/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/Problem02_label01.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:32:44,199 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:32:44,203 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:32:44,247 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:32:44,248 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:32:44,255 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:32:44,258 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 20:32:44,264 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:32:44,267 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 20:32:44,268 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 20:32:44,269 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:32:44,272 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:32:44,275 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:32:44,276 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:32:44,278 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:32:44,279 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:32:44,280 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:32:44,291 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:32:44,293 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:32:44,294 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:32:44,296 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:32:44,296 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:32:44,308 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:32:44,309 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:32:44,309 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:32:44,315 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:32:44,316 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:32:44,316 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:32:44,317 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:32:44,317 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:32:44,320 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:32:44,321 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:32:44,326 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:32:44,326 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:32:44,329 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 20:32:44,329 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 20:32:44,329 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 20:32:44,330 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 20:32:44,331 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:32:44,333 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 20:32:44,379 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:32:44,381 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:32:44,382 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:32:44,383 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:32:44,383 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:32:44,383 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:32:44,384 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:32:44,384 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:32:44,384 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:32:44,384 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:32:44,385 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:32:44,386 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:32:44,386 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:32:44,386 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:32:44,387 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:32:44,387 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:32:44,387 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:32:44,387 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:32:44,387 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:32:44,388 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:32:44,388 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:32:44,388 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:32:44,389 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:32:44,389 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:32:44,389 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:32:44,389 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:32:44,389 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:32:44,390 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:32:44,390 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:32:44,390 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 20:32:44,827 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:32:44,850 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:32:44,854 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:32:44,856 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:32:44,856 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:32:44,858 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label01.c
[2020-09-24 20:32:44,942 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd5c41e8f/14dee33896954193925f74a754a673f1/FLAG112645492
[2020-09-24 20:32:45,568 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:32:45,570 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label01.c
[2020-09-24 20:32:45,587 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd5c41e8f/14dee33896954193925f74a754a673f1/FLAG112645492
[2020-09-24 20:32:45,809 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd5c41e8f/14dee33896954193925f74a754a673f1
[2020-09-24 20:32:45,825 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:32:45,831 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:32:45,832 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:32:45,832 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:32:45,838 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:32:45,839 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:32:45" (1/1) ...
[2020-09-24 20:32:45,843 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa97df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:45, skipping insertion in model container
[2020-09-24 20:32:45,844 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:32:45" (1/1) ...
[2020-09-24 20:32:45,852 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:32:45,906 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:32:46,480 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:32:46,492 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:32:46,614 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:32:46,639 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:32:46,640 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46 WrapperNode
[2020-09-24 20:32:46,640 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:32:46,641 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:32:46,641 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:32:46,641 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:32:46,655 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,656 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,680 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,681 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,730 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,745 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,749 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (1/1) ...
[2020-09-24 20:32:46,756 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:32:46,757 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:32:46,757 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:32:46,758 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:32:46,759 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (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 20:32:46,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:32:46,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:32:46,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 20:32:46,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:32:46,853 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 20:32:46,853 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:32:46,853 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 20:32:46,853 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 20:32:46,853 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:32:46,853 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:32:46,854 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:32:48,254 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:32:48,255 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 20:32:48,265 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:32:48 BoogieIcfgContainer
[2020-09-24 20:32:48,265 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:32:48,267 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:32:48,267 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:32:48,271 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:32:48,271 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:32:45" (1/3) ...
[2020-09-24 20:32:48,276 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7fef3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:32:48, skipping insertion in model container
[2020-09-24 20:32:48,276 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:32:46" (2/3) ...
[2020-09-24 20:32:48,276 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7fef3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:32:48, skipping insertion in model container
[2020-09-24 20:32:48,277 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:32:48" (3/3) ...
[2020-09-24 20:32:48,279 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem02_label01.c
[2020-09-24 20:32:48,292 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:32:48,304 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:32:48,328 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:32:48,364 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:32:48,364 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:32:48,364 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:32:48,364 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:32:48,364 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:32:48,365 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:32:48,365 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:32:48,365 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:32:48,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 527 states.
