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/Problem11_label16.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:59:45,384 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:59:45,387 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 17:59:45,403 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 17:59:45,404 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 17:59:45,406 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 17:59:45,408 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 17:59:45,417 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 17:59:45,419 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 17:59:45,421 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 17:59:45,423 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 17:59:45,424 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 17:59:45,424 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 17:59:45,427 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 17:59:45,429 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 17:59:45,431 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 17:59:45,433 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 17:59:45,437 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 17:59:45,439 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 17:59:45,444 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 17:59:45,448 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 17:59:45,451 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 17:59:45,454 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 17:59:45,455 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 17:59:45,459 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 17:59:45,459 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 17:59:45,459 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 17:59:45,461 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 17:59:45,462 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 17:59:45,463 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 17:59:45,463 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 17:59:45,466 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 17:59:45,467 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 17:59:45,468 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 17:59:45,469 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 17:59:45,470 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 17:59:45,470 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 17:59:45,470 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 17:59:45,471 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 17:59:45,471 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 17:59:45,473 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 17:59:45,473 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
[2019-10-13 17:59:45,502 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:59:45,502 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:59:45,504 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:59:45,504 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:59:45,507 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:59:45,508 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:59:45,508 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:59:45,508 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:59:45,508 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:59:45,508 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:59:45,508 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:59:45,509 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:59:45,509 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:59:45,509 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:59:45,511 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:59:45,511 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:59:45,511 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:59:45,511 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:59:45,512 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:59:45,512 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:59:45,512 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:59:45,512 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:59:45,514 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:59:45,515 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:59:45,515 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:59:45,515 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:59:45,515 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:59:45,516 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:59:45,517 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:59:45,815 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:59:45,833 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:59:45,837 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:59:45,839 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:59:45,839 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:59:45,840 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16.c
[2019-10-13 17:59:45,916 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e7110d/dc6f900072fd4421b7399dd2376b7129/FLAG3cfb2930c
[2019-10-13 17:59:46,527 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:59:46,531 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16.c
[2019-10-13 17:59:46,561 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e7110d/dc6f900072fd4421b7399dd2376b7129/FLAG3cfb2930c
[2019-10-13 17:59:46,797 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e7110d/dc6f900072fd4421b7399dd2376b7129
[2019-10-13 17:59:46,807 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:59:46,809 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:59:46,812 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:59:46,812 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:59:46,816 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:59:46,817 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:46" (1/1) ...
[2019-10-13 17:59:46,819 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7688e8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:46, skipping insertion in model container
[2019-10-13 17:59:46,819 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:46" (1/1) ...
[2019-10-13 17:59:46,827 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:59:46,890 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:59:47,525 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:59:47,535 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:59:47,847 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:59:47,876 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:59:47,877 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47 WrapperNode
[2019-10-13 17:59:47,877 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:59:47,879 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:59:47,879 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:59:47,879 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:59:47,899 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:47,900 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:47,953 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:47,954 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:48,043 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:48,075 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:48,099 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (1/1) ...
[2019-10-13 17:59:48,113 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:59:48,114 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:59:48,114 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:59:48,114 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:59:48,115 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (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
[2019-10-13 17:59:48,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:59:48,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:59:48,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:59:48,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:59:48,185 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:59:48,186 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:59:48,186 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:59:48,186 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:59:48,187 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:59:48,187 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:59:48,187 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:59:50,027 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:59:50,027 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:59:50,031 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:50 BoogieIcfgContainer
[2019-10-13 17:59:50,033 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:59:50,034 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:59:50,038 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:59:50,041 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:59:50,042 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:59:46" (1/3) ...
[2019-10-13 17:59:50,043 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f22453f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:50, skipping insertion in model container
[2019-10-13 17:59:50,043 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:47" (2/3) ...
[2019-10-13 17:59:50,044 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f22453f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:50, skipping insertion in model container
[2019-10-13 17:59:50,045 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:50" (3/3) ...
