/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:13:06,494 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-06 22:13:06,497 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-06 22:13:06,511 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-06 22:13:06,511 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-06 22:13:06,512 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-06 22:13:06,513 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-06 22:13:06,515 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-06 22:13:06,517 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-06 22:13:06,518 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-06 22:13:06,518 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-06 22:13:06,519 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-06 22:13:06,520 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-06 22:13:06,521 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-06 22:13:06,522 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-06 22:13:06,523 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-06 22:13:06,523 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-06 22:13:06,524 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-06 22:13:06,526 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-06 22:13:06,528 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-06 22:13:06,532 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-06 22:13:06,533 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-06 22:13:06,534 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-06 22:13:06,535 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-06 22:13:06,541 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-06 22:13:06,541 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-06 22:13:06,541 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-06 22:13:06,542 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-06 22:13:06,545 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-06 22:13:06,546 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-06 22:13:06,546 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-06 22:13:06,547 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-06 22:13:06,548 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-06 22:13:06,551 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-06 22:13:06,552 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-06 22:13:06,552 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-06 22:13:06,553 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-06 22:13:06,555 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-06 22:13:06,556 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-06 22:13:06,557 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-06 22:13:06,557 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-06 22:13:06,561 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 22:13:06,583 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:13:06,583 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:13:06,585 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:13:06,585 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:13:06,585 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:13:06,586 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:13:06,586 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:13:06,586 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:13:06,586 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:13:06,586 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:13:06,588 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:13:06,588 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:13:06,588 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:13:06,588 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:13:06,588 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:13:06,588 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:13:06,589 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:13:06,589 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:13:06,589 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:13:06,589 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:13:06,589 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:13:06,590 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:13:06,590 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:13:06,590 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:13:06,590 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:13:06,590 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:13:06,590 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:13:06,591 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:13:06,591 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:13:06,916 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:13:06,932 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:13:06,936 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:13:06,937 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:13:06,937 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:13:06,938 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-11-06 22:13:07,000 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc03a2b8/0b90b68350d54996a8085d8a3c9b457b/FLAG97ae8420e
[2019-11-06 22:13:07,551 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:13:07,553 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-11-06 22:13:07,567 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc03a2b8/0b90b68350d54996a8085d8a3c9b457b/FLAG97ae8420e
[2019-11-06 22:13:07,823 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc03a2b8/0b90b68350d54996a8085d8a3c9b457b
[2019-11-06 22:13:07,831 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:13:07,833 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:13:07,834 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:13:07,834 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:13:07,838 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:13:07,839 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:07" (1/1) ...
[2019-11-06 22:13:07,842 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238a7b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:07, skipping insertion in model container
[2019-11-06 22:13:07,842 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:07" (1/1) ...
[2019-11-06 22:13:07,850 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:13:07,925 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:13:08,454 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:13:08,467 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:13:08,630 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:13:08,654 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:13:08,655 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08 WrapperNode
[2019-11-06 22:13:08,655 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:13:08,656 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:13:08,656 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:13:08,656 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:13:08,666 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,666 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,682 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,683 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,728 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,744 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,767 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
[2019-11-06 22:13:08,773 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:13:08,774 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:13:08,774 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:13:08,774 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:13:08,775 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2019-11-06 22:13:08,844 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:13:08,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:13:08,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:13:08,845 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:13:08,845 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:13:08,846 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2019-11-06 22:13:08,846 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:13:08,846 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:13:08,846 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:13:08,846 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:13:08,846 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:13:08,847 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:13:08,847 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:13:08,847 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:13:08,847 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:13:08,847 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:13:08,848 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:13:08,848 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:13:08,848 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:13:10,382 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:13:10,382 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:13:10,384 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:10 BoogieIcfgContainer
[2019-11-06 22:13:10,384 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:13:10,386 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:13:10,386 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:13:10,390 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:13:10,390 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:07" (1/3) ...
[2019-11-06 22:13:10,393 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bb0a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:10, skipping insertion in model container
[2019-11-06 22:13:10,393 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:08" (2/3) ...
