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/eca-rers2012/Problem16_label36.c


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:04:34,641 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 22:04:34,644 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-14 22:04:34,661 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-14 22:04:34,662 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-14 22:04:34,664 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-14 22:04:34,665 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-14 22:04:34,675 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-14 22:04:34,678 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-14 22:04:34,682 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-14 22:04:34,684 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-14 22:04:34,686 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-14 22:04:34,686 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-14 22:04:34,688 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-14 22:04:34,690 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-14 22:04:34,692 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-14 22:04:34,693 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-14 22:04:34,694 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-14 22:04:34,695 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-14 22:04:34,700 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-14 22:04:34,704 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-14 22:04:34,705 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-14 22:04:34,706 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-14 22:04:34,707 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-14 22:04:34,708 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-14 22:04:34,709 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-14 22:04:34,709 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-14 22:04:34,709 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-14 22:04:34,710 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-14 22:04:34,711 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-14 22:04:34,711 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-14 22:04:34,712 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-14 22:04:34,712 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-14 22:04:34,713 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-14 22:04:34,714 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-14 22:04:34,714 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-14 22:04:34,715 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-14 22:04:34,715 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-14 22:04:34,715 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-14 22:04:34,716 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-14 22:04:34,717 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-14 22:04:34,718 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
[2019-10-14 22:04:34,731 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:04:34,732 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:04:34,733 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:04:34,733 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:04:34,733 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:04:34,733 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:04:34,734 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:04:34,734 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:04:34,734 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:04:34,734 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:04:34,734 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:04:34,735 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:04:34,735 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:04:34,735 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:04:34,735 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:04:34,735 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:04:34,735 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:04:34,736 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:04:34,736 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:04:34,736 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:04:34,736 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:04:34,736 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:04:34,737 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:04:34,737 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:04:34,737 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:04:34,737 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:04:34,737 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:04:34,738 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:04:34,738 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:04:35,020 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:04:35,032 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:04:35,036 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:04:35,037 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:04:35,038 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:04:35,039 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label36.c
[2019-10-14 22:04:35,117 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48556499/8938c20358754a4db34320f5c9c3643b/FLAGeb076eeb0
[2019-10-14 22:04:35,839 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:04:35,840 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label36.c
[2019-10-14 22:04:35,864 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48556499/8938c20358754a4db34320f5c9c3643b/FLAGeb076eeb0
[2019-10-14 22:04:36,031 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48556499/8938c20358754a4db34320f5c9c3643b
[2019-10-14 22:04:36,041 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:04:36,043 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:04:36,046 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:04:36,046 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:04:36,051 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:04:36,053 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:36" (1/1) ...
[2019-10-14 22:04:36,056 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517e93e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:36, skipping insertion in model container
[2019-10-14 22:04:36,057 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:36" (1/1) ...
[2019-10-14 22:04:36,065 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:04:36,151 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:04:37,049 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:04:37,066 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:04:37,416 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:04:37,437 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:04:37,438 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37 WrapperNode
[2019-10-14 22:04:37,438 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:04:37,439 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:04:37,439 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:04:37,439 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:04:37,455 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,455 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,510 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,511 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,587 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,616 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,631 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (1/1) ...
[2019-10-14 22:04:37,647 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:04:37,647 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:04:37,648 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:04:37,648 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:04:37,649 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (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
[2019-10-14 22:04:37,702 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:04:37,702 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:04:37,702 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:04:37,702 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:04:37,703 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:04:37,703 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:04:37,703 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:04:37,703 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:04:37,703 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:04:37,704 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:04:37,704 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:04:37,704 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:04:37,704 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:04:40,072 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:04:40,073 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:04:40,075 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:40 BoogieIcfgContainer
[2019-10-14 22:04:40,075 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:04:40,077 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:04:40,077 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:04:40,081 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:04:40,081 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:36" (1/3) ...
[2019-10-14 22:04:40,082 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798bc2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:40, skipping insertion in model container
[2019-10-14 22:04:40,082 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:37" (2/3) ...
[2019-10-14 22:04:40,083 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798bc2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:40, skipping insertion in model container
[2019-10-14 22:04:40,083 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:40" (3/3) ...
