/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label56.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:01:39,244 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:01:39,327 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 19:01:39,354 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:01:39,355 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:01:39,356 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:01:39,356 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:01:39,357 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:01:39,357 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:01:39,357 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:01:39,357 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:01:39,357 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:01:39,358 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:01:39,358 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:01:39,358 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:01:39,358 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:01:39,358 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:01:39,359 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:01:39,359 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:01:39,359 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:01:39,359 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:01:39,359 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:01:39,360 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:01:39,360 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:01:39,360 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:01:39,360 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:01:39,360 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:01:39,361 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:01:39,361 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:01:39,361 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:01:39,361 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:01:39,361 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:01:39,619 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:01:39,632 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:01:39,639 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:01:39,641 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:01:39,642 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:01:39,642 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label56.c
[2019-11-06 19:01:39,723 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2feeb8749/16352f3ba2c5481b8f5267cdae40a0fa/FLAG9d32a6867
[2019-11-06 19:01:40,407 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:01:40,408 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label56.c
[2019-11-06 19:01:40,428 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2feeb8749/16352f3ba2c5481b8f5267cdae40a0fa/FLAG9d32a6867
[2019-11-06 19:01:40,563 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2feeb8749/16352f3ba2c5481b8f5267cdae40a0fa
[2019-11-06 19:01:40,572 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:01:40,573 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:01:40,574 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:01:40,575 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:01:40,578 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:01:40,579 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:40" (1/1) ...
[2019-11-06 19:01:40,582 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5bfa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:40, skipping insertion in model container
[2019-11-06 19:01:40,583 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:40" (1/1) ...
[2019-11-06 19:01:40,590 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:01:40,665 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:01:41,470 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:01:41,477 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:01:41,862 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:01:41,889 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:01:41,890 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41 WrapperNode
[2019-11-06 19:01:41,891 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:01:41,892 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:01:41,892 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:01:41,892 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:01:41,908 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:41,909 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:41,961 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:41,961 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:42,025 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:42,054 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:42,064 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
[2019-11-06 19:01:42,073 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:01:42,074 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:01:42,074 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:01:42,074 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:01:42,075 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:01:42,135 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:01:42,135 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:01:42,135 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:01:42,135 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:01:42,136 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:01:42,136 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:01:42,136 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:01:42,136 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:01:42,136 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:01:42,137 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:01:42,137 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:01:43,981 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:01:43,982 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:01:43,986 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:43 BoogieIcfgContainer
[2019-11-06 19:01:43,987 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:01:43,988 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:01:43,989 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:01:43,993 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:01:43,993 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:01:40" (1/3) ...
[2019-11-06 19:01:43,994 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79848087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:43, skipping insertion in model container
[2019-11-06 19:01:43,994 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:41" (2/3) ...
[2019-11-06 19:01:43,995 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79848087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:43, skipping insertion in model container
[2019-11-06 19:01:43,995 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:43" (3/3) ...
[2019-11-06 19:01:44,002 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem03_label56.c
[2019-11-06 19:01:44,017 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:01:44,027 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:01:44,039 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:01:44,084 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:01:44,084 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:01:44,086 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:01:44,086 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:01:44,086 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:01:44,086 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:01:44,087 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:01:44,087 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:01:44,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states.
[2019-11-06 19:01:44,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 180
[2019-11-06 19:01:44,147 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:44,148 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:44,151 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:44,157 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:44,158 INFO  L82        PathProgramCache]: Analyzing trace with hash 1923555504, now seen corresponding path program 1 times
[2019-11-06 19:01:44,167 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:44,167 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533806431]
[2019-11-06 19:01:44,168 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:44,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:45,053 WARN  L191               SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:45,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:45,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:45,229 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533806431]
[2019-11-06 19:01:45,230 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:01:45,230 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:01:45,232 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710172761]
[2019-11-06 19:01:45,238 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:01:45,239 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:45,253 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:01:45,254 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:01:45,256 INFO  L87              Difference]: Start difference. First operand 311 states. Second operand 5 states.
[2019-11-06 19:01:45,437 WARN  L191               SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:45,948 WARN  L191               SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:01:49,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:49,894 INFO  L93              Difference]: Finished difference Result 1111 states and 1980 transitions.
