/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 22:15:27,955 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-06 22:15:27,957 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-06 22:15:27,978 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-06 22:15:27,978 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-06 22:15:27,980 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-06 22:15:27,982 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-06 22:15:27,992 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-06 22:15:27,996 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-06 22:15:27,999 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-06 22:15:28,002 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-06 22:15:28,004 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-06 22:15:28,004 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-06 22:15:28,006 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-06 22:15:28,008 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-06 22:15:28,010 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-06 22:15:28,012 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-06 22:15:28,013 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-06 22:15:28,014 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-06 22:15:28,020 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-06 22:15:28,025 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-06 22:15:28,028 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-06 22:15:28,031 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-06 22:15:28,032 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-06 22:15:28,034 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-06 22:15:28,034 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-06 22:15:28,035 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-06 22:15:28,036 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-06 22:15:28,037 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-06 22:15:28,039 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-06 22:15:28,039 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-06 22:15:28,041 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-06 22:15:28,042 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-06 22:15:28,042 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-06 22:15:28,044 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-06 22:15:28,044 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-06 22:15:28,045 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-06 22:15:28,045 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-06 22:15:28,045 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-06 22:15:28,048 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-06 22:15:28,049 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-06 22:15:28,050 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 22:15:28,075 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 22:15:28,075 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 22:15:28,076 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 22:15:28,077 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 22:15:28,077 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 22:15:28,077 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 22:15:28,077 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 22:15:28,078 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 22:15:28,078 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 22:15:28,078 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 22:15:28,078 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 22:15:28,078 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 22:15:28,079 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 22:15:28,079 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 22:15:28,079 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 22:15:28,079 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 22:15:28,079 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 22:15:28,080 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 22:15:28,080 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 22:15:28,080 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 22:15:28,080 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 22:15:28,080 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 22:15:28,081 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 22:15:28,081 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 22:15:28,081 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 22:15:28,081 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 22:15:28,081 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 22:15:28,082 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 22:15:28,082 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 22:15:28,348 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 22:15:28,365 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 22:15:28,368 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 22:15:28,370 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 22:15:28,370 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 22:15:28,371 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-11-06 22:15:28,445 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e456f5f0f/40e264d3b9f942109362e09b2848e0c2/FLAG3b4eedd20
[2019-11-06 22:15:29,008 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 22:15:29,009 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-11-06 22:15:29,020 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e456f5f0f/40e264d3b9f942109362e09b2848e0c2/FLAG3b4eedd20
[2019-11-06 22:15:29,285 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e456f5f0f/40e264d3b9f942109362e09b2848e0c2
[2019-11-06 22:15:29,295 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 22:15:29,296 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 22:15:29,297 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 22:15:29,298 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 22:15:29,301 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 22:15:29,302 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:29" (1/1) ...
[2019-11-06 22:15:29,305 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d6e832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:29, skipping insertion in model container
[2019-11-06 22:15:29,305 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:29" (1/1) ...
[2019-11-06 22:15:29,312 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 22:15:29,372 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 22:15:29,907 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:15:29,920 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 22:15:30,087 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 22:15:30,108 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 22:15:30,109 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30 WrapperNode
[2019-11-06 22:15:30,109 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 22:15:30,110 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 22:15:30,110 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 22:15:30,110 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 22:15:30,128 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,128 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,146 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,146 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,173 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,195 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,200 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (1/1) ...
[2019-11-06 22:15:30,208 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 22:15:30,208 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 22:15:30,209 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 22:15:30,209 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 22:15:30,210 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (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 22:15:30,290 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 22:15:30,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 22:15:30,291 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 22:15:30,292 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 22:15:30,292 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-11-06 22:15:30,293 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2019-11-06 22:15:30,293 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-11-06 22:15:30,294 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-11-06 22:15:30,294 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-11-06 22:15:30,294 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-11-06 22:15:30,294 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-11-06 22:15:30,295 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-11-06 22:15:30,295 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-11-06 22:15:30,295 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-11-06 22:15:30,296 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-11-06 22:15:30,297 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-11-06 22:15:30,299 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 22:15:30,299 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 22:15:30,299 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 22:15:31,619 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 22:15:31,620 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-06 22:15:31,621 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:31 BoogieIcfgContainer
[2019-11-06 22:15:31,622 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 22:15:31,623 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 22:15:31,623 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 22:15:31,627 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 22:15:31,627 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:29" (1/3) ...
