java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:03:51,882 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 22:03:51,958 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-14 22:03:51,981 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:03:51,981 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:03:51,984 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:03:51,984 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:03:51,984 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:03:51,984 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:03:51,985 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:03:51,985 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:03:51,985 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:03:51,985 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:03:51,986 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:03:51,987 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:03:51,987 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:03:51,987 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:03:51,987 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:03:51,988 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:03:51,988 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:03:51,988 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:03:51,988 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:03:51,989 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:03:51,989 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:03:51,989 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:03:51,989 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:03:51,990 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:03:51,990 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:03:51,990 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:03:51,990 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:03:51,991 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:03:51,991 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:03:52,291 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:03:52,304 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:03:52,308 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:03:52,309 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:03:52,309 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:03:52,310 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c
[2019-10-14 22:03:52,371 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f05601d7/1776c14717d4451bbf34a3c3b4ebc229/FLAG6ae909912
[2019-10-14 22:03:52,999 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:03:53,002 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label12.c
[2019-10-14 22:03:53,020 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f05601d7/1776c14717d4451bbf34a3c3b4ebc229/FLAG6ae909912
[2019-10-14 22:03:53,209 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f05601d7/1776c14717d4451bbf34a3c3b4ebc229
[2019-10-14 22:03:53,219 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:03:53,221 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:03:53,222 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:03:53,222 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:03:53,225 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:03:53,226 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,229 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:53, skipping insertion in model container
[2019-10-14 22:03:53,229 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:53" (1/1) ...
[2019-10-14 22:03:53,237 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:03:53,313 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:03:54,404 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:03:54,415 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:03:54,618 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:03:54,641 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:03:54,642 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54 WrapperNode
[2019-10-14 22:03:54,642 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:03:54,643 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:03:54,643 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:03:54,643 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:03:54,663 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,663 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,690 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,690 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,769 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,808 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,822 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
[2019-10-14 22:03:54,834 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:03:54,835 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:03:54,835 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:03:54,836 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:03:54,837 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:03:54,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:03:54,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:03:54,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:03:54,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:03:54,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:03:54,914 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:03:54,914 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:03:54,914 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:03:54,914 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:03:54,914 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:03:54,915 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:03:54,915 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:03:54,916 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:03:57,117 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:03:57,117 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:03:57,122 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:57 BoogieIcfgContainer
[2019-10-14 22:03:57,125 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:03:57,126 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:03:57,126 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:03:57,130 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:03:57,130 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:53" (1/3) ...
[2019-10-14 22:03:57,131 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b906ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:57, skipping insertion in model container
[2019-10-14 22:03:57,131 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:54" (2/3) ...
[2019-10-14 22:03:57,131 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b906ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:57, skipping insertion in model container
[2019-10-14 22:03:57,132 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:57" (3/3) ...
[2019-10-14 22:03:57,135 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem16_label12.c
[2019-10-14 22:03:57,149 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:03:57,161 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:03:57,173 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:03:57,220 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:03:57,221 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:03:57,221 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:03:57,221 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:03:57,221 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:03:57,221 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:03:57,221 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:03:57,222 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:03:57,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states.
[2019-10-14 22:03:57,268 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2019-10-14 22:03:57,268 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:03:57,269 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]
[2019-10-14 22:03:57,271 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:03:57,275 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:03:57,275 INFO  L82        PathProgramCache]: Analyzing trace with hash 1524372618, now seen corresponding path program 1 times
[2019-10-14 22:03:57,282 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:03:57,282 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617141853]
[2019-10-14 22:03:57,282 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:57,283 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:57,283 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:03:57,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:57,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:57,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:03:57,640 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617141853]
[2019-10-14 22:03:57,641 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:03:57,641 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:03:57,641 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446936544]
[2019-10-14 22:03:57,647 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:03:57,648 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:03:57,665 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:03:57,666 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:03:57,669 INFO  L87              Difference]: Start difference. First operand 409 states. Second operand 5 states.
[2019-10-14 22:04:03,048 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:03,049 INFO  L93              Difference]: Finished difference Result 1515 states and 2850 transitions.
[2019-10-14 22:04:03,049 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 22:04:03,051 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 45
[2019-10-14 22:04:03,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:03,087 INFO  L225             Difference]: With dead ends: 1515
[2019-10-14 22:04:03,088 INFO  L226             Difference]: Without dead ends: 1038
[2019-10-14 22:04:03,099 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:04:03,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1038 states.
[2019-10-14 22:04:03,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031.
[2019-10-14 22:04:03,212 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1031 states.
[2019-10-14 22:04:03,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions.
[2019-10-14 22:04:03,220 INFO  L78                 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 45
[2019-10-14 22:04:03,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:03,221 INFO  L462      AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions.
[2019-10-14 22:04:03,221 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:03,222 INFO  L276                IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions.
