/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-19 02:08:28,211 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-19 02:08:28,214 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-19 02:08:28,254 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-19 02:08:28,254 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-19 02:08:28,264 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-19 02:08:28,266 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-19 02:08:28,269 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-19 02:08:28,272 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-19 02:08:28,272 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-19 02:08:28,274 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-19 02:08:28,275 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-19 02:08:28,276 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-19 02:08:28,280 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-19 02:08:28,282 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-19 02:08:28,283 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-19 02:08:28,284 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-19 02:08:28,285 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-19 02:08:28,287 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-19 02:08:28,294 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-19 02:08:28,297 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-19 02:08:28,298 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-19 02:08:28,298 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-19 02:08:28,299 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-19 02:08:28,310 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-19 02:08:28,310 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-19 02:08:28,310 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-19 02:08:28,311 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-19 02:08:28,311 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-19 02:08:28,315 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-19 02:08:28,316 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-19 02:08:28,316 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-19 02:08:28,317 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-19 02:08:28,318 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-19 02:08:28,319 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-19 02:08:28,319 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-19 02:08:28,319 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-19 02:08:28,320 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-19 02:08:28,320 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-19 02:08:28,320 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-19 02:08:28,321 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-19 02:08:28,322 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-19 02:08:28,344 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-19 02:08:28,344 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-19 02:08:28,346 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-19 02:08:28,346 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-19 02:08:28,346 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-19 02:08:28,346 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-19 02:08:28,346 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-19 02:08:28,347 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-19 02:08:28,347 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-19 02:08:28,347 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-19 02:08:28,347 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-19 02:08:28,347 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-19 02:08:28,347 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-19 02:08:28,348 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-19 02:08:28,348 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-19 02:08:28,348 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-19 02:08:28,348 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-19 02:08:28,348 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-19 02:08:28,349 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-19 02:08:28,349 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-19 02:08:28,349 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-19 02:08:28,349 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-19 02:08:28,349 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-19 02:08:28,350 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-19 02:08:28,350 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-19 02:08:28,350 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-19 02:08:28,350 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-19 02:08:28,350 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-19 02:08:28,350 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-19 02:08:28,351 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;
[2020-08-19 02:08:28,635 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-19 02:08:28,649 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-19 02:08:28,655 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-19 02:08:28,656 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-19 02:08:28,657 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-19 02:08:28,658 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-08-19 02:08:28,717 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9450a6cd/089a107f3f11436ca942f7051f0ee4c6/FLAG297456555
[2020-08-19 02:08:29,424 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-19 02:08:29,425 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-08-19 02:08:29,444 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9450a6cd/089a107f3f11436ca942f7051f0ee4c6/FLAG297456555
[2020-08-19 02:08:29,552 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9450a6cd/089a107f3f11436ca942f7051f0ee4c6
[2020-08-19 02:08:29,561 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-19 02:08:29,563 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-19 02:08:29,565 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-19 02:08:29,565 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-19 02:08:29,569 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-19 02:08:29,570 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:08:29" (1/1) ...
[2020-08-19 02:08:29,573 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4603aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:29, skipping insertion in model container
[2020-08-19 02:08:29,573 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:08:29" (1/1) ...