[2019-11-06 19:01:49,895 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:01:49,896 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 179
[2019-11-06 19:01:49,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:49,934 INFO  L225             Difference]: With dead ends: 1111
[2019-11-06 19:01:49,934 INFO  L226             Difference]: Without dead ends: 703
[2019-11-06 19:01:49,948 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:01:49,971 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 703 states.
[2019-11-06 19:01:50,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 467.
[2019-11-06 19:01:50,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 467 states.
[2019-11-06 19:01:50,054 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 718 transitions.
[2019-11-06 19:01:50,056 INFO  L78                 Accepts]: Start accepts. Automaton has 467 states and 718 transitions. Word has length 179
[2019-11-06 19:01:50,058 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:50,058 INFO  L462      AbstractCegarLoop]: Abstraction has 467 states and 718 transitions.
[2019-11-06 19:01:50,058 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:01:50,058 INFO  L276                IsEmpty]: Start isEmpty. Operand 467 states and 718 transitions.
[2019-11-06 19:01:50,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2019-11-06 19:01:50,065 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:50,065 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:50,066 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:50,066 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:50,066 INFO  L82        PathProgramCache]: Analyzing trace with hash 1452588996, now seen corresponding path program 1 times
[2019-11-06 19:01:50,067 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:50,067 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97774228]
[2019-11-06 19:01:50,067 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:50,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:50,478 WARN  L191               SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:50,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:50,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:50,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:50,766 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97774228]
[2019-11-06 19:01:50,766 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555384024]
[2019-11-06 19:01:50,767 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
[2019-11-06 19:01:51,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:51,077 INFO  L256         TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:01:51,103 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:51,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:51,215 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:01:51,215 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-06 19:01:51,219 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359154554]
[2019-11-06 19:01:51,221 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:01:51,221 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:51,222 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:01:51,222 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:01:51,222 INFO  L87              Difference]: Start difference. First operand 467 states and 718 transitions. Second operand 3 states.
[2019-11-06 19:01:52,263 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:52,264 INFO  L93              Difference]: Finished difference Result 1351 states and 2102 transitions.
[2019-11-06 19:01:52,264 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:01:52,264 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 191
[2019-11-06 19:01:52,265 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:52,270 INFO  L225             Difference]: With dead ends: 1351
[2019-11-06 19:01:52,271 INFO  L226             Difference]: Without dead ends: 890
[2019-11-06 19:01:52,275 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:01:52,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 890 states.
[2019-11-06 19:01:52,323 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888.
[2019-11-06 19:01:52,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 888 states.
[2019-11-06 19:01:52,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1219 transitions.
[2019-11-06 19:01:52,329 INFO  L78                 Accepts]: Start accepts. Automaton has 888 states and 1219 transitions. Word has length 191
[2019-11-06 19:01:52,330 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:52,330 INFO  L462      AbstractCegarLoop]: Abstraction has 888 states and 1219 transitions.
[2019-11-06 19:01:52,330 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:01:52,331 INFO  L276                IsEmpty]: Start isEmpty. Operand 888 states and 1219 transitions.
[2019-11-06 19:01:52,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2019-11-06 19:01:52,340 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:52,340 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:52,541 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:01:52,542 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:52,542 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:52,542 INFO  L82        PathProgramCache]: Analyzing trace with hash 128275852, now seen corresponding path program 1 times
[2019-11-06 19:01:52,543 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:52,543 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890096421]
[2019-11-06 19:01:52,544 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:52,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:52,786 WARN  L191               SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:52,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:52,913 WARN  L191               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2019-11-06 19:01:52,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:53,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:53,107 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890096421]
[2019-11-06 19:01:53,107 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:01:53,109 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:01:53,109 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739312143]
[2019-11-06 19:01:53,111 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:01:53,120 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:53,122 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:01:53,123 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:01:53,123 INFO  L87              Difference]: Start difference. First operand 888 states and 1219 transitions. Second operand 9 states.
[2019-11-06 19:01:53,403 WARN  L191               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:56,163 WARN  L191               SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 128
[2019-11-06 19:01:56,906 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:56,906 INFO  L93              Difference]: Finished difference Result 2746 states and 4151 transitions.