[2019-11-06 22:15:31,628 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b703459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:31, skipping insertion in model container
[2019-11-06 22:15:31,628 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:30" (2/3) ...
[2019-11-06 22:15:31,629 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b703459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:31, skipping insertion in model container
[2019-11-06 22:15:31,629 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:31" (3/3) ...
[2019-11-06 22:15:31,636 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-11-06 22:15:31,648 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 22:15:31,676 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 22:15:31,691 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 22:15:31,733 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 22:15:31,733 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 22:15:31,733 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 22:15:31,733 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 22:15:31,734 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 22:15:31,734 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 22:15:31,734 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 22:15:31,734 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 22:15:31,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 336 states.
[2019-11-06 22:15:31,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2019-11-06 22:15:31,774 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:31,775 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]
[2019-11-06 22:15:31,777 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:31,781 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:31,782 INFO  L82        PathProgramCache]: Analyzing trace with hash 1155837260, now seen corresponding path program 1 times
[2019-11-06 22:15:31,788 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:31,789 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207265571]
[2019-11-06 22:15:31,789 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:32,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:32,758 WARN  L191               SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:32,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:32,816 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 22:15:32,817 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207265571]
[2019-11-06 22:15:32,817 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:32,818 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:32,819 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131957495]
[2019-11-06 22:15:32,825 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:32,825 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:32,839 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:32,840 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:32,842 INFO  L87              Difference]: Start difference. First operand 336 states. Second operand 4 states.
[2019-11-06 22:15:33,152 WARN  L191               SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 176
[2019-11-06 22:15:34,799 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:34,800 INFO  L93              Difference]: Finished difference Result 647 states and 1119 transitions.
[2019-11-06 22:15:34,800 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:34,802 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 156
[2019-11-06 22:15:34,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:34,822 INFO  L225             Difference]: With dead ends: 647
[2019-11-06 22:15:34,823 INFO  L226             Difference]: Without dead ends: 527
[2019-11-06 22:15:34,827 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 22:15:34,850 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 527 states.
[2019-11-06 22:15:34,977 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525.
[2019-11-06 22:15:34,978 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 525 states.
[2019-11-06 22:15:34,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 780 transitions.
[2019-11-06 22:15:34,986 INFO  L78                 Accepts]: Start accepts. Automaton has 525 states and 780 transitions. Word has length 156
[2019-11-06 22:15:34,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:34,989 INFO  L462      AbstractCegarLoop]: Abstraction has 525 states and 780 transitions.
[2019-11-06 22:15:34,989 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:34,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 525 states and 780 transitions.
[2019-11-06 22:15:35,000 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2019-11-06 22:15:35,000 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:35,001 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]
[2019-11-06 22:15:35,002 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:35,002 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:35,002 INFO  L82        PathProgramCache]: Analyzing trace with hash 1353690447, now seen corresponding path program 1 times
[2019-11-06 22:15:35,003 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:35,003 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399294413]
[2019-11-06 22:15:35,003 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:35,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:35,721 WARN  L191               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:35,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:35,769 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 22:15:35,770 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399294413]
[2019-11-06 22:15:35,770 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:35,770 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:35,770 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497560786]
[2019-11-06 22:15:35,772 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:35,773 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:35,773 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:35,773 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:35,773 INFO  L87              Difference]: Start difference. First operand 525 states and 780 transitions. Second operand 5 states.
[2019-11-06 22:15:38,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:38,098 INFO  L93              Difference]: Finished difference Result 1532 states and 2273 transitions.
[2019-11-06 22:15:38,098 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:38,098 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 156
[2019-11-06 22:15:38,099 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:38,104 INFO  L225             Difference]: With dead ends: 1532
[2019-11-06 22:15:38,104 INFO  L226             Difference]: Without dead ends: 1020
[2019-11-06 22:15:38,108 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 22:15:38,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1020 states.
[2019-11-06 22:15:38,150 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1018.
[2019-11-06 22:15:38,150 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1018 states.
[2019-11-06 22:15:38,155 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1501 transitions.
