 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states. Word has length 138
[2020-09-24 20:31:44,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:31:44,294 INFO  L225             Difference]: With dead ends: 1966
[2020-09-24 20:31:44,294 INFO  L226             Difference]: Without dead ends: 1347
[2020-09-24 20:31:44,316 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7128 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=5030, Invalid=14992, Unknown=0, NotChecked=0, Total=20022
[2020-09-24 20:31:44,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1347 states.
[2020-09-24 20:31:44,454 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1006.
[2020-09-24 20:31:44,456 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1006 states.
[2020-09-24 20:31:44,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1200 transitions.
[2020-09-24 20:31:44,464 INFO  L78                 Accepts]: Start accepts. Automaton has 1006 states and 1200 transitions. Word has length 138
[2020-09-24 20:31:44,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:31:44,465 INFO  L479      AbstractCegarLoop]: Abstraction has 1006 states and 1200 transitions.
[2020-09-24 20:31:44,465 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 35 states.
[2020-09-24 20:31:44,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 1006 states and 1200 transitions.
[2020-09-24 20:31:44,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2020-09-24 20:31:44,475 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:31:44,476 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, 1, 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 20:31:44,476 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:31:44,476 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:31:44,477 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:31:44,477 INFO  L82        PathProgramCache]: Analyzing trace with hash -993304122, now seen corresponding path program 1 times
[2020-09-24 20:31:44,477 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:31:44,477 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874022766]
[2020-09-24 20:31:44,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:31:44,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:31:44,612 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:44,702 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:44,819 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:31:44,934 FATAL L256   erpolLogProxyWrapper]: Now shrinking...