[2019-11-06 19:01:56,906 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-11-06 19:01:56,907 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 195
[2019-11-06 19:01:56,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:56,922 INFO  L225             Difference]: With dead ends: 2746
[2019-11-06 19:01:56,923 INFO  L226             Difference]: Without dead ends: 1864
[2019-11-06 19:01:56,926 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240
[2019-11-06 19:01:56,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1864 states.
[2019-11-06 19:01:56,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1782.
[2019-11-06 19:01:56,997 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1782 states.
[2019-11-06 19:01:57,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2478 transitions.
[2019-11-06 19:01:57,004 INFO  L78                 Accepts]: Start accepts. Automaton has 1782 states and 2478 transitions. Word has length 195
[2019-11-06 19:01:57,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:57,004 INFO  L462      AbstractCegarLoop]: Abstraction has 1782 states and 2478 transitions.
[2019-11-06 19:01:57,004 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:01:57,005 INFO  L276                IsEmpty]: Start isEmpty. Operand 1782 states and 2478 transitions.
[2019-11-06 19:01:57,011 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2019-11-06 19:01:57,011 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:57,011 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:57,012 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:57,012 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:57,012 INFO  L82        PathProgramCache]: Analyzing trace with hash -991429437, now seen corresponding path program 1 times
[2019-11-06 19:01:57,012 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:57,013 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183609987]
[2019-11-06 19:01:57,013 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:57,038 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:57,198 WARN  L191               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:57,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:57,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:57,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:57,446 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183609987]
[2019-11-06 19:01:57,447 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:01:57,447 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-06 19:01:57,448 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385388754]
[2019-11-06 19:01:57,448 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-06 19:01:57,448 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:57,449 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-06 19:01:57,449 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:01:57,449 INFO  L87              Difference]: Start difference. First operand 1782 states and 2478 transitions. Second operand 8 states.
[2019-11-06 19:01:57,592 WARN  L191               SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:58,118 WARN  L191               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 128
[2019-11-06 19:02:00,949 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:00,949 INFO  L93              Difference]: Finished difference Result 5436 states and 8296 transitions.
[2019-11-06 19:02:00,950 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-11-06 19:02:00,950 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 196
[2019-11-06 19:02:00,950 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:00,978 INFO  L225             Difference]: With dead ends: 5436
[2019-11-06 19:02:00,978 INFO  L226             Difference]: Without dead ends: 3660
[2019-11-06 19:02:00,985 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2019-11-06 19:02:00,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3660 states.
[2019-11-06 19:02:01,097 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3565.
[2019-11-06 19:02:01,097 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3565 states.
[2019-11-06 19:02:01,109 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5046 transitions.
[2019-11-06 19:02:01,109 INFO  L78                 Accepts]: Start accepts. Automaton has 3565 states and 5046 transitions. Word has length 196
[2019-11-06 19:02:01,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:01,110 INFO  L462      AbstractCegarLoop]: Abstraction has 3565 states and 5046 transitions.
[2019-11-06 19:02:01,110 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-06 19:02:01,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 3565 states and 5046 transitions.
[2019-11-06 19:02:01,121 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 204
[2019-11-06 19:02:01,121 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:01,121 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:01,122 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:01,122 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:01,122 INFO  L82        PathProgramCache]: Analyzing trace with hash -1265853156, now seen corresponding path program 1 times
[2019-11-06 19:02:01,122 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:01,123 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913014467]
[2019-11-06 19:02:01,123 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:01,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:01,373 WARN  L191               SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:02:01,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:01,599 WARN  L191               SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2019-11-06 19:02:01,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:01,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:02:01,727 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913014467]
[2019-11-06 19:02:01,727 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:02:01,728 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:02:01,728 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979713313]
[2019-11-06 19:02:01,729 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:02:01,729 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:01,729 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:02:01,730 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:02:01,730 INFO  L87              Difference]: Start difference. First operand 3565 states and 5046 transitions. Second operand 9 states.
[2019-11-06 19:02:01,899 WARN  L191               SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:02:02,313 WARN  L191               SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:02:04,733 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:04,733 INFO  L93              Difference]: Finished difference Result 7233 states and 10660 transitions.
