java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 21:58:22,812 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 21:58:22,899 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 21:58:22,934 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 21:58:22,935 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 21:58:22,938 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 21:58:22,939 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 21:58:22,939 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 21:58:22,939 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 21:58:22,939 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 21:58:22,939 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 21:58:22,940 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 21:58:22,940 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 21:58:22,940 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 21:58:22,942 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 21:58:22,942 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 21:58:22,942 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 21:58:22,942 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 21:58:22,942 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 21:58:22,943 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 21:58:22,943 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 21:58:22,943 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 21:58:22,943 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 21:58:22,943 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 21:58:22,944 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:58:22,944 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 21:58:22,945 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 21:58:22,945 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 21:58:22,945 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 21:58:22,945 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 21:58:22,946 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 21:58:22,946 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 21:58:23,244 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 21:58:23,263 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 21:58:23,266 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 21:58:23,268 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 21:58:23,268 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 21:58:23,269 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04.c
[2019-10-14 21:58:23,344 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493be02ab/2b2839f1a6d24febb6a4662667d7c302/FLAG99448f6e0
[2019-10-14 21:58:24,041 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 21:58:24,042 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label04.c
[2019-10-14 21:58:24,060 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493be02ab/2b2839f1a6d24febb6a4662667d7c302/FLAG99448f6e0
[2019-10-14 21:58:24,266 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493be02ab/2b2839f1a6d24febb6a4662667d7c302
[2019-10-14 21:58:24,277 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 21:58:24,279 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 21:58:24,281 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 21:58:24,281 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 21:58:24,287 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 21:58:24,288 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:24" (1/1) ...
[2019-10-14 21:58:24,292 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be7d9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:24, skipping insertion in model container
[2019-10-14 21:58:24,292 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:24" (1/1) ...
[2019-10-14 21:58:24,301 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 21:58:24,361 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 21:58:25,029 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:58:25,039 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 21:58:25,227 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:58:25,244 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 21:58:25,244 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25 WrapperNode
[2019-10-14 21:58:25,244 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 21:58:25,245 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 21:58:25,245 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 21:58:25,246 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 21:58:25,259 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,259 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,281 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,282 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,351 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,370 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,380 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (1/1) ...
[2019-10-14 21:58:25,391 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 21:58:25,392 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 21:58:25,392 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 21:58:25,392 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 21:58:25,393 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (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 21:58:25,467 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 21:58:25,468 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 21:58:25,468 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 21:58:25,469 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 21:58:25,469 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 21:58:25,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 21:58:25,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 21:58:25,470 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 21:58:25,471 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 21:58:25,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 21:58:25,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 21:58:27,397 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 21:58:27,398 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 21:58:27,400 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:27 BoogieIcfgContainer
[2019-10-14 21:58:27,400 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 21:58:27,401 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 21:58:27,401 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 21:58:27,406 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 21:58:27,407 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:58:24" (1/3) ...
[2019-10-14 21:58:27,408 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5286facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:27, skipping insertion in model container
[2019-10-14 21:58:27,408 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:25" (2/3) ...
[2019-10-14 21:58:27,409 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5286facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:27, skipping insertion in model container
[2019-10-14 21:58:27,409 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:27" (3/3) ...
[2019-10-14 21:58:27,419 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label04.c
[2019-10-14 21:58:27,430 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 21:58:27,441 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 21:58:27,453 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 21:58:27,498 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 21:58:27,498 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 21:58:27,500 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 21:58:27,500 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 21:58:27,500 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 21:58:27,500 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 21:58:27,501 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 21:58:27,501 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 21:58:27,540 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-14 21:58:27,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2019-10-14 21:58:27,552 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:27,553 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:58:27,555 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:27,562 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:27,563 INFO  L82        PathProgramCache]: Analyzing trace with hash 1796892554, now seen corresponding path program 1 times
[2019-10-14 21:58:27,573 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:27,573 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551099888]
[2019-10-14 21:58:27,574 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:27,574 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:27,574 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:27,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:28,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:28,130 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 21:58:28,131 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551099888]
[2019-10-14 21:58:28,132 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:58:28,132 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 21:58:28,133 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064873511]
[2019-10-14 21:58:28,138 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:58:28,138 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:28,158 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:58:28,159 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 21:58:28,162 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-14 21:58:31,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:31,833 INFO  L93              Difference]: Finished difference Result 993 states and 1777 transitions.