[2020-09-24 20:32:48,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2020-09-24 20:32:48,426 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:32:48,428 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, 1]
[2020-09-24 20:32:48,429 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:32:48,437 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:32:48,438 INFO  L82        PathProgramCache]: Analyzing trace with hash 1587967458, now seen corresponding path program 1 times
[2020-09-24 20:32:48,448 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:32:48,448 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584392990]
[2020-09-24 20:32:48,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:32:48,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:32:48,876 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:49,084 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:49,694 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:50,057 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:51,221 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:52,363 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:52,500 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:52,637 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:53,614 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:53,753 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:53,753 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 148
[2020-09-24 20:32:53,754 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 9
[2020-09-24 20:32:53,754 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5015
[2020-09-24 20:32:53,757 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:53,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-09-24 20:32:53,757 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 20:32:53,758 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 99
[2020-09-24 20:32:53,758 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 20:32:54,386 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35
[2020-09-24 20:32:54,632 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45
[2020-09-24 20:32:54,924 WARN  L193               SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45
[2020-09-24 20:32:55,115 WARN  L193               SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41
[2020-09-24 20:32:55,325 WARN  L193               SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39
[2020-09-24 20:32:55,489 WARN  L193               SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 33
[2020-09-24 20:32:55,721 WARN  L193               SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32
[2020-09-24 20:32:55,904 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 31
[2020-09-24 20:32:56,316 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:32:56,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:32:56,338 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:32:56,401 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:32:56,402 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 20:32:56,402 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:32:56,402 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-24 20:32:56,403 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:32:56,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 20:32:56,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:32:56,404 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 20:32:56,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:32:56,810 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 20:32:56,812 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584392990]
[2020-09-24 20:32:56,815 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:32:56,815 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2020-09-24 20:32:56,817 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614360079]
[2020-09-24 20:32:56,827 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-09-24 20:32:56,828 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:32:56,852 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-09-24 20:32:56,855 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380
[2020-09-24 20:32:56,859 INFO  L87              Difference]: Start difference. First operand 527 states. Second operand 20 states.
[2020-09-24 20:32:57,900 WARN  L193               SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103
[2020-09-24 20:32:58,320 WARN  L193               SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103
[2020-09-24 20:32:58,706 WARN  L193               SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104
[2020-09-24 20:32:59,172 WARN  L193               SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105
[2020-09-24 20:32:59,713 WARN  L193               SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104
[2020-09-24 20:33:00,219 WARN  L193               SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86
[2020-09-24 20:33:00,576 WARN  L193               SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104
[2020-09-24 20:33:00,896 WARN  L193               SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103
[2020-09-24 20:33:01,150 WARN  L193               SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59
[2020-09-24 20:33:01,522 WARN  L193               SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103
[2020-09-24 20:33:01,755 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58
[2020-09-24 20:33:01,969 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56
[2020-09-24 20:33:02,247 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 87
[2020-09-24 20:33:03,245 WARN  L193               SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102
[2020-09-24 20:33:03,504 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86
[2020-09-24 20:33:04,199 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101
[2020-09-24 20:33:04,727 WARN  L193               SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86
[2020-09-24 20:33:05,215 WARN  L193               SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87
[2020-09-24 20:33:05,564 WARN  L193               SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86
[2020-09-24 20:33:06,051 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88
[2020-09-24 20:33:06,392 WARN  L193               SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85
[2020-09-24 20:33:06,838 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87
[2020-09-24 20:33:07,140 WARN  L193               SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87
[2020-09-24 20:33:07,319 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42
[2020-09-24 20:33:07,502 WARN  L193               SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41
[2020-09-24 20:33:08,655 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62
[2020-09-24 20:33:10,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:33:10,204 INFO  L93              Difference]: Finished difference Result 1674 states and 2354 transitions.
[2020-09-24 20:33:10,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. 
[2020-09-24 20:33:10,206 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states. Word has length 139
[2020-09-24 20:33:10,207 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:33:10,236 INFO  L225             Difference]: With dead ends: 1674
[2020-09-24 20:33:10,236 INFO  L226             Difference]: Without dead ends: 1036
[2020-09-24 20:33:10,248 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=943, Invalid=2479, Unknown=0, NotChecked=0, Total=3422
[2020-09-24 20:33:10,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1036 states.
[2020-09-24 20:33:10,377 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 960.
[2020-09-24 20:33:10,379 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 960 states.
[2020-09-24 20:33:10,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1135 transitions.