[2019-11-06 19:02:04,739 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2019-11-06 19:02:04,739 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 203
[2019-11-06 19:02:04,739 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:04,760 INFO  L225             Difference]: With dead ends: 7233
[2019-11-06 19:02:04,761 INFO  L226             Difference]: Without dead ends: 3674
[2019-11-06 19:02:04,771 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:02:04,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3674 states.
[2019-11-06 19:02:04,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3603.
[2019-11-06 19:02:04,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3603 states.
[2019-11-06 19:02:04,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4999 transitions.
[2019-11-06 19:02:04,879 INFO  L78                 Accepts]: Start accepts. Automaton has 3603 states and 4999 transitions. Word has length 203
[2019-11-06 19:02:04,880 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:04,880 INFO  L462      AbstractCegarLoop]: Abstraction has 3603 states and 4999 transitions.
[2019-11-06 19:02:04,881 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:02:04,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 3603 states and 4999 transitions.
[2019-11-06 19:02:04,894 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2019-11-06 19:02:04,894 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:04,894 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:04,895 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:04,895 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:04,895 INFO  L82        PathProgramCache]: Analyzing trace with hash 890454064, now seen corresponding path program 1 times
[2019-11-06 19:02:04,896 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:04,896 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112120844]
[2019-11-06 19:02:04,897 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:04,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:05,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:05,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:05,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:05,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:02:05,282 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112120844]
[2019-11-06 19:02:05,282 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996104941]
[2019-11-06 19:02:05,284 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
[2019-11-06 19:02:05,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:05,508 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:02:05,520 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:02:05,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-11-06 19:02:05,665 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:02:05,665 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-11-06 19:02:05,665 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644822836]
[2019-11-06 19:02:05,666 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:02:05,666 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:05,666 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:02:05,667 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:02:05,667 INFO  L87              Difference]: Start difference. First operand 3603 states and 4999 transitions. Second operand 3 states.
[2019-11-06 19:02:06,692 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:06,693 INFO  L93              Difference]: Finished difference Result 8911 states and 12854 transitions.
[2019-11-06 19:02:06,694 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:02:06,694 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 215
[2019-11-06 19:02:06,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:06,721 INFO  L225             Difference]: With dead ends: 8911
[2019-11-06 19:02:06,721 INFO  L226             Difference]: Without dead ends: 5314
[2019-11-06 19:02:06,733 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:02:06,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5314 states.
[2019-11-06 19:02:06,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 5311.
[2019-11-06 19:02:06,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5311 states.
[2019-11-06 19:02:06,885 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 7667 transitions.
[2019-11-06 19:02:06,885 INFO  L78                 Accepts]: Start accepts. Automaton has 5311 states and 7667 transitions. Word has length 215
[2019-11-06 19:02:06,886 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:06,886 INFO  L462      AbstractCegarLoop]: Abstraction has 5311 states and 7667 transitions.
[2019-11-06 19:02:06,886 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:02:06,886 INFO  L276                IsEmpty]: Start isEmpty. Operand 5311 states and 7667 transitions.
[2019-11-06 19:02:06,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2019-11-06 19:02:06,909 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:06,909 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:07,113 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:02:07,114 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:07,114 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:07,114 INFO  L82        PathProgramCache]: Analyzing trace with hash 1791765692, now seen corresponding path program 1 times
[2019-11-06 19:02:07,114 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:07,115 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820265769]
[2019-11-06 19:02:07,115 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:07,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:07,368 WARN  L191               SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:02:07,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:07,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:07,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:07,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-11-06 19:02:07,584 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820265769]
[2019-11-06 19:02:07,585 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426846531]
[2019-11-06 19:02:07,586 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
[2019-11-06 19:02:07,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:07,867 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-11-06 19:02:07,878 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:02:07,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-11-06 19:02:07,948 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:02:07,948 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-11-06 19:02:07,949 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109670086]
[2019-11-06 19:02:07,950 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:02:07,950 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:07,950 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:02:07,950 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:02:07,951 INFO  L87              Difference]: Start difference. First operand 5311 states and 7667 transitions. Second operand 5 states.
[2019-11-06 19:02:09,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:09,492 INFO  L93              Difference]: Finished difference Result 10747 states and 16175 transitions.