[2020-08-19 02:08:29,581 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-19 02:08:29,745 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-19 02:08:31,392 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-19 02:08:31,412 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-19 02:08:32,294 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-19 02:08:32,317 INFO  L208         MainTranslator]: Completed translation
[2020-08-19 02:08:32,317 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32 WrapperNode
[2020-08-19 02:08:32,317 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-19 02:08:32,318 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-19 02:08:32,318 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-19 02:08:32,318 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-19 02:08:32,331 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,331 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,369 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,370 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,463 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,499 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,521 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
[2020-08-19 02:08:32,545 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-19 02:08:32,545 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-19 02:08:32,545 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-19 02:08:32,546 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-19 02:08:32,547 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-19 02:08:32,629 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-19 02:08:32,629 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-19 02:08:32,630 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-19 02:08:32,630 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-19 02:08:32,631 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-19 02:08:32,631 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-08-19 02:08:32,631 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2020-08-19 02:08:32,632 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-08-19 02:08:32,632 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-08-19 02:08:32,633 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-08-19 02:08:32,633 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-19 02:08:32,633 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-08-19 02:08:32,633 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-08-19 02:08:32,633 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-08-19 02:08:32,634 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-08-19 02:08:32,634 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-08-19 02:08:32,635 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2020-08-19 02:08:32,635 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-08-19 02:08:32,635 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-08-19 02:08:32,635 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-19 02:08:32,636 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-19 02:08:32,636 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-19 02:08:35,714 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-19 02:08:35,714 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-08-19 02:08:35,731 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:08:35 BoogieIcfgContainer
[2020-08-19 02:08:35,731 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-19 02:08:35,735 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-19 02:08:35,736 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-19 02:08:35,739 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-19 02:08:35,739 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:08:29" (1/3) ...
[2020-08-19 02:08:35,740 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68031da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:08:35, skipping insertion in model container
[2020-08-19 02:08:35,740 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:08:32" (2/3) ...
[2020-08-19 02:08:35,741 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68031da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:08:35, skipping insertion in model container
[2020-08-19 02:08:35,741 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:08:35" (3/3) ...
[2020-08-19 02:08:35,743 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-08-19 02:08:35,751 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-19 02:08:35,760 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations.
[2020-08-19 02:08:35,775 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2020-08-19 02:08:35,804 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-19 02:08:35,804 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-19 02:08:35,804 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-19 02:08:35,804 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-19 02:08:35,804 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-19 02:08:35,804 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-19 02:08:35,805 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-19 02:08:35,805 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-19 02:08:35,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 1027 states.
[2020-08-19 02:08:35,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-19 02:08:35,876 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 02:08:35,877 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-19 02:08:35,878 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 02:08:35,884 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 02:08:35,884 INFO  L82        PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times
[2020-08-19 02:08:35,891 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 02:08:35,892 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664453457]
[2020-08-19 02:08:35,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 02:08:36,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:08:37,542 WARN  L193               SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-19 02:08:37,544 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 02:08:37,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:08:37,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 02:08:37,738 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664453457]
[2020-08-19 02:08:37,740 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 02:08:37,740 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-19 02:08:37,741 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35160153]
[2020-08-19 02:08:37,749 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-19 02:08:37,750 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 02:08:37,764 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-19 02:08:37,765 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-19 02:08:37,767 INFO  L87              Difference]: Start difference. First operand 1027 states. Second operand 4 states.
[2020-08-19 02:08:38,374 WARN  L193               SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 323
[2020-08-19 02:08:45,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 02:08:45,847 INFO  L93              Difference]: Finished difference Result 1794 states and 3183 transitions.
[2020-08-19 02:08:45,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-19 02:08:45,849 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-08-19 02:08:45,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 02:08:45,878 INFO  L225             Difference]: With dead ends: 1794
[2020-08-19 02:08:45,878 INFO  L226             Difference]: Without dead ends: 1483
[2020-08-19 02:08:45,885 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-19 02:08:45,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1483 states.
[2020-08-19 02:08:46,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481.
[2020-08-19 02:08:46,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1481 states.
[2020-08-19 02:08:46,055 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions.
[2020-08-19 02:08:46,057 INFO  L78                 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327
[2020-08-19 02:08:46,063 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 02:08:46,064 INFO  L479      AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions.
[2020-08-19 02:08:46,064 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-19 02:08:46,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions.
[2020-08-19 02:08:46,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-19 02:08:46,075 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 02:08:46,075 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-19 02:08:46,076 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-19 02:08:46,076 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 02:08:46,077 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 02:08:46,077 INFO  L82        PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times
[2020-08-19 02:08:46,077 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 02:08:46,078 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777887268]
[2020-08-19 02:08:46,078 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 02:08:46,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:08:47,517 WARN  L193               SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-19 02:08:47,518 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 02:08:47,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:08:47,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 02:08:47,862 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777887268]
[2020-08-19 02:08:47,862 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 02:08:47,863 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-19 02:08:47,863 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442018984]
[2020-08-19 02:08:47,868 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-19 02:08:47,869 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 02:08:47,869 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-19 02:08:47,869 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-19 02:08:47,870 INFO  L87              Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 4 states.