[2019-10-14 22:04:40,093 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem16_label36.c
[2019-10-14 22:04:40,111 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:04:40,122 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:04:40,134 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:04:40,178 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:04:40,179 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:04:40,179 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:04:40,179 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:04:40,179 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:04:40,179 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:04:40,179 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:04:40,179 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:04:40,204 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states.
[2019-10-14 22:04:40,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2019-10-14 22:04:40,213 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:40,214 INFO  L380         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]
[2019-10-14 22:04:40,216 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:40,222 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:40,223 INFO  L82        PathProgramCache]: Analyzing trace with hash -1949415187, now seen corresponding path program 1 times
[2019-10-14 22:04:40,232 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:40,232 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090682763]
[2019-10-14 22:04:40,233 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:40,233 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:40,233 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:40,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:40,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:40,588 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:04:40,589 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090682763]
[2019-10-14 22:04:40,590 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:04:40,590 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:04:40,591 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936155492]
[2019-10-14 22:04:40,596 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:04:40,596 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:40,610 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:04:40,612 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:04:40,614 INFO  L87              Difference]: Start difference. First operand 409 states. Second operand 5 states.
[2019-10-14 22:04:45,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:45,604 INFO  L93              Difference]: Finished difference Result 1515 states and 2848 transitions.
[2019-10-14 22:04:45,604 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 22:04:45,605 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 42
[2019-10-14 22:04:45,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:45,642 INFO  L225             Difference]: With dead ends: 1515
[2019-10-14 22:04:45,643 INFO  L226             Difference]: Without dead ends: 1038
[2019-10-14 22:04:45,654 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:04:45,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1038 states.
[2019-10-14 22:04:45,765 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031.
[2019-10-14 22:04:45,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1031 states.
[2019-10-14 22:04:45,772 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1642 transitions.
[2019-10-14 22:04:45,774 INFO  L78                 Accepts]: Start accepts. Automaton has 1031 states and 1642 transitions. Word has length 42
[2019-10-14 22:04:45,775 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:45,775 INFO  L462      AbstractCegarLoop]: Abstraction has 1031 states and 1642 transitions.
[2019-10-14 22:04:45,775 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:45,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 1031 states and 1642 transitions.
[2019-10-14 22:04:45,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2019-10-14 22:04:45,788 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:45,788 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:45,789 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:45,789 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:45,789 INFO  L82        PathProgramCache]: Analyzing trace with hash -525346387, now seen corresponding path program 1 times
[2019-10-14 22:04:45,790 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:45,791 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43544455]
[2019-10-14 22:04:45,791 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:45,791 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:45,792 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:45,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:46,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:46,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:46,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:46,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 145 backedges. 70 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 22:04:46,248 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43544455]
[2019-10-14 22:04:46,249 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514452101]
[2019-10-14 22:04:46,249 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:46,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:46,369 INFO  L256         TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 22:04:46,388 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:46,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 145 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2019-10-14 22:04:46,551 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 22:04:46,551 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9
[2019-10-14 22:04:46,552 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924796626]
[2019-10-14 22:04:46,557 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:04:46,557 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:46,557 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:04:46,558 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 22:04:46,558 INFO  L87              Difference]: Start difference. First operand 1031 states and 1642 transitions. Second operand 5 states.
[2019-10-14 22:04:49,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:49,809 INFO  L93              Difference]: Finished difference Result 3131 states and 5064 transitions.
[2019-10-14 22:04:49,810 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-14 22:04:49,810 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 224
[2019-10-14 22:04:49,811 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:49,828 INFO  L225             Difference]: With dead ends: 3131
[2019-10-14 22:04:49,828 INFO  L226             Difference]: Without dead ends: 2106
[2019-10-14 22:04:49,834 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:04:49,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2106 states.
[2019-10-14 22:04:49,916 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2083.
[2019-10-14 22:04:49,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2083 states.
[2019-10-14 22:04:49,930 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3188 transitions.