[2019-11-06 19:02:09,492 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:02:09,492 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 223
[2019-11-06 19:02:09,493 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:09,521 INFO  L225             Difference]: With dead ends: 10747
[2019-11-06 19:02:09,521 INFO  L226             Difference]: Without dead ends: 5442
[2019-11-06 19:02:09,535 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:02:09,541 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5442 states.
[2019-11-06 19:02:09,680 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 5355.
[2019-11-06 19:02:09,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5355 states.
[2019-11-06 19:02:09,692 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7127 transitions.
[2019-11-06 19:02:09,692 INFO  L78                 Accepts]: Start accepts. Automaton has 5355 states and 7127 transitions. Word has length 223
[2019-11-06 19:02:09,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:09,693 INFO  L462      AbstractCegarLoop]: Abstraction has 5355 states and 7127 transitions.
[2019-11-06 19:02:09,693 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:02:09,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 5355 states and 7127 transitions.
[2019-11-06 19:02:09,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2019-11-06 19:02:09,713 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:09,713 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:09,928 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:02:09,929 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:09,930 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:09,930 INFO  L82        PathProgramCache]: Analyzing trace with hash -1498504574, now seen corresponding path program 1 times
[2019-11-06 19:02:09,930 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:09,931 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166753764]
[2019-11-06 19:02:09,931 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:10,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:10,351 WARN  L191               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:02:10,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:10,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:10,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:02:10,512 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166753764]
[2019-11-06 19:02:10,516 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970635632]
[2019-11-06 19:02:10,516 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
[2019-11-06 19:02:10,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:10,702 INFO  L256         TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:02:10,710 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:02:10,773 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:02:10,773 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:02:10,774 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-06 19:02:10,774 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133027085]
[2019-11-06 19:02:10,775 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:02:10,775 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:10,775 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:02:10,775 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:02:10,775 INFO  L87              Difference]: Start difference. First operand 5355 states and 7127 transitions. Second operand 3 states.
[2019-11-06 19:02:12,075 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:12,076 INFO  L93              Difference]: Finished difference Result 15628 states and 21373 transitions.
[2019-11-06 19:02:12,076 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:02:12,077 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 224
[2019-11-06 19:02:12,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:12,143 INFO  L225             Difference]: With dead ends: 15628
[2019-11-06 19:02:12,143 INFO  L226             Difference]: Without dead ends: 10279
[2019-11-06 19:02:12,163 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:02:12,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10279 states.
[2019-11-06 19:02:12,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10279 to 10234.
[2019-11-06 19:02:12,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10234 states.
[2019-11-06 19:02:12,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10234 states to 10234 states and 13887 transitions.
[2019-11-06 19:02:12,512 INFO  L78                 Accepts]: Start accepts. Automaton has 10234 states and 13887 transitions. Word has length 224
[2019-11-06 19:02:12,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:12,513 INFO  L462      AbstractCegarLoop]: Abstraction has 10234 states and 13887 transitions.
[2019-11-06 19:02:12,513 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:02:12,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 10234 states and 13887 transitions.
[2019-11-06 19:02:12,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 230
[2019-11-06 19:02:12,546 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:12,546 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:12,752 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:02:12,752 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:12,753 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:12,753 INFO  L82        PathProgramCache]: Analyzing trace with hash -1178799309, now seen corresponding path program 1 times
[2019-11-06 19:02:12,754 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:12,754 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675422532]
[2019-11-06 19:02:12,754 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:12,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:13,045 WARN  L191               SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:02:13,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:13,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:13,193 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:13,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-11-06 19:02:13,257 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675422532]
[2019-11-06 19:02:13,257 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551113816]
[2019-11-06 19:02:13,257 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
[2019-11-06 19:02:13,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:13,462 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-11-06 19:02:13,467 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:02:13,530 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-11-06 19:02:13,531 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:02:13,531 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2019-11-06 19:02:13,531 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765098251]
[2019-11-06 19:02:13,532 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:02:13,532 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:13,532 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:02:13,532 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:02:13,533 INFO  L87              Difference]: Start difference. First operand 10234 states and 13887 transitions. Second operand 5 states.