/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=SMALLEST --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/Problem10_label52.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:25:36,306 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:25:36,310 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:25:36,336 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:25:36,337 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:25:36,338 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:25:36,340 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 18:25:36,342 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 18:25:36,344 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 18:25:36,345 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 18:25:36,346 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 18:25:36,347 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 18:25:36,348 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:25:36,349 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:25:36,350 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:25:36,352 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:25:36,353 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:25:36,354 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:25:36,355 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:25:36,357 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:25:36,359 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:25:36,360 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:25:36,361 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:25:36,362 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:25:36,365 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:25:36,365 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:25:36,365 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:25:36,366 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:25:36,367 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:25:36,368 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:25:36,368 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:25:36,369 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:25:36,370 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:25:36,371 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:25:36,372 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:25:36,372 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 18:25:36,373 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 18:25:36,373 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 18:25:36,374 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 18:25:36,375 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 18:25:36,375 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:25:36,376 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 18:25:36,424 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 18:25:36,425 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:25:36,427 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:25:36,427 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 18:25:36,427 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 18:25:36,427 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:25:36,428 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 18:25:36,428 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 18:25:36,429 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 18:25:36,429 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 18:25:36,430 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:25:36,430 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:25:36,430 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:25:36,431 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 18:25:36,432 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 18:25:36,432 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 18:25:36,432 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:25:36,432 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:25:36,433 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 18:25:36,433 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 18:25:36,433 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 18:25:36,433 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:25:36,433 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:25:36,434 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:25:36,434 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:25:36,434 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 18:25:36,434 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:25:36,434 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:25:36,435 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 18:25:36,435 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true;
[2020-09-24 18:25:36,969 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:25:36,988 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:25:36,992 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:25:36,995 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 18:25:36,996 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 18:25:36,997 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c
[2020-09-24 18:25:37,078 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd5e92f60/62184f16182240aabc1a160d731cc48c/FLAGbda0938b2
[2020-09-24 18:25:37,709 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 18:25:37,712 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c
[2020-09-24 18:25:37,733 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd5e92f60/62184f16182240aabc1a160d731cc48c/FLAGbda0938b2
[2020-09-24 18:25:37,939 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd5e92f60/62184f16182240aabc1a160d731cc48c
[2020-09-24 18:25:37,955 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:25:37,961 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:25:37,962 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:25:37,963 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:25:37,967 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:25:37,968 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:37" (1/1) ...
[2020-09-24 18:25:37,972 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:37, skipping insertion in model container
[2020-09-24 18:25:37,972 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:37" (1/1) ...
[2020-09-24 18:25:37,982 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 18:25:38,056 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:25:38,563 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:25:38,571 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 18:25:38,819 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:25:38,839 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 18:25:38,839 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38 WrapperNode
[2020-09-24 18:25:38,840 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:25:38,841 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:25:38,841 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:25:38,841 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:25:38,866 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,867 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,887 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,887 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,924 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,943 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,950 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (1/1) ...
[2020-09-24 18:25:38,958 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:25:38,959 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:25:38,959 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:25:38,959 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:25:38,961 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (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 18:25:39,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:25:39,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:25:39,066 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 18:25:39,067 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:25:39,067 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 18:25:39,067 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:25:39,067 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:25:39,067 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 18:25:39,069 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:25:39,069 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:25:39,070 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:25:40,591 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:25:40,592 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 18:25:40,601 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:40 BoogieIcfgContainer
[2020-09-24 18:25:40,601 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:25:40,603 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:25:40,603 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:25:40,607 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:25:40,607 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:37" (1/3) ...
[2020-09-24 18:25:40,608 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:40, skipping insertion in model container
[2020-09-24 18:25:40,609 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:38" (2/3) ...
[2020-09-24 18:25:40,609 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:40, skipping insertion in model container
[2020-09-24 18:25:40,609 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:40" (3/3) ...
[2020-09-24 18:25:40,612 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label52.c
[2020-09-24 18:25:40,624 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:25:40,635 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:25:40,657 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:25:40,690 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:25:40,691 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 18:25:40,691 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:25:40,691 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:25:40,691 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:25:40,691 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 18:25:40,692 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:25:40,692 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:25:40,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 456 states.