[2019-11-06 22:15:38,155 INFO  L78                 Accepts]: Start accepts. Automaton has 1018 states and 1501 transitions. Word has length 156
[2019-11-06 22:15:38,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:38,156 INFO  L462      AbstractCegarLoop]: Abstraction has 1018 states and 1501 transitions.
[2019-11-06 22:15:38,156 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:38,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 1018 states and 1501 transitions.
[2019-11-06 22:15:38,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2019-11-06 22:15:38,160 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:38,161 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]
[2019-11-06 22:15:38,161 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:38,161 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:38,161 INFO  L82        PathProgramCache]: Analyzing trace with hash 1552789903, now seen corresponding path program 1 times
[2019-11-06 22:15:38,162 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:38,162 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991496708]
[2019-11-06 22:15:38,162 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:38,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:38,411 WARN  L191               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:38,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:38,445 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 22:15:38,446 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991496708]
[2019-11-06 22:15:38,446 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:38,446 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:38,447 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139667449]
[2019-11-06 22:15:38,452 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:38,453 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:38,453 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:38,454 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:38,459 INFO  L87              Difference]: Start difference. First operand 1018 states and 1501 transitions. Second operand 4 states.
[2019-11-06 22:15:41,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:41,059 INFO  L93              Difference]: Finished difference Result 3008 states and 4433 transitions.
[2019-11-06 22:15:41,059 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:41,060 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 157
[2019-11-06 22:15:41,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:41,074 INFO  L225             Difference]: With dead ends: 3008
[2019-11-06 22:15:41,074 INFO  L226             Difference]: Without dead ends: 2022
[2019-11-06 22:15:41,077 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:41,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2022 states.
[2019-11-06 22:15:41,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1020.
[2019-11-06 22:15:41,145 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1020 states.
[2019-11-06 22:15:41,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1503 transitions.
[2019-11-06 22:15:41,153 INFO  L78                 Accepts]: Start accepts. Automaton has 1020 states and 1503 transitions. Word has length 157
[2019-11-06 22:15:41,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:41,153 INFO  L462      AbstractCegarLoop]: Abstraction has 1020 states and 1503 transitions.
[2019-11-06 22:15:41,153 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:41,153 INFO  L276                IsEmpty]: Start isEmpty. Operand 1020 states and 1503 transitions.
[2019-11-06 22:15:41,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:15:41,158 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:41,159 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 22:15:41,159 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:41,159 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:41,160 INFO  L82        PathProgramCache]: Analyzing trace with hash 1516867775, now seen corresponding path program 1 times
[2019-11-06 22:15:41,160 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:41,160 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849809798]
[2019-11-06 22:15:41,161 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:41,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:41,482 WARN  L191               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:41,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:41,559 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 22:15:41,559 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849809798]
[2019-11-06 22:15:41,559 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:41,559 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:41,560 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711381653]
[2019-11-06 22:15:41,560 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:41,561 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:41,561 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:41,561 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:41,562 INFO  L87              Difference]: Start difference. First operand 1020 states and 1503 transitions. Second operand 4 states.
[2019-11-06 22:15:44,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:44,515 INFO  L93              Difference]: Finished difference Result 2789 states and 4120 transitions.
[2019-11-06 22:15:44,516 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:44,516 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 158
[2019-11-06 22:15:44,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:44,526 INFO  L225             Difference]: With dead ends: 2789
[2019-11-06 22:15:44,526 INFO  L226             Difference]: Without dead ends: 1966
[2019-11-06 22:15:44,528 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 22:15:44,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1966 states.
[2019-11-06 22:15:44,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1964.
[2019-11-06 22:15:44,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1964 states.
[2019-11-06 22:15:44,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2867 transitions.
[2019-11-06 22:15:44,621 INFO  L78                 Accepts]: Start accepts. Automaton has 1964 states and 2867 transitions. Word has length 158
[2019-11-06 22:15:44,622 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:44,623 INFO  L462      AbstractCegarLoop]: Abstraction has 1964 states and 2867 transitions.
[2019-11-06 22:15:44,623 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:44,623 INFO  L276                IsEmpty]: Start isEmpty. Operand 1964 states and 2867 transitions.