[2020-09-24 20:33:10,387 INFO  L78                 Accepts]: Start accepts. Automaton has 960 states and 1135 transitions. Word has length 139
[2020-09-24 20:33:10,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:33:10,388 INFO  L479      AbstractCegarLoop]: Abstraction has 960 states and 1135 transitions.
[2020-09-24 20:33:10,388 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-09-24 20:33:10,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 960 states and 1135 transitions.
[2020-09-24 20:33:10,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2020-09-24 20:33:10,401 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:33:10,402 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 20:33:10,402 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:33:10,402 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:33:10,403 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:33:10,403 INFO  L82        PathProgramCache]: Analyzing trace with hash -1311090429, now seen corresponding path program 1 times
[2020-09-24 20:33:10,403 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:33:10,403 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783262592]
[2020-09-24 20:33:10,404 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:33:10,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:10,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:10,578 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:10,955 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:11,095 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:12,559 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:13,944 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:14,105 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:14,294 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:14,852 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:15,452 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:15,534 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:33:15,535 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 174
[2020-09-24 20:33:15,535 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 10
[2020-09-24 20:33:15,535 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5079
[2020-09-24 20:33:15,535 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:33:15,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-09-24 20:33:15,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-24 20:33:15,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 128
[2020-09-24 20:33:15,536 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:33:16,122 WARN  L193               SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37
[2020-09-24 20:33:16,286 WARN  L193               SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37
[2020-09-24 20:33:16,449 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36
[2020-09-24 20:33:16,613 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36
[2020-09-24 20:33:16,766 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33
[2020-09-24 20:33:16,916 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33
[2020-09-24 20:33:17,069 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34
[2020-09-24 20:33:17,228 WARN  L193               SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32
[2020-09-24 20:33:17,652 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:33:17,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:17,665 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:17,695 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:33:17,695 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 20:33:17,695 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:33:17,696 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-09-24 20:33:17,696 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:33:17,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 20:33:17,696 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:33:17,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 20:33:17,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:33:17,747 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 20:33:17,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:17,756 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:17,796 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:17,822 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:33:17,822 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 20
[2020-09-24 20:33:17,823 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 20:33:17,823 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-09-24 20:33:17,823 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:33:17,823 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 20:33:17,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 20:33:17,824 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-24 20:33:17,824 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:33:18,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:33:18,055 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783262592]
[2020-09-24 20:33:18,055 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:33:18,056 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24
[2020-09-24 20:33:18,056 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017874402]
[2020-09-24 20:33:18,058 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-09-24 20:33:18,058 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:33:18,059 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-09-24 20:33:18,059 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552
[2020-09-24 20:33:18,060 INFO  L87              Difference]: Start difference. First operand 960 states and 1135 transitions. Second operand 24 states.
[2020-09-24 20:33:18,407 WARN  L193               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60
[2020-09-24 20:33:18,678 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78
[2020-09-24 20:33:19,284 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73
[2020-09-24 20:33:19,531 WARN  L193               SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80
[2020-09-24 20:33:19,883 WARN  L193               SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84
[2020-09-24 20:33:20,132 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75
[2020-09-24 20:33:20,595 WARN  L193               SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84
[2020-09-24 20:33:21,027 WARN  L193               SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86
[2020-09-24 20:33:21,696 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86
[2020-09-24 20:33:22,468 WARN  L193               SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85
[2020-09-24 20:33:22,684 WARN  L193               SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73
[2020-09-24 20:33:22,901 WARN  L193               SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73
[2020-09-24 20:33:23,183 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80
[2020-09-24 20:33:23,664 WARN  L193               SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85
[2020-09-24 20:33:24,041 WARN  L193               SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86
[2020-09-24 20:33:24,244 WARN  L193               SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68
[2020-09-24 20:33:24,383 WARN  L193               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40
[2020-09-24 20:33:24,752 WARN  L193               SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86
[2020-09-24 20:33:25,807 WARN  L193               SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83
[2020-09-24 20:33:27,703 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81
[2020-09-24 20:33:29,242 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:33:29,243 INFO  L93              Difference]: Finished difference Result 2930 states and 3798 transitions.
[2020-09-24 20:33:29,244 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. 
[2020-09-24 20:33:29,244 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states. Word has length 163
[2020-09-24 20:33:29,247 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:33:29,262 INFO  L225             Difference]: With dead ends: 2930
[2020-09-24 20:33:29,262 INFO  L226             Difference]: Without dead ends: 1831
[2020-09-24 20:33:29,270 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=952, Invalid=2354, Unknown=0, NotChecked=0, Total=3306
[2020-09-24 20:33:29,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1831 states.