[2020-09-24 18:25:40,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-09-24 18:25:40,732 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:25:40,733 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]
[2020-09-24 18:25:40,734 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:25:40,741 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:25:40,742 INFO  L82        PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times
[2020-09-24 18:25:40,753 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:25:40,754 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953]
[2020-09-24 18:25:40,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:25:40,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:40,998 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:41,279 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:41,597 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:41,597 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 69
[2020-09-24 18:25:41,598 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:25:41,598 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 652
[2020-09-24 18:25:41,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:41,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:25:41,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 18:25:41,606 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-09-24 18:25:41,606 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 7
[2020-09-24 18:25:41,752 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:25:41,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:41,768 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:41,788 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:41,789 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:25:41,789 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:41,789 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-24 18:25:41,790 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:41,790 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:25:41,790 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:41,790 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:25:41,791 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:25:41,848 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 18:25:41,849 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953]
[2020-09-24 18:25:41,851 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:25:41,852 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 18:25:41,853 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828701264]
[2020-09-24 18:25:41,860 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 18:25:41,861 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:25:41,877 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 18:25:41,878 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 18:25:41,881 INFO  L87              Difference]: Start difference. First operand 456 states. Second operand 4 states.
[2020-09-24 18:25:43,878 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:25:43,879 INFO  L93              Difference]: Finished difference Result 1069 states and 1495 transitions.
[2020-09-24 18:25:43,879 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 18:25:43,881 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 60
[2020-09-24 18:25:43,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:25:43,904 INFO  L225             Difference]: With dead ends: 1069
[2020-09-24 18:25:43,904 INFO  L226             Difference]: Without dead ends: 555
[2020-09-24 18:25:43,915 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:25:43,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 555 states.
[2020-09-24 18:25:44,004 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543.
[2020-09-24 18:25:44,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 543 states.
[2020-09-24 18:25:44,011 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions.
[2020-09-24 18:25:44,014 INFO  L78                 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 60
[2020-09-24 18:25:44,016 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:25:44,016 INFO  L479      AbstractCegarLoop]: Abstraction has 543 states and 670 transitions.
[2020-09-24 18:25:44,017 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 18:25:44,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions.
[2020-09-24 18:25:44,026 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2020-09-24 18:25:44,026 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:25:44,027 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:44,027 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:25:44,027 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:25:44,028 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:25:44,033 INFO  L82        PathProgramCache]: Analyzing trace with hash 495482008, now seen corresponding path program 1 times
[2020-09-24 18:25:44,033 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:25:44,034 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488268593]
[2020-09-24 18:25:44,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:25:44,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:44,167 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:44,419 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:44,536 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:44,712 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:45,983 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:46,130 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:46,131 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 151
[2020-09-24 18:25:46,131 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:25:46,131 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2000
[2020-09-24 18:25:46,131 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:46,132 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:25:46,132 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-24 18:25:46,132 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 54
[2020-09-24 18:25:46,132 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:46,214 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:25:46,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:46,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:46,230 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:46,230 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:25:46,230 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:46,231 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 18:25:46,231 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:46,231 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:25:46,231 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:46,232 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:25:46,232 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:25:46,247 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:25:46,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:46,281 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:46,349 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:46,349 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 18:25:46,350 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:46,350 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 82
[2020-09-24 18:25:46,350 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:46,351 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:25:46,351 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:46,351 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:25:46,351 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:25:46,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:25:46,452 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488268593]
[2020-09-24 18:25:46,452 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:25:46,452 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:25:46,453 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852943986]
[2020-09-24 18:25:46,455 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:25:46,456 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:25:46,456 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:25:46,457 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:25:46,457 INFO  L87              Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states.
[2020-09-24 18:25:48,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:25:48,344 INFO  L93              Difference]: Finished difference Result 1387 states and 1793 transitions.
[2020-09-24 18:25:48,344 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:25:48,344 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 140
[2020-09-24 18:25:48,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:25:48,352 INFO  L225             Difference]: With dead ends: 1387
[2020-09-24 18:25:48,352 INFO  L226             Difference]: Without dead ends: 859
[2020-09-24 18:25:48,356 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:25:48,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 859 states.
[2020-09-24 18:25:48,418 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 847.
[2020-09-24 18:25:48,418 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 847 states.
[2020-09-24 18:25:48,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1051 transitions.