[2020-08-19 02:08:48,388 WARN  L193               SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 323
[2020-08-19 02:08:55,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 02:08:55,086 INFO  L93              Difference]: Finished difference Result 2844 states and 4401 transitions.
[2020-08-19 02:08:55,086 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-19 02:08:55,086 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-08-19 02:08:55,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 02:08:55,100 INFO  L225             Difference]: With dead ends: 2844
[2020-08-19 02:08:55,100 INFO  L226             Difference]: Without dead ends: 2425
[2020-08-19 02:08:55,108 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-19 02:08:55,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2425 states.
[2020-08-19 02:08:55,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423.
[2020-08-19 02:08:55,229 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2423 states.
[2020-08-19 02:08:55,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions.
[2020-08-19 02:08:55,245 INFO  L78                 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327
[2020-08-19 02:08:55,246 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 02:08:55,246 INFO  L479      AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions.
[2020-08-19 02:08:55,247 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-19 02:08:55,247 INFO  L276                IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions.
[2020-08-19 02:08:55,264 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-19 02:08:55,271 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 02:08:55,272 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-19 02:08:55,272 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-19 02:08:55,276 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 02:08:55,276 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 02:08:55,277 INFO  L82        PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times
[2020-08-19 02:08:55,277 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 02:08:55,277 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060297207]
[2020-08-19 02:08:55,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 02:08:55,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:08:56,630 WARN  L193               SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-19 02:08:56,633 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 02:08:56,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:08:56,835 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 02:08:56,836 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060297207]
[2020-08-19 02:08:56,836 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 02:08:56,836 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-19 02:08:56,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041863282]
[2020-08-19 02:08:56,837 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-19 02:08:56,839 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 02:08:56,840 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-19 02:08:56,840 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-19 02:08:56,840 INFO  L87              Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 4 states.
[2020-08-19 02:08:57,411 WARN  L193               SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 323
[2020-08-19 02:09:03,518 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 02:09:03,519 INFO  L93              Difference]: Finished difference Result 5038 states and 7854 transitions.
[2020-08-19 02:09:03,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-19 02:09:03,520 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-08-19 02:09:03,521 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 02:09:03,541 INFO  L225             Difference]: With dead ends: 5038
[2020-08-19 02:09:03,542 INFO  L226             Difference]: Without dead ends: 4361
[2020-08-19 02:09:03,545 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-19 02:09:03,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4361 states.
[2020-08-19 02:09:03,665 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359.
[2020-08-19 02:09:03,666 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4359 states.
[2020-08-19 02:09:03,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions.
[2020-08-19 02:09:03,681 INFO  L78                 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327
[2020-08-19 02:09:03,682 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 02:09:03,682 INFO  L479      AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions.
[2020-08-19 02:09:03,682 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-19 02:09:03,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions.
[2020-08-19 02:09:03,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-08-19 02:09:03,695 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 02:09:03,695 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-19 02:09:03,696 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-19 02:09:03,696 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 02:09:03,696 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 02:09:03,696 INFO  L82        PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times
[2020-08-19 02:09:03,697 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 02:09:03,697 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104344216]
[2020-08-19 02:09:03,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 02:09:04,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:09:04,883 WARN  L193               SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-19 02:09:04,884 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 02:09:04,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:09:05,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 02:09:05,050 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104344216]
[2020-08-19 02:09:05,050 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 02:09:05,051 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-19 02:09:05,051 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027021941]
[2020-08-19 02:09:05,051 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-19 02:09:05,052 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 02:09:05,052 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-19 02:09:05,052 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-19 02:09:05,052 INFO  L87              Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 5 states.
[2020-08-19 02:09:14,415 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 02:09:14,416 INFO  L93              Difference]: Finished difference Result 12898 states and 19904 transitions.