[2019-11-06 22:13:10,394 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bb0a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:10, skipping insertion in model container
[2019-11-06 22:13:10,394 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:10" (3/3) ...
[2019-11-06 22:13:10,401 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-11-06 22:13:10,411 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:13:10,430 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 22:13:10,441 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 22:13:10,469 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:13:10,469 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:13:10,469 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:13:10,469 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:13:10,470 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:13:10,470 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:13:10,470 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:13:10,470 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:13:10,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 317 states.
[2019-11-06 22:13:10,525 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-11-06 22:13:10,525 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:10,526 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:10,528 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:10,533 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:10,534 INFO  L82        PathProgramCache]: Analyzing trace with hash 885340602, now seen corresponding path program 1 times
[2019-11-06 22:13:10,543 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:10,543 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421070164]
[2019-11-06 22:13:10,544 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:10,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:11,488 WARN  L191               SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:11,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:11,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:11,574 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421070164]
[2019-11-06 22:13:11,575 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:11,575 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:11,577 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603550070]
[2019-11-06 22:13:11,584 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:11,585 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:11,598 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:11,599 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:11,602 INFO  L87              Difference]: Start difference. First operand 317 states. Second operand 4 states.
[2019-11-06 22:13:11,895 WARN  L191               SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 167
[2019-11-06 22:13:13,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:13,635 INFO  L93              Difference]: Finished difference Result 641 states and 1120 transitions.
[2019-11-06 22:13:13,635 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:13,637 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 150
[2019-11-06 22:13:13,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:13,656 INFO  L225             Difference]: With dead ends: 641
[2019-11-06 22:13:13,656 INFO  L226             Difference]: Without dead ends: 514
[2019-11-06 22:13:13,662 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:13,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 514 states.
[2019-11-06 22:13:13,793 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512.
[2019-11-06 22:13:13,794 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 512 states.
[2019-11-06 22:13:13,797 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions.
[2019-11-06 22:13:13,799 INFO  L78                 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 150
[2019-11-06 22:13:13,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:13,800 INFO  L462      AbstractCegarLoop]: Abstraction has 512 states and 761 transitions.
[2019-11-06 22:13:13,800 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:13,800 INFO  L276                IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions.
[2019-11-06 22:13:13,806 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-11-06 22:13:13,806 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:13,807 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:13,807 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:13,807 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:13,808 INFO  L82        PathProgramCache]: Analyzing trace with hash -20093490, now seen corresponding path program 1 times
[2019-11-06 22:13:13,808 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:13,808 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351754682]
[2019-11-06 22:13:13,808 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:13,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:14,189 WARN  L191               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:14,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:14,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:14,235 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351754682]
[2019-11-06 22:13:14,236 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:14,236 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:14,236 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570722173]
[2019-11-06 22:13:14,238 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:14,238 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:14,239 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:14,239 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:14,239 INFO  L87              Difference]: Start difference. First operand 512 states and 761 transitions. Second operand 4 states.
[2019-11-06 22:13:14,516 WARN  L191               SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 167
[2019-11-06 22:13:15,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:15,812 INFO  L93              Difference]: Finished difference Result 1076 states and 1646 transitions.
[2019-11-06 22:13:15,813 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:15,813 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 150
[2019-11-06 22:13:15,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:15,822 INFO  L225             Difference]: With dead ends: 1076
[2019-11-06 22:13:15,823 INFO  L226             Difference]: Without dead ends: 884
[2019-11-06 22:13:15,825 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:15,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 884 states.
[2019-11-06 22:13:15,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882.
[2019-11-06 22:13:15,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 882 states.
[2019-11-06 22:13:15,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1323 transitions.
[2019-11-06 22:13:15,870 INFO  L78                 Accepts]: Start accepts. Automaton has 882 states and 1323 transitions. Word has length 150
[2019-11-06 22:13:15,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:15,871 INFO  L462      AbstractCegarLoop]: Abstraction has 882 states and 1323 transitions.
[2019-11-06 22:13:15,871 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:15,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 882 states and 1323 transitions.