[2019-11-06 22:15:44,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-11-06 22:15:44,627 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:44,627 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 22:15:44,627 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:44,627 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:44,628 INFO  L82        PathProgramCache]: Analyzing trace with hash -2015367012, now seen corresponding path program 1 times
[2019-11-06 22:15:44,628 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:44,628 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591080372]
[2019-11-06 22:15:44,628 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:44,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:45,034 WARN  L191               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:45,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:45,076 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 22:15:45,077 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591080372]
[2019-11-06 22:15:45,077 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:45,077 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:45,078 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139300029]
[2019-11-06 22:15:45,078 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:45,078 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:45,078 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:45,079 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:45,079 INFO  L87              Difference]: Start difference. First operand 1964 states and 2867 transitions. Second operand 5 states.
[2019-11-06 22:15:46,435 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:46,435 INFO  L93              Difference]: Finished difference Result 3278 states and 4800 transitions.
[2019-11-06 22:15:46,435 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:46,435 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 158
[2019-11-06 22:15:46,436 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:46,444 INFO  L225             Difference]: With dead ends: 3278
[2019-11-06 22:15:46,444 INFO  L226             Difference]: Without dead ends: 1499
[2019-11-06 22:15:46,448 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 22:15:46,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1499 states.
[2019-11-06 22:15:46,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1499.
[2019-11-06 22:15:46,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1499 states.
[2019-11-06 22:15:46,510 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2182 transitions.
[2019-11-06 22:15:46,510 INFO  L78                 Accepts]: Start accepts. Automaton has 1499 states and 2182 transitions. Word has length 158
[2019-11-06 22:15:46,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:46,511 INFO  L462      AbstractCegarLoop]: Abstraction has 1499 states and 2182 transitions.
[2019-11-06 22:15:46,511 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:46,511 INFO  L276                IsEmpty]: Start isEmpty. Operand 1499 states and 2182 transitions.
[2019-11-06 22:15:46,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2019-11-06 22:15:46,515 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:46,515 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, 1]
[2019-11-06 22:15:46,515 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:46,516 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:46,516 INFO  L82        PathProgramCache]: Analyzing trace with hash -528962491, now seen corresponding path program 1 times
[2019-11-06 22:15:46,516 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:46,516 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966340647]
[2019-11-06 22:15:46,516 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:46,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:46,813 WARN  L191               SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:46,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:46,883 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 22:15:46,884 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966340647]
[2019-11-06 22:15:46,885 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:46,885 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:46,886 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516070950]
[2019-11-06 22:15:46,886 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:46,886 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:46,887 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:46,887 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:46,887 INFO  L87              Difference]: Start difference. First operand 1499 states and 2182 transitions. Second operand 4 states.
[2019-11-06 22:15:48,571 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:48,572 INFO  L93              Difference]: Finished difference Result 3290 states and 4921 transitions.
[2019-11-06 22:15:48,572 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:48,572 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 159
[2019-11-06 22:15:48,573 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:48,583 INFO  L225             Difference]: With dead ends: 3290
[2019-11-06 22:15:48,584 INFO  L226             Difference]: Without dead ends: 1977
[2019-11-06 22:15:48,587 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 22:15:48,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1977 states.
[2019-11-06 22:15:48,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1933.
[2019-11-06 22:15:48,662 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1933 states.
[2019-11-06 22:15:48,669 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2888 transitions.
[2019-11-06 22:15:48,669 INFO  L78                 Accepts]: Start accepts. Automaton has 1933 states and 2888 transitions. Word has length 159
[2019-11-06 22:15:48,670 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:48,670 INFO  L462      AbstractCegarLoop]: Abstraction has 1933 states and 2888 transitions.
[2019-11-06 22:15:48,670 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:48,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 1933 states and 2888 transitions.
[2019-11-06 22:15:48,674 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2019-11-06 22:15:48,674 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:48,674 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, 1, 1, 1, 1]
[2019-11-06 22:15:48,675 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:48,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:48,675 INFO  L82        PathProgramCache]: Analyzing trace with hash 1484207381, now seen corresponding path program 1 times
[2019-11-06 22:15:48,675 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:48,675 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584632484]
[2019-11-06 22:15:48,676 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:48,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:49,001 WARN  L191               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:49,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:49,035 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 22:15:49,035 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584632484]
[2019-11-06 22:15:49,036 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:49,036 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:15:49,036 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526836230]
[2019-11-06 22:15:49,037 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:15:49,037 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:49,037 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:15:49,037 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:15:49,037 INFO  L87              Difference]: Start difference. First operand 1933 states and 2888 transitions. Second operand 4 states.