[2019-10-14 22:04:03,232 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2019-10-14 22:04:03,232 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:03,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:03,233 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:03,234 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:03,234 INFO  L82        PathProgramCache]: Analyzing trace with hash 539466811, now seen corresponding path program 1 times
[2019-10-14 22:04:03,234 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:03,234 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856991327]
[2019-10-14 22:04:03,235 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:03,235 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:03,235 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:03,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:03,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:03,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:03,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:04:03,784 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856991327]
[2019-10-14 22:04:03,784 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:04:03,784 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 22:04:03,784 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654399117]
[2019-10-14 22:04:03,787 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 22:04:03,787 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:03,788 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 22:04:03,788 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 22:04:03,788 INFO  L87              Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand 9 states.
[2019-10-14 22:04:08,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:08,147 INFO  L93              Difference]: Finished difference Result 3125 states and 5015 transitions.
[2019-10-14 22:04:08,147 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 22:04:08,147 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 180
[2019-10-14 22:04:08,149 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:08,167 INFO  L225             Difference]: With dead ends: 3125
[2019-10-14 22:04:08,167 INFO  L226             Difference]: Without dead ends: 2100
[2019-10-14 22:04:08,171 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-10-14 22:04:08,174 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2100 states.
[2019-10-14 22:04:08,241 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2069.
[2019-10-14 22:04:08,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2069 states.
[2019-10-14 22:04:08,253 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3146 transitions.
[2019-10-14 22:04:08,253 INFO  L78                 Accepts]: Start accepts. Automaton has 2069 states and 3146 transitions. Word has length 180
[2019-10-14 22:04:08,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:08,254 INFO  L462      AbstractCegarLoop]: Abstraction has 2069 states and 3146 transitions.
[2019-10-14 22:04:08,255 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 22:04:08,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 2069 states and 3146 transitions.
[2019-10-14 22:04:08,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2019-10-14 22:04:08,260 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:08,261 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, 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]
[2019-10-14 22:04:08,261 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:08,261 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:08,262 INFO  L82        PathProgramCache]: Analyzing trace with hash -893478362, now seen corresponding path program 1 times
[2019-10-14 22:04:08,262 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:08,262 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374634267]
[2019-10-14 22:04:08,262 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:08,263 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:08,263 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:08,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:08,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:08,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:08,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:08,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 148 backedges. 76 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 22:04:08,565 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374634267]
[2019-10-14 22:04:08,565 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825642894]
[2019-10-14 22:04:08,565 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:08,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:08,687 INFO  L256         TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 22:04:08,705 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:08,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 148 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-10-14 22:04:08,873 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 22:04:08,873 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-14 22:04:08,874 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243106410]
[2019-10-14 22:04:08,875 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:04:08,875 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:08,875 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:04:08,875 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:08,876 INFO  L87              Difference]: Start difference. First operand 2069 states and 3146 transitions. Second operand 5 states.
[2019-10-14 22:04:11,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:11,472 INFO  L93              Difference]: Finished difference Result 5192 states and 7967 transitions.
[2019-10-14 22:04:11,474 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-14 22:04:11,474 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 215
[2019-10-14 22:04:11,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:11,494 INFO  L225             Difference]: With dead ends: 5192
[2019-10-14 22:04:11,494 INFO  L226             Difference]: Without dead ends: 3129
[2019-10-14 22:04:11,500 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:04:11,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3129 states.
[2019-10-14 22:04:11,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3097.
[2019-10-14 22:04:11,593 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3097 states.
[2019-10-14 22:04:11,605 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3988 transitions.
[2019-10-14 22:04:11,606 INFO  L78                 Accepts]: Start accepts. Automaton has 3097 states and 3988 transitions. Word has length 215
[2019-10-14 22:04:11,607 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:11,608 INFO  L462      AbstractCegarLoop]: Abstraction has 3097 states and 3988 transitions.
[2019-10-14 22:04:11,608 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:04:11,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 3097 states and 3988 transitions.
[2019-10-14 22:04:11,614 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 325
[2019-10-14 22:04:11,614 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:11,615 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:11,820 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:11,820 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:11,821 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:11,821 INFO  L82        PathProgramCache]: Analyzing trace with hash 1369835779, now seen corresponding path program 1 times
[2019-10-14 22:04:11,821 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:11,821 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058778744]
[2019-10-14 22:04:11,822 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:11,822 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:11,822 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:11,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:11,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:11,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:12,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:12,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:12,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 349 backedges. 187 proven. 71 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2019-10-14 22:04:12,240 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058778744]
[2019-10-14 22:04:12,240 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307629653]
[2019-10-14 22:04:12,240 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:12,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:12,400 INFO  L256         TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:12,408 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:12,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 349 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-10-14 22:04:12,599 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:12,599 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-14 22:04:12,599 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432749897]
[2019-10-14 22:04:12,601 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 22:04:12,601 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:12,601 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 22:04:12,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:12,602 INFO  L87              Difference]: Start difference. First operand 3097 states and 3988 transitions. Second operand 11 states.