[2019-11-06 22:13:15,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-11-06 22:13:15,875 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:15,875 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:15,875 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:15,876 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:15,876 INFO  L82        PathProgramCache]: Analyzing trace with hash 1175617460, now seen corresponding path program 1 times
[2019-11-06 22:13:15,876 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:15,876 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538036727]
[2019-11-06 22:13:15,877 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:16,030 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:16,466 WARN  L191               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:16,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:16,515 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:16,516 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538036727]
[2019-11-06 22:13:16,516 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:16,516 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:16,516 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178037019]
[2019-11-06 22:13:16,517 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:16,517 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:16,518 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:16,518 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:16,518 INFO  L87              Difference]: Start difference. First operand 882 states and 1323 transitions. Second operand 5 states.
[2019-11-06 22:13:18,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:18,810 INFO  L93              Difference]: Finished difference Result 2577 states and 3862 transitions.
[2019-11-06 22:13:18,811 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:18,811 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 150
[2019-11-06 22:13:18,811 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:18,819 INFO  L225             Difference]: With dead ends: 2577
[2019-11-06 22:13:18,820 INFO  L226             Difference]: Without dead ends: 1708
[2019-11-06 22:13:18,823 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:18,825 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1708 states.
[2019-11-06 22:13:18,896 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706.
[2019-11-06 22:13:18,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1706 states.
[2019-11-06 22:13:18,904 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2536 transitions.
[2019-11-06 22:13:18,904 INFO  L78                 Accepts]: Start accepts. Automaton has 1706 states and 2536 transitions. Word has length 150
[2019-11-06 22:13:18,905 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:18,905 INFO  L462      AbstractCegarLoop]: Abstraction has 1706 states and 2536 transitions.
[2019-11-06 22:13:18,905 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:18,905 INFO  L276                IsEmpty]: Start isEmpty. Operand 1706 states and 2536 transitions.
[2019-11-06 22:13:18,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2019-11-06 22:13:18,909 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:18,910 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:18,910 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:18,910 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:18,911 INFO  L82        PathProgramCache]: Analyzing trace with hash -522806920, now seen corresponding path program 1 times
[2019-11-06 22:13:18,911 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:18,911 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930326377]
[2019-11-06 22:13:18,911 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:18,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:19,215 WARN  L191               SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:19,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:19,266 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:19,266 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930326377]
[2019-11-06 22:13:19,267 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:19,267 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:19,267 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100585102]
[2019-11-06 22:13:19,268 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:19,268 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:19,269 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:19,269 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:19,269 INFO  L87              Difference]: Start difference. First operand 1706 states and 2536 transitions. Second operand 4 states.
[2019-11-06 22:13:21,816 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:21,817 INFO  L93              Difference]: Finished difference Result 5072 states and 7538 transitions.
[2019-11-06 22:13:21,817 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:21,818 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 151
[2019-11-06 22:13:21,818 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:21,834 INFO  L225             Difference]: With dead ends: 5072
[2019-11-06 22:13:21,835 INFO  L226             Difference]: Without dead ends: 3398
[2019-11-06 22:13:21,839 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:21,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3398 states.
[2019-11-06 22:13:21,959 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1708.
[2019-11-06 22:13:21,960 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1708 states.
[2019-11-06 22:13:21,966 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2538 transitions.
[2019-11-06 22:13:21,966 INFO  L78                 Accepts]: Start accepts. Automaton has 1708 states and 2538 transitions. Word has length 151
[2019-11-06 22:13:21,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:21,967 INFO  L462      AbstractCegarLoop]: Abstraction has 1708 states and 2538 transitions.
[2019-11-06 22:13:21,967 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:21,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 1708 states and 2538 transitions.