[2019-10-13 17:59:50,057 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label16.c
[2019-10-13 17:59:50,070 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:59:50,082 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:59:50,097 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:59:50,140 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:59:50,140 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:59:50,140 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:59:50,140 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:59:50,140 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:59:50,141 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:59:50,141 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:59:50,141 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:59:50,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-13 17:59:50,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2019-10-13 17:59:50,209 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:50,210 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, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:50,212 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:50,219 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:50,219 INFO  L82        PathProgramCache]: Analyzing trace with hash -467621694, now seen corresponding path program 1 times
[2019-10-13 17:59:50,229 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:50,229 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226995990]
[2019-10-13 17:59:50,229 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:50,229 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:50,230 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:50,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:50,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:50,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:50,738 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226995990]
[2019-10-13 17:59:50,739 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:59:50,739 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:59:50,740 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745777285]
[2019-10-13 17:59:50,745 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:59:50,745 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:50,760 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:59:50,761 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:59:50,764 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-13 17:59:54,299 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:54,299 INFO  L93              Difference]: Finished difference Result 993 states and 1777 transitions.
[2019-10-13 17:59:54,300 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:59:54,302 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 49
[2019-10-13 17:59:54,303 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:54,323 INFO  L225             Difference]: With dead ends: 993
[2019-10-13 17:59:54,324 INFO  L226             Difference]: Without dead ends: 632
[2019-10-13 17:59:54,334 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:54,353 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 632 states.
[2019-10-13 17:59:54,427 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 628.
[2019-10-13 17:59:54,428 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 628 states.
[2019-10-13 17:59:54,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 886 transitions.
[2019-10-13 17:59:54,435 INFO  L78                 Accepts]: Start accepts. Automaton has 628 states and 886 transitions. Word has length 49
[2019-10-13 17:59:54,435 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:54,435 INFO  L462      AbstractCegarLoop]: Abstraction has 628 states and 886 transitions.
[2019-10-13 17:59:54,436 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:59:54,436 INFO  L276                IsEmpty]: Start isEmpty. Operand 628 states and 886 transitions.
[2019-10-13 17:59:54,443 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2019-10-13 17:59:54,443 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:54,443 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:54,444 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:54,444 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:54,444 INFO  L82        PathProgramCache]: Analyzing trace with hash -2099265230, now seen corresponding path program 1 times
[2019-10-13 17:59:54,445 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:54,445 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225890314]
[2019-10-13 17:59:54,445 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:54,445 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:54,446 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:54,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:54,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:54,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:54,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:54,847 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225890314]
[2019-10-13 17:59:54,847 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:59:54,847 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 17:59:54,847 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050588591]
[2019-10-13 17:59:54,850 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 17:59:54,850 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:54,851 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 17:59:54,851 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:59:54,851 INFO  L87              Difference]: Start difference. First operand 628 states and 886 transitions. Second operand 8 states.
[2019-10-13 17:59:57,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:57,716 INFO  L93              Difference]: Finished difference Result 1873 states and 2696 transitions.
[2019-10-13 17:59:57,717 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 17:59:57,717 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 129
[2019-10-13 17:59:57,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:57,728 INFO  L225             Difference]: With dead ends: 1873
[2019-10-13 17:59:57,728 INFO  L226             Difference]: Without dead ends: 1251
[2019-10-13 17:59:57,731 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 17:59:57,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1251 states.
[2019-10-13 17:59:57,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1226.
[2019-10-13 17:59:57,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1226 states.
[2019-10-13 17:59:57,797 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1619 transitions.
[2019-10-13 17:59:57,798 INFO  L78                 Accepts]: Start accepts. Automaton has 1226 states and 1619 transitions. Word has length 129
[2019-10-13 17:59:57,799 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:57,799 INFO  L462      AbstractCegarLoop]: Abstraction has 1226 states and 1619 transitions.
[2019-10-13 17:59:57,799 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 17:59:57,799 INFO  L276                IsEmpty]: Start isEmpty. Operand 1226 states and 1619 transitions.