[2019-10-14 22:04:20,905 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:20,905 INFO  L93              Difference]: Finished difference Result 10419 states and 14042 transitions.
[2019-10-14 22:04:20,908 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2019-10-14 22:04:20,908 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 324
[2019-10-14 22:04:20,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:20,962 INFO  L225             Difference]: With dead ends: 10419
[2019-10-14 22:04:20,962 INFO  L226             Difference]: Without dead ends: 6317
[2019-10-14 22:04:20,979 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420
[2019-10-14 22:04:20,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6317 states.
[2019-10-14 22:04:21,224 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5938.
[2019-10-14 22:04:21,225 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5938 states.
[2019-10-14 22:04:21,255 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 7569 transitions.
[2019-10-14 22:04:21,256 INFO  L78                 Accepts]: Start accepts. Automaton has 5938 states and 7569 transitions. Word has length 324
[2019-10-14 22:04:21,258 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:21,258 INFO  L462      AbstractCegarLoop]: Abstraction has 5938 states and 7569 transitions.
[2019-10-14 22:04:21,258 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-14 22:04:21,258 INFO  L276                IsEmpty]: Start isEmpty. Operand 5938 states and 7569 transitions.
[2019-10-14 22:04:21,269 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 362
[2019-10-14 22:04:21,269 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:21,270 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:04:21,474 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:21,475 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:21,475 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:21,475 INFO  L82        PathProgramCache]: Analyzing trace with hash 556704298, now seen corresponding path program 1 times
[2019-10-14 22:04:21,476 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:21,477 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2560545]
[2019-10-14 22:04:21,477 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:21,477 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:21,477 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:21,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:21,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:21,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:21,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:21,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:21,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 371 backedges. 195 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2019-10-14 22:04:21,873 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2560545]
[2019-10-14 22:04:21,873 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077822711]
[2019-10-14 22:04:21,873 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:22,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:22,036 INFO  L256         TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:22,041 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:22,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 371 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-10-14 22:04:22,131 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:22,131 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11
[2019-10-14 22:04:22,131 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830931480]
[2019-10-14 22:04:22,132 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 22:04:22,132 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:22,133 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 22:04:22,133 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 22:04:22,133 INFO  L87              Difference]: Start difference. First operand 5938 states and 7569 transitions. Second operand 11 states.
[2019-10-14 22:04:26,941 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:04:26,941 INFO  L93              Difference]: Finished difference Result 13329 states and 17713 transitions.
[2019-10-14 22:04:26,942 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 22:04:26,942 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 361
[2019-10-14 22:04:26,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:04:26,980 INFO  L225             Difference]: With dead ends: 13329
[2019-10-14 22:04:26,981 INFO  L226             Difference]: Without dead ends: 7352
[2019-10-14 22:04:27,007 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2019-10-14 22:04:27,016 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7352 states.
[2019-10-14 22:04:27,180 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7310.
[2019-10-14 22:04:27,180 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7310 states.
[2019-10-14 22:04:27,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 8304 transitions.
[2019-10-14 22:04:27,197 INFO  L78                 Accepts]: Start accepts. Automaton has 7310 states and 8304 transitions. Word has length 361
[2019-10-14 22:04:27,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:04:27,198 INFO  L462      AbstractCegarLoop]: Abstraction has 7310 states and 8304 transitions.
[2019-10-14 22:04:27,198 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-14 22:04:27,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 7310 states and 8304 transitions.
[2019-10-14 22:04:27,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 532
[2019-10-14 22:04:27,213 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:04:27,213 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 22:04:27,416 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:27,419 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:04:27,419 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:04:27,420 INFO  L82        PathProgramCache]: Analyzing trace with hash 1122615386, now seen corresponding path program 1 times
[2019-10-14 22:04:27,420 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:04:27,420 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097829578]
[2019-10-14 22:04:27,421 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:27,421 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:04:27,421 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:04:27,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:27,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:27,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:27,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:27,871 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:27,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:28,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 811 backedges. 257 proven. 240 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2019-10-14 22:04:28,201 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097829578]
[2019-10-14 22:04:28,201 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486858276]
[2019-10-14 22:04:28,202 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 22:04:28,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:04:28,357 INFO  L256         TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 22:04:28,404 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:04:28,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 811 backedges. 673 proven. 2 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked.
[2019-10-14 22:04:28,657 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:04:28,657 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-10-14 22:04:28,658 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127512884]
[2019-10-14 22:04:28,659 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-14 22:04:28,659 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:04:28,659 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-14 22:04:28,659 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:04:28,660 INFO  L87              Difference]: Start difference. First operand 7310 states and 8304 transitions. Second operand 12 states.