[2019-11-06 22:13:21,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-11-06 22:13:21,971 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:21,971 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:21,971 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:21,972 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:21,972 INFO  L82        PathProgramCache]: Analyzing trace with hash -1124709406, now seen corresponding path program 1 times
[2019-11-06 22:13:21,972 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:21,974 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346891678]
[2019-11-06 22:13:21,974 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:22,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:22,260 WARN  L191               SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:22,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:22,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:22,307 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346891678]
[2019-11-06 22:13:22,308 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:22,308 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:22,308 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039851034]
[2019-11-06 22:13:22,309 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:22,309 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:22,309 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:22,310 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:22,310 INFO  L87              Difference]: Start difference. First operand 1708 states and 2538 transitions. Second operand 4 states.
[2019-11-06 22:13:24,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:24,569 INFO  L93              Difference]: Finished difference Result 4838 states and 7205 transitions.
[2019-11-06 22:13:24,569 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:24,569 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 152
[2019-11-06 22:13:24,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:24,585 INFO  L225             Difference]: With dead ends: 4838
[2019-11-06 22:13:24,585 INFO  L226             Difference]: Without dead ends: 3310
[2019-11-06 22:13:24,589 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:24,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3310 states.
[2019-11-06 22:13:24,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3308.
[2019-11-06 22:13:24,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3308 states.
[2019-11-06 22:13:24,731 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 4871 transitions.
[2019-11-06 22:13:24,731 INFO  L78                 Accepts]: Start accepts. Automaton has 3308 states and 4871 transitions. Word has length 152
[2019-11-06 22:13:24,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:24,732 INFO  L462      AbstractCegarLoop]: Abstraction has 3308 states and 4871 transitions.
[2019-11-06 22:13:24,732 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:24,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 3308 states and 4871 transitions.
[2019-11-06 22:13:24,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-11-06 22:13:24,738 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:24,738 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:24,738 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:24,738 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:24,739 INFO  L82        PathProgramCache]: Analyzing trace with hash -617278081, now seen corresponding path program 1 times
[2019-11-06 22:13:24,739 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:24,739 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534009001]
[2019-11-06 22:13:24,739 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:24,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:25,201 WARN  L191               SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:25,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:25,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:25,305 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534009001]
[2019-11-06 22:13:25,306 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:25,306 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:25,307 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755742601]
[2019-11-06 22:13:25,307 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:25,307 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:25,307 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:25,308 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:25,308 INFO  L87              Difference]: Start difference. First operand 3308 states and 4871 transitions. Second operand 5 states.
[2019-11-06 22:13:26,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:26,647 INFO  L93              Difference]: Finished difference Result 5666 states and 8353 transitions.
[2019-11-06 22:13:26,647 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:13:26,647 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 152
[2019-11-06 22:13:26,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:26,660 INFO  L225             Difference]: With dead ends: 5666
[2019-11-06 22:13:26,660 INFO  L226             Difference]: Without dead ends: 2528
[2019-11-06 22:13:26,667 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:26,670 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2528 states.
[2019-11-06 22:13:26,778 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2528.
[2019-11-06 22:13:26,778 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2528 states.
[2019-11-06 22:13:26,785 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3707 transitions.
[2019-11-06 22:13:26,785 INFO  L78                 Accepts]: Start accepts. Automaton has 2528 states and 3707 transitions. Word has length 152
[2019-11-06 22:13:26,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:26,785 INFO  L462      AbstractCegarLoop]: Abstraction has 2528 states and 3707 transitions.
[2019-11-06 22:13:26,785 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:13:26,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 2528 states and 3707 transitions.
[2019-11-06 22:13:26,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:13:26,790 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:26,791 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:26,791 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:26,791 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:26,791 INFO  L82        PathProgramCache]: Analyzing trace with hash 696225132, now seen corresponding path program 1 times
[2019-11-06 22:13:26,792 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:26,792 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438802177]
[2019-11-06 22:13:26,792 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:26,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:27,138 WARN  L191               SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:27,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:27,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:27,265 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438802177]
[2019-11-06 22:13:27,265 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:27,266 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:13:27,266 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043060445]
[2019-11-06 22:13:27,266 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:13:27,268 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:27,268 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:13:27,268 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:27,269 INFO  L87              Difference]: Start difference. First operand 2528 states and 3707 transitions. Second operand 4 states.