[2020-09-24 20:33:29,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1705.
[2020-09-24 20:33:29,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1705 states.
[2020-09-24 20:33:29,380 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2081 transitions.
[2020-09-24 20:33:29,380 INFO  L78                 Accepts]: Start accepts. Automaton has 1705 states and 2081 transitions. Word has length 163
[2020-09-24 20:33:29,382 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:33:29,383 INFO  L479      AbstractCegarLoop]: Abstraction has 1705 states and 2081 transitions.
[2020-09-24 20:33:29,383 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-09-24 20:33:29,383 INFO  L276                IsEmpty]: Start isEmpty. Operand 1705 states and 2081 transitions.
[2020-09-24 20:33:29,393 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2020-09-24 20:33:29,393 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:33:29,393 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:29,394 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:33:29,394 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:33:29,394 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:33:29,394 INFO  L82        PathProgramCache]: Analyzing trace with hash -1889998438, now seen corresponding path program 1 times
[2020-09-24 20:33:29,395 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:33:29,395 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161655095]
[2020-09-24 20:33:29,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:33:29,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:29,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:29,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:29,836 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:29,960 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:30,832 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:31,077 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:34,477 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:33:34,479 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 188
[2020-09-24 20:33:34,479 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 20:33:34,479 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5024
[2020-09-24 20:33:34,479 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:33:34,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-24 20:33:34,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 57
[2020-09-24 20:33:34,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 101
[2020-09-24 20:33:34,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 9
[2020-09-24 20:33:34,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:33:34,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:34,767 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:34,777 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:33:34,778 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 20:33:34,778 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:33:34,778 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 20:33:34,778 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:33:34,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:33:34,779 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:33:34,779 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:33:34,779 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:33:34,796 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 20:33:34,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:34,817 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:34,935 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:33:34,935 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 20:33:34,935 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:33:34,936 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 125
[2020-09-24 20:33:34,936 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:33:34,936 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 20:33:34,936 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:33:34,936 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-24 20:33:34,937 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 20:33:35,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:33:35,212 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161655095]
[2020-09-24 20:33:35,212 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:33:35,213 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 20:33:35,213 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015282196]
[2020-09-24 20:33:35,213 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 20:33:35,214 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:33:35,214 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 20:33:35,215 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-09-24 20:33:35,215 INFO  L87              Difference]: Start difference. First operand 1705 states and 2081 transitions. Second operand 10 states.
[2020-09-24 20:33:38,498 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:33:38,499 INFO  L93              Difference]: Finished difference Result 2826 states and 3598 transitions.
[2020-09-24 20:33:38,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-24 20:33:38,501 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 177
[2020-09-24 20:33:38,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:33:38,509 INFO  L225             Difference]: With dead ends: 2826
[2020-09-24 20:33:38,510 INFO  L226             Difference]: Without dead ends: 1385
[2020-09-24 20:33:38,515 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210
[2020-09-24 20:33:38,517 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1385 states.
[2020-09-24 20:33:38,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1226.
[2020-09-24 20:33:38,545 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1226 states.
[2020-09-24 20:33:38,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1398 transitions.
[2020-09-24 20:33:38,550 INFO  L78                 Accepts]: Start accepts. Automaton has 1226 states and 1398 transitions. Word has length 177
[2020-09-24 20:33:38,550 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:33:38,550 INFO  L479      AbstractCegarLoop]: Abstraction has 1226 states and 1398 transitions.
[2020-09-24 20:33:38,550 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 20:33:38,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 1226 states and 1398 transitions.
[2020-09-24 20:33:38,555 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 191
[2020-09-24 20:33:38,555 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:33:38,556 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:38,556 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 20:33:38,556 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:33:38,556 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:33:38,557 INFO  L82        PathProgramCache]: Analyzing trace with hash -378615506, now seen corresponding path program 1 times
[2020-09-24 20:33:38,557 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:33:38,557 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849919964]
[2020-09-24 20:33:38,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:33:38,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:33:38,611 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:38,668 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:38,948 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:33:38,995 FATAL L256   erpolLogProxyWrapper]: Now shrinking...