[2020-09-24 18:25:48,423 INFO  L78                 Accepts]: Start accepts. Automaton has 847 states and 1051 transitions. Word has length 140
[2020-09-24 18:25:48,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:25:48,424 INFO  L479      AbstractCegarLoop]: Abstraction has 847 states and 1051 transitions.
[2020-09-24 18:25:48,424 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:25:48,425 INFO  L276                IsEmpty]: Start isEmpty. Operand 847 states and 1051 transitions.
[2020-09-24 18:25:48,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 207
[2020-09-24 18:25:48,432 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:25:48,432 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:48,433 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:25:48,433 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:25:48,433 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:25:48,433 INFO  L82        PathProgramCache]: Analyzing trace with hash -1229481446, now seen corresponding path program 1 times
[2020-09-24 18:25:48,434 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:25:48,434 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931150855]
[2020-09-24 18:25:48,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:25:48,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:48,534 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:48,642 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:49,931 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:51,018 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:52,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:52,406 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:52,496 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:53,484 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:53,544 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:53,544 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 217
[2020-09-24 18:25:53,545 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 18:25:53,545 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5054
[2020-09-24 18:25:53,545 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:53,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:25:53,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 162
[2020-09-24 18:25:53,546 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 54
[2020-09-24 18:25:53,546 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:25:53,658 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:25:53,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:53,688 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:53,696 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:53,696 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:25:53,697 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:53,697 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:25:53,697 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:53,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:25:53,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:53,698 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:25:53,698 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:53,722 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:25:53,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:53,777 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:53,856 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:25:53,857 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 142
[2020-09-24 18:25:53,857 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:25:53,857 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 107
[2020-09-24 18:25:53,857 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:25:53,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:25:53,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:25:53,858 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 133
[2020-09-24 18:25:53,858 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:25:53,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:25:53,968 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931150855]
[2020-09-24 18:25:53,969 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:25:53,969 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:25:53,969 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214746498]
[2020-09-24 18:25:53,972 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:25:53,972 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:25:53,973 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:25:53,973 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:25:53,973 INFO  L87              Difference]: Start difference. First operand 847 states and 1051 transitions. Second operand 5 states.
[2020-09-24 18:25:55,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:25:55,813 INFO  L93              Difference]: Finished difference Result 2005 states and 2580 transitions.
[2020-09-24 18:25:55,813 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:25:55,813 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 206
[2020-09-24 18:25:55,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:25:55,823 INFO  L225             Difference]: With dead ends: 2005
[2020-09-24 18:25:55,823 INFO  L226             Difference]: Without dead ends: 1173
[2020-09-24 18:25:55,826 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:25:55,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1173 states.
[2020-09-24 18:25:55,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1151.
[2020-09-24 18:25:55,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1151 states.
[2020-09-24 18:25:55,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1459 transitions.
[2020-09-24 18:25:55,864 INFO  L78                 Accepts]: Start accepts. Automaton has 1151 states and 1459 transitions. Word has length 206
[2020-09-24 18:25:55,865 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:25:55,865 INFO  L479      AbstractCegarLoop]: Abstraction has 1151 states and 1459 transitions.
[2020-09-24 18:25:55,865 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:25:55,866 INFO  L276                IsEmpty]: Start isEmpty. Operand 1151 states and 1459 transitions.
[2020-09-24 18:25:55,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2020-09-24 18:25:55,870 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:25:55,871 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:55,871 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:25:55,871 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:25:55,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:25:55,872 INFO  L82        PathProgramCache]: Analyzing trace with hash 384739223, now seen corresponding path program 1 times
[2020-09-24 18:25:55,872 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:25:55,872 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059714409]
[2020-09-24 18:25:55,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:25:55,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:25:55,971 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:56,180 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:56,364 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:56,704 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:25:59,448 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:00,927 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:00,928 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 222
[2020-09-24 18:26:00,928 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:26:00,928 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-24 18:26:00,928 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:00,928 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:26:00,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 18:26:00,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 153
[2020-09-24 18:26:00,929 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:26:01,004 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:26:01,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:01,011 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:01,024 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:01,024 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:26:01,025 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:01,025 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 18:26:01,025 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:01,025 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:26:01,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:26:01,026 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:26:01,026 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:26:01,040 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:26:01,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:01,102 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:01,325 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:01,326 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 147
[2020-09-24 18:26:01,326 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:01,326 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 253
[2020-09-24 18:26:01,326 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:01,327 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:26:01,327 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:26:01,327 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 146
[2020-09-24 18:26:01,328 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:01,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:26:01,507 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059714409]
[2020-09-24 18:26:01,508 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:26:01,508 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-24 18:26:01,508 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977623211]
[2020-09-24 18:26:01,510 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:26:01,511 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:26:01,511 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:26:01,515 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:26:01,516 INFO  L87              Difference]: Start difference. First operand 1151 states and 1459 transitions. Second operand 7 states.