[2019-11-06 22:13:28,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:28,772 INFO  L93              Difference]: Finished difference Result 6812 states and 10094 transitions.
[2019-11-06 22:13:28,773 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:13:28,773 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 158
[2019-11-06 22:13:28,773 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:28,796 INFO  L225             Difference]: With dead ends: 6812
[2019-11-06 22:13:28,796 INFO  L226             Difference]: Without dead ends: 4696
[2019-11-06 22:13:28,802 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:13:28,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4696 states.
[2019-11-06 22:13:29,103 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4694.
[2019-11-06 22:13:29,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4694 states.
[2019-11-06 22:13:29,112 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6887 transitions.
[2019-11-06 22:13:29,114 INFO  L78                 Accepts]: Start accepts. Automaton has 4694 states and 6887 transitions. Word has length 158
[2019-11-06 22:13:29,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:29,115 INFO  L462      AbstractCegarLoop]: Abstraction has 4694 states and 6887 transitions.
[2019-11-06 22:13:29,115 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:13:29,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 4694 states and 6887 transitions.
[2019-11-06 22:13:29,123 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:13:29,123 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:29,123 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:29,123 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:29,124 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:29,124 INFO  L82        PathProgramCache]: Analyzing trace with hash -1185599087, now seen corresponding path program 1 times
[2019-11-06 22:13:29,124 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:29,124 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176148013]
[2019-11-06 22:13:29,124 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:29,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:29,804 WARN  L191               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:29,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:29,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:29,954 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176148013]
[2019-11-06 22:13:29,954 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:29,954 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2019-11-06 22:13:29,954 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378439219]
[2019-11-06 22:13:29,955 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 16 states
[2019-11-06 22:13:29,955 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:29,955 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2019-11-06 22:13:29,956 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2019-11-06 22:13:29,956 INFO  L87              Difference]: Start difference. First operand 4694 states and 6887 transitions. Second operand 16 states.
[2019-11-06 22:13:30,240 WARN  L191               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:13:33,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:33,670 INFO  L93              Difference]: Finished difference Result 12388 states and 19102 transitions.
[2019-11-06 22:13:33,670 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-11-06 22:13:33,671 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 158
[2019-11-06 22:13:33,671 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:33,701 INFO  L225             Difference]: With dead ends: 12388
[2019-11-06 22:13:33,702 INFO  L226             Difference]: Without dead ends: 8416
[2019-11-06 22:13:33,710 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506
[2019-11-06 22:13:33,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8416 states.
[2019-11-06 22:13:34,000 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6432.
[2019-11-06 22:13:34,000 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6432 states.
[2019-11-06 22:13:34,010 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 9844 transitions.
[2019-11-06 22:13:34,010 INFO  L78                 Accepts]: Start accepts. Automaton has 6432 states and 9844 transitions. Word has length 158
[2019-11-06 22:13:34,011 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:34,011 INFO  L462      AbstractCegarLoop]: Abstraction has 6432 states and 9844 transitions.
[2019-11-06 22:13:34,011 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2019-11-06 22:13:34,011 INFO  L276                IsEmpty]: Start isEmpty. Operand 6432 states and 9844 transitions.
[2019-11-06 22:13:34,017 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:13:34,018 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:34,018 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:34,018 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:34,018 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:34,019 INFO  L82        PathProgramCache]: Analyzing trace with hash 11065959, now seen corresponding path program 1 times
[2019-11-06 22:13:34,019 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:34,019 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160852668]
[2019-11-06 22:13:34,019 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:34,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:34,425 WARN  L191               SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:34,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:34,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:34,476 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160852668]
[2019-11-06 22:13:34,477 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:34,477 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2019-11-06 22:13:34,477 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654377692]
[2019-11-06 22:13:34,478 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-11-06 22:13:34,478 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:34,478 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-11-06 22:13:34,478 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2019-11-06 22:13:34,478 INFO  L87              Difference]: Start difference. First operand 6432 states and 9844 transitions. Second operand 10 states.