[2019-10-13 17:59:57,805 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2019-10-13 17:59:57,805 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:57,806 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:57,806 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:57,806 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:57,806 INFO  L82        PathProgramCache]: Analyzing trace with hash -2045537286, now seen corresponding path program 1 times
[2019-10-13 17:59:57,807 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:57,807 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612587931]
[2019-10-13 17:59:57,807 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:57,807 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:57,808 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:57,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:58,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:58,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:58,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:58,223 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612587931]
[2019-10-13 17:59:58,224 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497623165]
[2019-10-13 17:59:58,224 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
[2019-10-13 17:59:58,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:58,327 INFO  L256         TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:59:58,339 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:59:58,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:58,446 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:59:58,447 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 17:59:58,447 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893700428]
[2019-10-13 17:59:58,451 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:59:58,454 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:58,461 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:59:58,461 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:58,462 INFO  L87              Difference]: Start difference. First operand 1226 states and 1619 transitions. Second operand 3 states.
[2019-10-13 17:59:59,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:59,663 INFO  L93              Difference]: Finished difference Result 3612 states and 4883 transitions.
[2019-10-13 17:59:59,663 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:59:59,663 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 180
[2019-10-13 17:59:59,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:59,677 INFO  L225             Difference]: With dead ends: 3612
[2019-10-13 17:59:59,678 INFO  L226             Difference]: Without dead ends: 2392
[2019-10-13 17:59:59,682 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:59,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2392 states.
[2019-10-13 17:59:59,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2189.
[2019-10-13 17:59:59,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2189 states.
[2019-10-13 17:59:59,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2912 transitions.
[2019-10-13 17:59:59,753 INFO  L78                 Accepts]: Start accepts. Automaton has 2189 states and 2912 transitions. Word has length 180
[2019-10-13 17:59:59,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:59,754 INFO  L462      AbstractCegarLoop]: Abstraction has 2189 states and 2912 transitions.
[2019-10-13 17:59:59,754 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:59:59,754 INFO  L276                IsEmpty]: Start isEmpty. Operand 2189 states and 2912 transitions.
[2019-10-13 17:59:59,759 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2019-10-13 17:59:59,759 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:59,759 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:59,964 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:59,965 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:59,965 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:59,966 INFO  L82        PathProgramCache]: Analyzing trace with hash -1976797618, now seen corresponding path program 1 times
[2019-10-13 17:59:59,966 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:59,967 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111566694]
[2019-10-13 17:59:59,967 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:59,967 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:59,967 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:59,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 156 backedges. 84 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 18:00:00,347 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111566694]
[2019-10-13 18:00:00,348 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186217571]
[2019-10-13 18:00:00,348 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
[2019-10-13 18:00:00,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,453 INFO  L256         TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:00:00,460 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:00,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 156 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2019-10-13 18:00:00,538 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:00,539 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 18:00:00,539 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881080002]
[2019-10-13 18:00:00,540 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:00:00,540 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:00,540 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:00:00,541 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:00:00,541 INFO  L87              Difference]: Start difference. First operand 2189 states and 2912 transitions. Second operand 5 states.
[2019-10-13 18:00:02,250 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:02,250 INFO  L93              Difference]: Finished difference Result 5406 states and 7546 transitions.
[2019-10-13 18:00:02,250 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:00:02,251 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 215
[2019-10-13 18:00:02,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:02,270 INFO  L225             Difference]: With dead ends: 5406
[2019-10-13 18:00:02,270 INFO  L226             Difference]: Without dead ends: 3223
[2019-10-13 18:00:02,276 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:00:02,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3223 states.
[2019-10-13 18:00:02,358 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3183.
[2019-10-13 18:00:02,359 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3183 states.
[2019-10-13 18:00:02,372 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4269 transitions.
[2019-10-13 18:00:02,372 INFO  L78                 Accepts]: Start accepts. Automaton has 3183 states and 4269 transitions. Word has length 215
[2019-10-13 18:00:02,373 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:02,373 INFO  L462      AbstractCegarLoop]: Abstraction has 3183 states and 4269 transitions.
[2019-10-13 18:00:02,373 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:00:02,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 3183 states and 4269 transitions.