[2020-09-24 18:26:03,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:26:03,782 INFO  L93              Difference]: Finished difference Result 2673 states and 3466 transitions.
[2020-09-24 18:26:03,783 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 18:26:03,783 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 211
[2020-09-24 18:26:03,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:26:03,796 INFO  L225             Difference]: With dead ends: 2673
[2020-09-24 18:26:03,796 INFO  L226             Difference]: Without dead ends: 1537
[2020-09-24 18:26:03,803 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-09-24 18:26:03,806 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1537 states.
[2020-09-24 18:26:03,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1483.
[2020-09-24 18:26:03,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1483 states.
[2020-09-24 18:26:03,877 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1875 transitions.
[2020-09-24 18:26:03,877 INFO  L78                 Accepts]: Start accepts. Automaton has 1483 states and 1875 transitions. Word has length 211
[2020-09-24 18:26:03,878 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:26:03,879 INFO  L479      AbstractCegarLoop]: Abstraction has 1483 states and 1875 transitions.
[2020-09-24 18:26:03,880 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:26:03,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 1483 states and 1875 transitions.
[2020-09-24 18:26:03,888 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 245
[2020-09-24 18:26:03,888 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:26:03,888 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:26:03,889 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:26:03,889 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:26:03,889 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:26:03,889 INFO  L82        PathProgramCache]: Analyzing trace with hash 1582661552, now seen corresponding path program 1 times
[2020-09-24 18:26:03,890 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:26:03,891 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333440218]
[2020-09-24 18:26:03,891 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:26:03,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:03,962 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:04,066 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:04,147 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:05,898 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:08,929 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:08,930 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 257
[2020-09-24 18:26:08,930 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:26:08,931 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-24 18:26:08,931 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:08,931 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:26:08,931 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 103
[2020-09-24 18:26:08,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 100
[2020-09-24 18:26:08,932 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:09,016 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:26:09,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:09,022 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:09,029 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:09,030 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:26:09,030 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:09,031 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 18:26:09,031 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:09,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:26:09,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:26:09,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:26:09,032 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:09,049 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:26:09,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:09,083 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:09,141 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:09,142 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 82
[2020-09-24 18:26:09,142 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:09,142 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 74
[2020-09-24 18:26:09,143 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:09,143 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:26:09,143 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:26:09,144 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 18:26:09,144 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:09,181 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107
[2020-09-24 18:26:09,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:09,222 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:09,356 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:09,356 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-09-24 18:26:09,356 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:09,357 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 148
[2020-09-24 18:26:09,357 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:09,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:26:09,359 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:26:09,359 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 93
[2020-09-24 18:26:09,359 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 18:26:09,534 INFO  L134       CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:26:09,536 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333440218]
[2020-09-24 18:26:09,536 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:26:09,537 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:26:09,537 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763118691]
[2020-09-24 18:26:09,538 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:26:09,539 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:26:09,539 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:26:09,539 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:26:09,540 INFO  L87              Difference]: Start difference. First operand 1483 states and 1875 transitions. Second operand 7 states.
[2020-09-24 18:26:11,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:26:11,842 INFO  L93              Difference]: Finished difference Result 3313 states and 4306 transitions.
[2020-09-24 18:26:11,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 18:26:11,844 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 244
[2020-09-24 18:26:11,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:26:11,855 INFO  L225             Difference]: With dead ends: 3313
[2020-09-24 18:26:11,855 INFO  L226             Difference]: Without dead ends: 1845
[2020-09-24 18:26:11,860 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-09-24 18:26:11,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1845 states.
[2020-09-24 18:26:11,905 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1801.