[2019-10-14 21:58:31,833 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:58:31,835 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 59
[2019-10-14 21:58:31,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:31,856 INFO  L225             Difference]: With dead ends: 993
[2019-10-14 21:58:31,856 INFO  L226             Difference]: Without dead ends: 632
[2019-10-14 21:58:31,867 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:58:31,891 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 632 states.
[2019-10-14 21:58:31,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 628.
[2019-10-14 21:58:31,978 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 628 states.
[2019-10-14 21:58:31,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 886 transitions.
[2019-10-14 21:58:31,985 INFO  L78                 Accepts]: Start accepts. Automaton has 628 states and 886 transitions. Word has length 59
[2019-10-14 21:58:31,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:31,987 INFO  L462      AbstractCegarLoop]: Abstraction has 628 states and 886 transitions.
[2019-10-14 21:58:31,988 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:58:31,988 INFO  L276                IsEmpty]: Start isEmpty. Operand 628 states and 886 transitions.
[2019-10-14 21:58:32,003 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2019-10-14 21:58:32,004 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:32,004 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-14 21:58:32,004 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:32,005 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:32,005 INFO  L82        PathProgramCache]: Analyzing trace with hash -676009126, now seen corresponding path program 1 times
[2019-10-14 21:58:32,005 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:32,005 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037568562]
[2019-10-14 21:58:32,006 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:32,006 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:32,008 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:32,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:32,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:32,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:32,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:58:32,378 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037568562]
[2019-10-14 21:58:32,378 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:58:32,379 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-14 21:58:32,379 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66276280]
[2019-10-14 21:58:32,384 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:58:32,384 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:32,384 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:58:32,385 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:58:32,385 INFO  L87              Difference]: Start difference. First operand 628 states and 886 transitions. Second operand 8 states.
[2019-10-14 21:58:35,241 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:35,242 INFO  L93              Difference]: Finished difference Result 1873 states and 2696 transitions.
[2019-10-14 21:58:35,243 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-14 21:58:35,243 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 139
[2019-10-14 21:58:35,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:35,254 INFO  L225             Difference]: With dead ends: 1873
[2019-10-14 21:58:35,255 INFO  L226             Difference]: Without dead ends: 1251
[2019-10-14 21:58:35,259 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-14 21:58:35,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1251 states.
[2019-10-14 21:58:35,330 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1226.
[2019-10-14 21:58:35,330 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1226 states.
[2019-10-14 21:58:35,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1619 transitions.
[2019-10-14 21:58:35,337 INFO  L78                 Accepts]: Start accepts. Automaton has 1226 states and 1619 transitions. Word has length 139
[2019-10-14 21:58:35,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:35,340 INFO  L462      AbstractCegarLoop]: Abstraction has 1226 states and 1619 transitions.
[2019-10-14 21:58:35,340 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 21:58:35,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 1226 states and 1619 transitions.
[2019-10-14 21:58:35,351 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 191
[2019-10-14 21:58:35,351 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:35,352 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-14 21:58:35,353 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:35,353 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:35,353 INFO  L82        PathProgramCache]: Analyzing trace with hash 828635490, now seen corresponding path program 1 times
[2019-10-14 21:58:35,354 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:35,355 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309934933]
[2019-10-14 21:58:35,356 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:35,356 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:35,356 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:35,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:35,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:35,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:35,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:58:35,734 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309934933]
[2019-10-14 21:58:35,734 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536086286]
[2019-10-14 21:58:35,735 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 21:58:35,838 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:35,841 INFO  L256         TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:58:35,853 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:58:35,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:58:35,959 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:58:35,960 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8
[2019-10-14 21:58:35,960 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082872885]
[2019-10-14 21:58:35,961 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:58:35,961 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:35,961 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:58:35,962 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:58:35,962 INFO  L87              Difference]: Start difference. First operand 1226 states and 1619 transitions. Second operand 3 states.
[2019-10-14 21:58:37,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:37,067 INFO  L93              Difference]: Finished difference Result 3612 states and 4883 transitions.
[2019-10-14 21:58:37,068 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:58:37,069 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 190
[2019-10-14 21:58:37,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:37,083 INFO  L225             Difference]: With dead ends: 3612
[2019-10-14 21:58:37,084 INFO  L226             Difference]: Without dead ends: 2392
[2019-10-14 21:58:37,087 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:58:37,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2392 states.
[2019-10-14 21:58:37,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2189.
[2019-10-14 21:58:37,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2189 states.
[2019-10-14 21:58:37,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2912 transitions.