[2019-10-14 22:04:49,931 INFO  L78                 Accepts]: Start accepts. Automaton has 2083 states and 3188 transitions. Word has length 224
[2019-10-14 22:04:49,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:49,932 INFO  L462      AbstractCegarLoop]: Abstraction has 2083 states and 3188 transitions.
[2019-10-14 22:04:49,932 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:49,932 INFO  L276                IsEmpty]: Start isEmpty. Operand 2083 states and 3188 transitions.
[2019-10-14 22:04:49,940 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2019-10-14 22:04:49,940 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:49,940 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:50,147 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:50,148 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:50,148 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:50,148 INFO  L82        PathProgramCache]: Analyzing trace with hash 1071298588, now seen corresponding path program 1 times
[2019-10-14 22:04:50,149 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:50,149 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150461554]
[2019-10-14 22:04:50,149 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:50,149 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:50,150 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:50,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:50,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:50,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:50,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:50,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 149 backedges. 70 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 22:04:50,518 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150461554]
[2019-10-14 22:04:50,518 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983167480]
[2019-10-14 22:04:50,519 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:50,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:50,610 INFO  L256         TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 22:04:50,630 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:50,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 149 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2019-10-14 22:04:50,700 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 22:04:50,700 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-14 22:04:50,700 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049660175]
[2019-10-14 22:04:50,701 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:04:50,702 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:50,702 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:04:50,702 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:50,702 INFO  L87              Difference]: Start difference. First operand 2083 states and 3188 transitions. Second operand 5 states.
[2019-10-14 22:04:53,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:53,802 INFO  L93              Difference]: Finished difference Result 6311 states and 9957 transitions.
[2019-10-14 22:04:53,808 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-14 22:04:53,808 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 231
[2019-10-14 22:04:53,809 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:53,837 INFO  L225             Difference]: With dead ends: 6311
[2019-10-14 22:04:53,837 INFO  L226             Difference]: Without dead ends: 4234
[2019-10-14 22:04:53,844 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-14 22:04:53,850 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4234 states.
[2019-10-14 22:04:53,975 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4198.
[2019-10-14 22:04:53,975 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4198 states.
[2019-10-14 22:04:53,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 5792 transitions.
[2019-10-14 22:04:53,994 INFO  L78                 Accepts]: Start accepts. Automaton has 4198 states and 5792 transitions. Word has length 231
[2019-10-14 22:04:53,996 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:53,996 INFO  L462      AbstractCegarLoop]: Abstraction has 4198 states and 5792 transitions.
[2019-10-14 22:04:53,996 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:53,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 4198 states and 5792 transitions.
[2019-10-14 22:04:54,002 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2019-10-14 22:04:54,002 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:54,003 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:54,207 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:54,207 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:54,207 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:54,207 INFO  L82        PathProgramCache]: Analyzing trace with hash 1503875532, now seen corresponding path program 1 times
[2019-10-14 22:04:54,208 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:54,208 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46069811]
[2019-10-14 22:04:54,208 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:54,208 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:54,209 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:54,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:54,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:54,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:54,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:54,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 161 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-14 22:04:54,792 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46069811]
[2019-10-14 22:04:54,792 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628839905]
[2019-10-14 22:04:54,793 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:54,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:54,907 INFO  L256         TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:54,913 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:55,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:04:55,012 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:55,012 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-10-14 22:04:55,013 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635588496]
[2019-10-14 22:04:55,014 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-14 22:04:55,015 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:55,015 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-14 22:04:55,015 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:04:55,015 INFO  L87              Difference]: Start difference. First operand 4198 states and 5792 transitions. Second operand 12 states.
[2019-10-14 22:05:02,713 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:05:02,713 INFO  L93              Difference]: Finished difference Result 13272 states and 19295 transitions.
[2019-10-14 22:05:02,714 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2019-10-14 22:05:02,714 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 271
[2019-10-14 22:05:02,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:05:02,751 INFO  L225             Difference]: With dead ends: 13272
[2019-10-14 22:05:02,752 INFO  L226             Difference]: Without dead ends: 7642
[2019-10-14 22:05:02,769 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122
[2019-10-14 22:05:02,778 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7642 states.
[2019-10-14 22:05:02,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7642 to 6236.
[2019-10-14 22:05:02,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6236 states.