[2020-09-24 18:26:11,906 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1801 states.
[2020-09-24 18:26:11,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2253 transitions.
[2020-09-24 18:26:11,914 INFO  L78                 Accepts]: Start accepts. Automaton has 1801 states and 2253 transitions. Word has length 244
[2020-09-24 18:26:11,914 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:26:11,914 INFO  L479      AbstractCegarLoop]: Abstraction has 1801 states and 2253 transitions.
[2020-09-24 18:26:11,914 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:26:11,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 1801 states and 2253 transitions.
[2020-09-24 18:26:11,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 255
[2020-09-24 18:26:11,921 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:26:11,922 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:26:11,922 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:26:11,922 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:26:11,922 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:26:11,923 INFO  L82        PathProgramCache]: Analyzing trace with hash -1966815502, now seen corresponding path program 1 times
[2020-09-24 18:26:11,923 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:26:11,923 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034356149]
[2020-09-24 18:26:11,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:26:11,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:11,988 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:12,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:12,167 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:12,706 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:15,047 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:15,371 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:16,982 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:16,982 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 267
[2020-09-24 18:26:16,982 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:26:16,983 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5024
[2020-09-24 18:26:16,983 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:16,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:26:16,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 112
[2020-09-24 18:26:16,984 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 101
[2020-09-24 18:26:16,984 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:26:17,073 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:26:17,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:17,078 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:17,086 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:17,086 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:26:17,086 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:17,087 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:26:17,087 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:17,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:26:17,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:26:17,088 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:26:17,089 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:17,106 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:26:17,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:17,153 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:17,254 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:17,255 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 92
[2020-09-24 18:26:17,255 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:17,255 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 122
[2020-09-24 18:26:17,256 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:17,256 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:26:17,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:26:17,257 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 83
[2020-09-24 18:26:17,257 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:17,297 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2020-09-24 18:26:17,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:17,338 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:17,515 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:26:17,516 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 94
[2020-09-24 18:26:17,516 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:26:17,516 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 194
[2020-09-24 18:26:17,517 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:26:17,517 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:26:17,518 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:26:17,518 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 93
[2020-09-24 18:26:17,518 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:26:17,723 INFO  L134       CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:26:17,724 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034356149]
[2020-09-24 18:26:17,726 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:26:17,726 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:26:17,727 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919779965]
[2020-09-24 18:26:17,728 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:26:17,728 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:26:17,729 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:26:17,729 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:26:17,730 INFO  L87              Difference]: Start difference. First operand 1801 states and 2253 transitions. Second operand 7 states.
[2020-09-24 18:26:20,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:26:20,370 INFO  L93              Difference]: Finished difference Result 4428 states and 5592 transitions.
[2020-09-24 18:26:20,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-09-24 18:26:20,371 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 254
[2020-09-24 18:26:20,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:26:20,386 INFO  L225             Difference]: With dead ends: 4428
[2020-09-24 18:26:20,386 INFO  L226             Difference]: Without dead ends: 2642
[2020-09-24 18:26:20,395 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2020-09-24 18:26:20,399 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2642 states.
[2020-09-24 18:26:20,474 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2600.
[2020-09-24 18:26:20,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2600 states.
[2020-09-24 18:26:20,486 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3172 transitions.
[2020-09-24 18:26:20,487 INFO  L78                 Accepts]: Start accepts. Automaton has 2600 states and 3172 transitions. Word has length 254
[2020-09-24 18:26:20,487 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:26:20,487 INFO  L479      AbstractCegarLoop]: Abstraction has 2600 states and 3172 transitions.
[2020-09-24 18:26:20,488 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:26:20,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 2600 states and 3172 transitions.
[2020-09-24 18:26:20,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 264
[2020-09-24 18:26:20,498 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:26:20,498 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:26:20,498 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 18:26:20,499 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:26:20,499 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:26:20,499 INFO  L82        PathProgramCache]: Analyzing trace with hash -1155493918, now seen corresponding path program 1 times
[2020-09-24 18:26:20,500 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:26:20,500 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909330297]
[2020-09-24 18:26:20,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:26:20,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:26:20,579 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:20,674 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:20,768 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:26:20,867 FATAL L256   erpolLogProxyWrapper]: Now shrinking...