[2019-11-06 22:13:34,714 WARN  L191               SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 167
[2019-11-06 22:13:36,247 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:36,248 INFO  L93              Difference]: Finished difference Result 13818 states and 21476 transitions.
[2019-11-06 22:13:36,248 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-06 22:13:36,248 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 158
[2019-11-06 22:13:36,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:36,273 INFO  L225             Difference]: With dead ends: 13818
[2019-11-06 22:13:36,274 INFO  L226             Difference]: Without dead ends: 9628
[2019-11-06 22:13:36,283 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2019-11-06 22:13:36,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9628 states.
[2019-11-06 22:13:36,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 7796.
[2019-11-06 22:13:36,734 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7796 states.
[2019-11-06 22:13:36,745 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7796 states to 7796 states and 11622 transitions.
[2019-11-06 22:13:36,745 INFO  L78                 Accepts]: Start accepts. Automaton has 7796 states and 11622 transitions. Word has length 158
[2019-11-06 22:13:36,746 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:36,747 INFO  L462      AbstractCegarLoop]: Abstraction has 7796 states and 11622 transitions.
[2019-11-06 22:13:36,747 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-11-06 22:13:36,747 INFO  L276                IsEmpty]: Start isEmpty. Operand 7796 states and 11622 transitions.
[2019-11-06 22:13:36,757 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:13:36,760 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:36,760 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:36,761 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:36,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:36,761 INFO  L82        PathProgramCache]: Analyzing trace with hash -362607228, now seen corresponding path program 1 times
[2019-11-06 22:13:36,761 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:36,761 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456624371]
[2019-11-06 22:13:36,762 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:36,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:37,105 WARN  L191               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:37,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:37,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:37,162 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456624371]
[2019-11-06 22:13:37,164 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:37,165 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-11-06 22:13:37,165 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751983201]
[2019-11-06 22:13:37,165 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-06 22:13:37,166 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:37,166 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-06 22:13:37,166 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:13:37,166 INFO  L87              Difference]: Start difference. First operand 7796 states and 11622 transitions. Second operand 6 states.
[2019-11-06 22:13:37,418 WARN  L191               SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 169
[2019-11-06 22:13:39,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:13:39,786 INFO  L93              Difference]: Finished difference Result 16045 states and 25162 transitions.
[2019-11-06 22:13:39,787 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 22:13:39,787 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 158
[2019-11-06 22:13:39,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:13:39,817 INFO  L225             Difference]: With dead ends: 16045
[2019-11-06 22:13:39,818 INFO  L226             Difference]: Without dead ends: 14207
[2019-11-06 22:13:39,825 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-11-06 22:13:39,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14207 states.
[2019-11-06 22:13:40,439 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14207 to 10541.
[2019-11-06 22:13:40,439 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10541 states.
[2019-11-06 22:13:40,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10541 states to 10541 states and 16098 transitions.
[2019-11-06 22:13:40,450 INFO  L78                 Accepts]: Start accepts. Automaton has 10541 states and 16098 transitions. Word has length 158
[2019-11-06 22:13:40,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:13:40,451 INFO  L462      AbstractCegarLoop]: Abstraction has 10541 states and 16098 transitions.
[2019-11-06 22:13:40,451 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-06 22:13:40,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 10541 states and 16098 transitions.
[2019-11-06 22:13:40,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:13:40,461 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:13:40,461 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:13:40,461 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:13:40,462 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:13:40,462 INFO  L82        PathProgramCache]: Analyzing trace with hash 1963094895, now seen corresponding path program 1 times
[2019-11-06 22:13:40,462 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:13:40,462 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17938460]
[2019-11-06 22:13:40,462 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:13:40,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:40,803 WARN  L191               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-11-06 22:13:40,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:13:40,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 22:13:40,843 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17938460]
[2019-11-06 22:13:40,843 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:13:40,843 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:13:40,844 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933083837]
[2019-11-06 22:13:40,844 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:13:40,844 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:13:40,844 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:13:40,845 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:13:40,845 INFO  L87              Difference]: Start difference. First operand 10541 states and 16098 transitions. Second operand 5 states.