[2019-11-06 22:15:50,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:50,909 INFO  L93              Difference]: Finished difference Result 4690 states and 7155 transitions.
[2019-11-06 22:15:50,909 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-06 22:15:50,909 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 162
[2019-11-06 22:15:50,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:50,935 INFO  L225             Difference]: With dead ends: 4690
[2019-11-06 22:15:50,935 INFO  L226             Difference]: Without dead ends: 3027
[2019-11-06 22:15:50,940 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 22:15:50,944 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3027 states.
[2019-11-06 22:15:51,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 2711.
[2019-11-06 22:15:51,050 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2711 states.
[2019-11-06 22:15:51,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4151 transitions.
[2019-11-06 22:15:51,059 INFO  L78                 Accepts]: Start accepts. Automaton has 2711 states and 4151 transitions. Word has length 162
[2019-11-06 22:15:51,059 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:51,059 INFO  L462      AbstractCegarLoop]: Abstraction has 2711 states and 4151 transitions.
[2019-11-06 22:15:51,059 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-06 22:15:51,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 2711 states and 4151 transitions.
[2019-11-06 22:15:51,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2019-11-06 22:15:51,063 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:51,063 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, 1, 1, 1, 1]
[2019-11-06 22:15:51,063 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:51,064 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:51,064 INFO  L82        PathProgramCache]: Analyzing trace with hash 2071220188, now seen corresponding path program 1 times
[2019-11-06 22:15:51,064 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:51,064 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15452130]
[2019-11-06 22:15:51,064 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:51,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:51,567 WARN  L191               SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:51,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:51,680 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 22:15:51,681 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15452130]
[2019-11-06 22:15:51,681 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:51,681 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-11-06 22:15:51,682 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343661838]
[2019-11-06 22:15:51,683 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-11-06 22:15:51,683 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:51,683 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-11-06 22:15:51,685 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2019-11-06 22:15:51,685 INFO  L87              Difference]: Start difference. First operand 2711 states and 4151 transitions. Second operand 10 states.
[2019-11-06 22:15:51,974 WARN  L191               SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2019-11-06 22:15:53,940 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:53,940 INFO  L93              Difference]: Finished difference Result 9554 states and 14922 transitions.
[2019-11-06 22:15:53,941 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-06 22:15:53,941 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 162
[2019-11-06 22:15:53,941 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:53,973 INFO  L225             Difference]: With dead ends: 9554
[2019-11-06 22:15:53,973 INFO  L226             Difference]: Without dead ends: 7023
[2019-11-06 22:15:53,981 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2019-11-06 22:15:53,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7023 states.
[2019-11-06 22:15:54,289 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 5089.
[2019-11-06 22:15:54,289 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5089 states.
[2019-11-06 22:15:54,299 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 7829 transitions.
[2019-11-06 22:15:54,300 INFO  L78                 Accepts]: Start accepts. Automaton has 5089 states and 7829 transitions. Word has length 162
[2019-11-06 22:15:54,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:54,300 INFO  L462      AbstractCegarLoop]: Abstraction has 5089 states and 7829 transitions.
[2019-11-06 22:15:54,300 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-11-06 22:15:54,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 5089 states and 7829 transitions.
[2019-11-06 22:15:54,305 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2019-11-06 22:15:54,305 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:54,305 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, 1, 1, 1, 1]
[2019-11-06 22:15:54,305 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:54,306 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:54,306 INFO  L82        PathProgramCache]: Analyzing trace with hash 430958199, now seen corresponding path program 1 times
[2019-11-06 22:15:54,306 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:54,306 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75694431]
[2019-11-06 22:15:54,307 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:54,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:54,700 WARN  L191               SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:54,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:54,756 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 22:15:54,756 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75694431]
[2019-11-06 22:15:54,757 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:54,757 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:54,757 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774151617]
[2019-11-06 22:15:54,758 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:54,758 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:54,758 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:54,759 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:54,759 INFO  L87              Difference]: Start difference. First operand 5089 states and 7829 transitions. Second operand 5 states.