[2020-08-19 02:09:14,417 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-19 02:09:14,417 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 327
[2020-08-19 02:09:14,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 02:09:14,467 INFO  L225             Difference]: With dead ends: 12898
[2020-08-19 02:09:14,468 INFO  L226             Difference]: Without dead ends: 8554
[2020-08-19 02:09:14,483 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-19 02:09:14,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8554 states.
[2020-08-19 02:09:14,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8554 to 8347.
[2020-08-19 02:09:14,730 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8347 states.
[2020-08-19 02:09:14,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 12864 transitions.
[2020-08-19 02:09:14,751 INFO  L78                 Accepts]: Start accepts. Automaton has 8347 states and 12864 transitions. Word has length 327
[2020-08-19 02:09:14,751 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 02:09:14,752 INFO  L479      AbstractCegarLoop]: Abstraction has 8347 states and 12864 transitions.
[2020-08-19 02:09:14,752 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-19 02:09:14,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 8347 states and 12864 transitions.
[2020-08-19 02:09:14,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2020-08-19 02:09:14,769 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 02:09:14,770 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-19 02:09:14,770 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-19 02:09:14,770 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 02:09:14,771 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 02:09:14,771 INFO  L82        PathProgramCache]: Analyzing trace with hash 318218777, now seen corresponding path program 1 times
[2020-08-19 02:09:14,771 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 02:09:14,771 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124563477]
[2020-08-19 02:09:14,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 02:09:14,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:09:15,519 WARN  L193               SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-19 02:09:15,521 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 02:09:15,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:09:15,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 02:09:15,670 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124563477]
[2020-08-19 02:09:15,670 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 02:09:15,671 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-19 02:09:15,671 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185023015]
[2020-08-19 02:09:15,672 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-19 02:09:15,672 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 02:09:15,672 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-19 02:09:15,672 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-19 02:09:15,673 INFO  L87              Difference]: Start difference. First operand 8347 states and 12864 transitions. Second operand 4 states.
[2020-08-19 02:09:26,407 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 02:09:26,407 INFO  L93              Difference]: Finished difference Result 24596 states and 37840 transitions.
[2020-08-19 02:09:26,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-19 02:09:26,408 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 329
[2020-08-19 02:09:26,408 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 02:09:26,458 INFO  L225             Difference]: With dead ends: 24596
[2020-08-19 02:09:26,459 INFO  L226             Difference]: Without dead ends: 16378
[2020-08-19 02:09:26,477 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-19 02:09:26,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16378 states.
[2020-08-19 02:09:26,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16378 to 16171.
[2020-08-19 02:09:26,934 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16171 states.
[2020-08-19 02:09:26,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 24823 transitions.
[2020-08-19 02:09:26,963 INFO  L78                 Accepts]: Start accepts. Automaton has 16171 states and 24823 transitions. Word has length 329
[2020-08-19 02:09:26,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 02:09:26,964 INFO  L479      AbstractCegarLoop]: Abstraction has 16171 states and 24823 transitions.
[2020-08-19 02:09:26,964 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-19 02:09:26,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 16171 states and 24823 transitions.
[2020-08-19 02:09:26,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2020-08-19 02:09:26,995 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 02:09:26,995 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-19 02:09:26,996 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-19 02:09:27,000 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 02:09:27,001 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 02:09:27,002 INFO  L82        PathProgramCache]: Analyzing trace with hash -1871319948, now seen corresponding path program 1 times
[2020-08-19 02:09:27,002 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 02:09:27,002 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471410758]
[2020-08-19 02:09:27,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 02:09:27,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:09:27,588 WARN  L193               SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-08-19 02:09:27,591 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 02:09:27,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 02:09:27,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 02:09:27,799 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471410758]
[2020-08-19 02:09:27,800 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 02:09:27,800 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-19 02:09:27,800 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71439216]
[2020-08-19 02:09:27,801 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-19 02:09:27,801 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 02:09:27,802 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-19 02:09:27,802 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-19 02:09:27,802 INFO  L87              Difference]: Start difference. First operand 16171 states and 24823 transitions. Second operand 4 states.