[2019-10-14 22:05:02,937 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 7162 transitions.
[2019-10-14 22:05:02,938 INFO  L78                 Accepts]: Start accepts. Automaton has 6236 states and 7162 transitions. Word has length 271
[2019-10-14 22:05:02,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:05:02,939 INFO  L462      AbstractCegarLoop]: Abstraction has 6236 states and 7162 transitions.
[2019-10-14 22:05:02,940 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-10-14 22:05:02,940 INFO  L276                IsEmpty]: Start isEmpty. Operand 6236 states and 7162 transitions.
[2019-10-14 22:05:02,954 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 541
[2019-10-14 22:05:02,954 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:05:02,955 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:05:03,164 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:05:03,167 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:05:03,167 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:05:03,168 INFO  L82        PathProgramCache]: Analyzing trace with hash -1688765829, now seen corresponding path program 1 times
[2019-10-14 22:05:03,168 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:05:03,168 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279868416]
[2019-10-14 22:05:03,168 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:03,169 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:03,169 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:05:03,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:03,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:03,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:03,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:03,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:03,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:03,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 835 backedges. 140 proven. 345 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2019-10-14 22:05:03,888 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279868416]
[2019-10-14 22:05:03,889 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357026787]
[2019-10-14 22:05:03,889 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:05:04,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:04,065 INFO  L256         TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 22:05:04,073 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:05:04,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 835 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked.
[2019-10-14 22:05:04,371 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 22:05:04,372 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-14 22:05:04,372 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527270009]
[2019-10-14 22:05:04,373 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:05:04,373 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:05:04,373 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:05:04,373 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:05:04,374 INFO  L87              Difference]: Start difference. First operand 6236 states and 7162 transitions. Second operand 5 states.
[2019-10-14 22:05:06,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:05:06,079 INFO  L93              Difference]: Finished difference Result 13846 states and 15934 transitions.
[2019-10-14 22:05:06,082 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-14 22:05:06,082 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 540
[2019-10-14 22:05:06,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:05:06,112 INFO  L225             Difference]: With dead ends: 13846
[2019-10-14 22:05:06,112 INFO  L226             Difference]: Without dead ends: 7616
[2019-10-14 22:05:06,126 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:05:06,184 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7616 states.
[2019-10-14 22:05:06,322 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7616 to 7598.
[2019-10-14 22:05:06,323 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7598 states.
[2019-10-14 22:05:06,336 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 8435 transitions.
[2019-10-14 22:05:06,336 INFO  L78                 Accepts]: Start accepts. Automaton has 7598 states and 8435 transitions. Word has length 540
[2019-10-14 22:05:06,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:05:06,337 INFO  L462      AbstractCegarLoop]: Abstraction has 7598 states and 8435 transitions.
[2019-10-14 22:05:06,337 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:05:06,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 7598 states and 8435 transitions.
[2019-10-14 22:05:06,371 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 655
[2019-10-14 22:05:06,371 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:05:06,372 INFO  L380         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:05:06,578 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:05:06,578 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:05:06,578 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:05:06,579 INFO  L82        PathProgramCache]: Analyzing trace with hash 621076479, now seen corresponding path program 1 times
[2019-10-14 22:05:06,579 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:05:06,579 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468094041]
[2019-10-14 22:05:06,580 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:06,580 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:06,580 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:05:06,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:06,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:06,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:06,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:07,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:07,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:07,568 INFO  L134       CoverageAnalysis]: Checked inductivity of 838 backedges. 260 proven. 221 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked.
[2019-10-14 22:05:07,569 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468094041]
[2019-10-14 22:05:07,569 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194047306]
[2019-10-14 22:05:07,569 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:05:07,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:07,748 INFO  L256         TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:05:07,759 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:05:08,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 838 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked.
[2019-10-14 22:05:08,146 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:05:08,146 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-14 22:05:08,146 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474724287]
[2019-10-14 22:05:08,150 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 22:05:08,150 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:05:08,150 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 22:05:08,151 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:05:08,151 INFO  L87              Difference]: Start difference. First operand 7598 states and 8435 transitions. Second operand 11 states.