[2019-11-06 22:15:54,967 WARN  L191               SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 176
[2019-11-06 22:15:56,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:56,434 INFO  L93              Difference]: Finished difference Result 13547 states and 21235 transitions.
[2019-11-06 22:15:56,434 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-06 22:15:56,434 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 162
[2019-11-06 22:15:56,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:56,470 INFO  L225             Difference]: With dead ends: 13547
[2019-11-06 22:15:56,470 INFO  L226             Difference]: Without dead ends: 9797
[2019-11-06 22:15:56,480 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-11-06 22:15:56,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9797 states.
[2019-11-06 22:15:56,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 9795.
[2019-11-06 22:15:56,983 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9795 states.
[2019-11-06 22:15:56,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 15103 transitions.
[2019-11-06 22:15:56,993 INFO  L78                 Accepts]: Start accepts. Automaton has 9795 states and 15103 transitions. Word has length 162
[2019-11-06 22:15:56,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:15:56,994 INFO  L462      AbstractCegarLoop]: Abstraction has 9795 states and 15103 transitions.
[2019-11-06 22:15:56,994 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:15:56,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 9795 states and 15103 transitions.
[2019-11-06 22:15:57,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2019-11-06 22:15:57,001 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:15:57,001 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, 1, 1, 1, 1]
[2019-11-06 22:15:57,001 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:15:57,002 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:15:57,002 INFO  L82        PathProgramCache]: Analyzing trace with hash 169281566, now seen corresponding path program 1 times
[2019-11-06 22:15:57,002 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:15:57,002 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015060287]
[2019-11-06 22:15:57,002 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:15:57,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:57,369 WARN  L191               SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:15:57,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:15:57,414 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 22:15:57,414 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015060287]
[2019-11-06 22:15:57,414 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:15:57,415 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-06 22:15:57,415 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492081830]
[2019-11-06 22:15:57,415 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 22:15:57,415 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:15:57,416 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 22:15:57,416 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-06 22:15:57,416 INFO  L87              Difference]: Start difference. First operand 9795 states and 15103 transitions. Second operand 5 states.
[2019-11-06 22:15:59,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 22:15:59,879 INFO  L93              Difference]: Finished difference Result 25746 states and 39693 transitions.
[2019-11-06 22:15:59,879 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 22:15:59,879 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 162
[2019-11-06 22:15:59,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 22:15:59,917 INFO  L225             Difference]: With dead ends: 25746
[2019-11-06 22:15:59,917 INFO  L226             Difference]: Without dead ends: 15974
[2019-11-06 22:15:59,936 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 22:15:59,956 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15974 states.
[2019-11-06 22:16:00,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15974 to 15972.
[2019-11-06 22:16:00,628 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15972 states.
[2019-11-06 22:16:00,648 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15972 states to 15972 states and 24436 transitions.
[2019-11-06 22:16:00,648 INFO  L78                 Accepts]: Start accepts. Automaton has 15972 states and 24436 transitions. Word has length 162
[2019-11-06 22:16:00,648 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 22:16:00,648 INFO  L462      AbstractCegarLoop]: Abstraction has 15972 states and 24436 transitions.
[2019-11-06 22:16:00,649 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 22:16:00,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 15972 states and 24436 transitions.
[2019-11-06 22:16:00,657 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2019-11-06 22:16:00,657 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 22:16:00,658 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, 1, 1, 1, 1, 1, 1]
[2019-11-06 22:16:00,658 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 22:16:00,658 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 22:16:00,658 INFO  L82        PathProgramCache]: Analyzing trace with hash -1075293888, now seen corresponding path program 1 times
[2019-11-06 22:16:00,658 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 22:16:00,659 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761894220]
[2019-11-06 22:16:00,659 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 22:16:00,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:16:00,907 WARN  L191               SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-11-06 22:16:00,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 22:16:01,505 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 22:16:01,506 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761894220]
[2019-11-06 22:16:01,506 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 22:16:01,506 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 22:16:01,507 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802013460]
[2019-11-06 22:16:01,507 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-06 22:16:01,507 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 22:16:01,507 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-06 22:16:01,508 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-06 22:16:01,508 INFO  L87              Difference]: Start difference. First operand 15972 states and 24436 transitions. Second operand 4 states.