[2019-10-13 18:00:02,379 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2019-10-13 18:00:02,380 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:02,380 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:00:02,593 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:02,593 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:02,594 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:02,594 INFO  L82        PathProgramCache]: Analyzing trace with hash 1368554123, now seen corresponding path program 1 times
[2019-10-13 18:00:02,594 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:02,595 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729453663]
[2019-10-13 18:00:02,597 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:02,597 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:02,598 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:02,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:02,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:02,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:02,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:02,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:00:02,894 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729453663]
[2019-10-13 18:00:02,894 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837333440]
[2019-10-13 18:00:02,895 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
[2019-10-13 18:00:02,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:02,989 INFO  L256         TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 18:00:02,995 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:03,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:03,106 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:03,106 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9
[2019-10-13 18:00:03,107 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440765269]
[2019-10-13 18:00:03,108 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:00:03,108 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:03,108 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:00:03,108 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:00:03,109 INFO  L87              Difference]: Start difference. First operand 3183 states and 4269 transitions. Second operand 9 states.
[2019-10-13 18:00:05,672 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:05,672 INFO  L93              Difference]: Finished difference Result 7976 states and 11384 transitions.
[2019-10-13 18:00:05,673 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:00:05,673 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 224
[2019-10-13 18:00:05,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:05,708 INFO  L225             Difference]: With dead ends: 7976
[2019-10-13 18:00:05,708 INFO  L226             Difference]: Without dead ends: 4987
[2019-10-13 18:00:05,718 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:00:05,723 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4987 states.
[2019-10-13 18:00:05,841 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4932.
[2019-10-13 18:00:05,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4932 states.
[2019-10-13 18:00:05,855 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 6422 transitions.
[2019-10-13 18:00:05,856 INFO  L78                 Accepts]: Start accepts. Automaton has 4932 states and 6422 transitions. Word has length 224
[2019-10-13 18:00:05,857 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:05,861 INFO  L462      AbstractCegarLoop]: Abstraction has 4932 states and 6422 transitions.
[2019-10-13 18:00:05,862 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:00:05,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 4932 states and 6422 transitions.
[2019-10-13 18:00:05,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 295
[2019-10-13 18:00:05,872 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:05,872 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, 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, 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]
[2019-10-13 18:00:06,078 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:06,079 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:06,079 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:06,079 INFO  L82        PathProgramCache]: Analyzing trace with hash 1712123571, now seen corresponding path program 1 times
[2019-10-13 18:00:06,080 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:06,080 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932477521]
[2019-10-13 18:00:06,080 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:06,080 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:06,080 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:06,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:06,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:06,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:06,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:06,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 196 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2019-10-13 18:00:06,512 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932477521]
[2019-10-13 18:00:06,512 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028777975]
[2019-10-13 18:00:06,512 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
[2019-10-13 18:00:06,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:06,678 INFO  L256         TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-10-13 18:00:06,682 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:06,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 196 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2019-10-13 18:00:06,799 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:06,799 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 13
[2019-10-13 18:00:06,800 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689202994]
[2019-10-13 18:00:06,801 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 13 states
[2019-10-13 18:00:06,801 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:06,801 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2019-10-13 18:00:06,801 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:00:06,802 INFO  L87              Difference]: Start difference. First operand 4932 states and 6422 transitions. Second operand 13 states.
[2019-10-13 18:00:16,488 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:16,489 INFO  L93              Difference]: Finished difference Result 18150 states and 28085 transitions.
[2019-10-13 18:00:16,490 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. 
[2019-10-13 18:00:16,491 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 294
[2019-10-13 18:00:16,491 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:16,591 INFO  L225             Difference]: With dead ends: 18150
[2019-10-13 18:00:16,591 INFO  L226             Difference]: Without dead ends: 13412
[2019-10-13 18:00:16,615 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=337, Invalid=1385, Unknown=0, NotChecked=0, Total=1722
[2019-10-13 18:00:16,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13412 states.
[2019-10-13 18:00:17,028 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13412 to 12832.
[2019-10-13 18:00:17,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12832 states.
[2019-10-13 18:00:17,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12832 states to 12832 states and 16901 transitions.
[2019-10-13 18:00:17,054 INFO  L78                 Accepts]: Start accepts. Automaton has 12832 states and 16901 transitions. Word has length 294
[2019-10-13 18:00:17,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:17,054 INFO  L462      AbstractCegarLoop]: Abstraction has 12832 states and 16901 transitions.
[2019-10-13 18:00:17,054 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2019-10-13 18:00:17,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 12832 states and 16901 transitions.
[2019-10-13 18:00:17,093 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 393
[2019-10-13 18:00:17,093 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:17,094 INFO  L380         BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 18:00:17,305 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:17,306 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:17,306 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:17,307 INFO  L82        PathProgramCache]: Analyzing trace with hash -1754946104, now seen corresponding path program 1 times
[2019-10-13 18:00:17,307 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:17,307 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35354566]
[2019-10-13 18:00:17,307 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:17,307 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:17,307 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:17,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:17,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:17,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:17,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:17,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:17,848 INFO  L134       CoverageAnalysis]: Checked inductivity of 436 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked.
[2019-10-13 18:00:17,848 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35354566]
[2019-10-13 18:00:17,849 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691680385]
[2019-10-13 18:00:17,849 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
[2019-10-13 18:00:17,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:17,969 INFO  L256         TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:00:17,977 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:18,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 436 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked.
[2019-10-13 18:00:18,118 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:18,118 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-13 18:00:18,118 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046934512]
[2019-10-13 18:00:18,119 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 18:00:18,120 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:18,120 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 18:00:18,120 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:00:18,120 INFO  L87              Difference]: Start difference. First operand 12832 states and 16901 transitions. Second operand 11 states.
[2019-10-13 18:00:21,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:21,689 INFO  L93              Difference]: Finished difference Result 27792 states and 37246 transitions.
[2019-10-13 18:00:21,689 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2019-10-13 18:00:21,689 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 392
[2019-10-13 18:00:21,690 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:21,748 INFO  L225             Difference]: With dead ends: 27792
[2019-10-13 18:00:21,748 INFO  L226             Difference]: Without dead ends: 16310
[2019-10-13 18:00:21,775 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420
[2019-10-13 18:00:21,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16310 states.
[2019-10-13 18:00:22,212 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16310 to 15074.
[2019-10-13 18:00:22,212 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15074 states.
[2019-10-13 18:00:22,245 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15074 states to 15074 states and 19664 transitions.
[2019-10-13 18:00:22,245 INFO  L78                 Accepts]: Start accepts. Automaton has 15074 states and 19664 transitions. Word has length 392
[2019-10-13 18:00:22,246 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:22,246 INFO  L462      AbstractCegarLoop]: Abstraction has 15074 states and 19664 transitions.
[2019-10-13 18:00:22,246 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 18:00:22,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 15074 states and 19664 transitions.
[2019-10-13 18:00:22,288 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2019-10-13 18:00:22,288 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:22,289 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:00:22,500 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:22,501 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:22,501 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:22,501 INFO  L82        PathProgramCache]: Analyzing trace with hash 1282030757, now seen corresponding path program 1 times
[2019-10-13 18:00:22,501 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:22,502 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541626092]
[2019-10-13 18:00:22,502 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:22,502 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:22,503 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:22,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:22,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:22,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:22,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:22,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:22,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:23,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 742 backedges. 182 proven. 4 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked.
[2019-10-13 18:00:23,253 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541626092]
[2019-10-13 18:00:23,253 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014091223]
[2019-10-13 18:00:23,254 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:23,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:23,406 INFO  L256         TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 8 conjunts are in the unsatisfiable core
[2019-10-13 18:00:23,414 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:23,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 742 backedges. 469 proven. 82 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked.
[2019-10-13 18:00:23,577 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:23,577 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7
[2019-10-13 18:00:23,577 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574390059]
[2019-10-13 18:00:23,579 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-13 18:00:23,579 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:23,579 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-13 18:00:23,579 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:00:23,579 INFO  L87              Difference]: Start difference. First operand 15074 states and 19664 transitions. Second operand 7 states.