[2019-10-14 21:58:37,160 INFO  L78                 Accepts]: Start accepts. Automaton has 2189 states and 2912 transitions. Word has length 190
[2019-10-14 21:58:37,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:37,161 INFO  L462      AbstractCegarLoop]: Abstraction has 2189 states and 2912 transitions.
[2019-10-14 21:58:37,161 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:58:37,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 2189 states and 2912 transitions.
[2019-10-14 21:58:37,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2019-10-14 21:58:37,167 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:37,167 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:37,371 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:37,372 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:37,372 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:37,372 INFO  L82        PathProgramCache]: Analyzing trace with hash 1126757590, now seen corresponding path program 1 times
[2019-10-14 21:58:37,373 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:37,373 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550502961]
[2019-10-14 21:58:37,374 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:37,374 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:37,374 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:37,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:37,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:37,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:37,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:37,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 21:58:37,724 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550502961]
[2019-10-14 21:58:37,725 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055531422]
[2019-10-14 21:58:37,725 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 21:58:37,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:37,837 INFO  L256         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 21:58:37,856 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:58:37,986 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2019-10-14 21:58:37,986 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:58:37,987 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-14 21:58:37,988 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883942069]
[2019-10-14 21:58:37,988 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:58:37,989 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:37,989 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:58:37,989 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-14 21:58:37,989 INFO  L87              Difference]: Start difference. First operand 2189 states and 2912 transitions. Second operand 5 states.
[2019-10-14 21:58:39,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:39,515 INFO  L93              Difference]: Finished difference Result 5406 states and 7546 transitions.
[2019-10-14 21:58:39,516 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:58:39,516 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 225
[2019-10-14 21:58:39,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:39,537 INFO  L225             Difference]: With dead ends: 5406
[2019-10-14 21:58:39,537 INFO  L226             Difference]: Without dead ends: 3223
[2019-10-14 21:58:39,544 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-14 21:58:39,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3223 states.
[2019-10-14 21:58:39,672 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3183.
[2019-10-14 21:58:39,672 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3183 states.
[2019-10-14 21:58:39,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4270 transitions.
[2019-10-14 21:58:39,684 INFO  L78                 Accepts]: Start accepts. Automaton has 3183 states and 4270 transitions. Word has length 225
[2019-10-14 21:58:39,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:39,685 INFO  L462      AbstractCegarLoop]: Abstraction has 3183 states and 4270 transitions.
[2019-10-14 21:58:39,685 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:58:39,685 INFO  L276                IsEmpty]: Start isEmpty. Operand 3183 states and 4270 transitions.
[2019-10-14 21:58:39,691 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2019-10-14 21:58:39,691 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:39,691 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 21:58:39,895 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:39,896 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:39,896 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:39,897 INFO  L82        PathProgramCache]: Analyzing trace with hash 654768965, now seen corresponding path program 1 times
[2019-10-14 21:58:39,897 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:39,897 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560233280]
[2019-10-14 21:58:39,898 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:39,898 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:39,899 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:39,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:40,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:40,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:40,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:40,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:58:40,125 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560233280]
[2019-10-14 21:58:40,125 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192979246]
[2019-10-14 21:58:40,126 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 21:58:40,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:40,232 INFO  L256         TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:58:40,236 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:58:40,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:58:40,281 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:58:40,281 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-14 21:58:40,282 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904378914]
[2019-10-14 21:58:40,282 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:58:40,283 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:40,283 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:58:40,283 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:58:40,283 INFO  L87              Difference]: Start difference. First operand 3183 states and 4270 transitions. Second operand 3 states.
[2019-10-14 21:58:41,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:41,495 INFO  L93              Difference]: Finished difference Result 7147 states and 9731 transitions.
[2019-10-14 21:58:41,499 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:58:41,500 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 226
[2019-10-14 21:58:41,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:41,520 INFO  L225             Difference]: With dead ends: 7147
[2019-10-14 21:58:41,521 INFO  L226             Difference]: Without dead ends: 4158
[2019-10-14 21:58:41,529 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:58:41,535 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4158 states.
[2019-10-14 21:58:41,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3953.
[2019-10-14 21:58:41,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3953 states.
[2019-10-14 21:58:41,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5305 transitions.
[2019-10-14 21:58:41,635 INFO  L78                 Accepts]: Start accepts. Automaton has 3953 states and 5305 transitions. Word has length 226
[2019-10-14 21:58:41,636 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:41,636 INFO  L462      AbstractCegarLoop]: Abstraction has 3953 states and 5305 transitions.
[2019-10-14 21:58:41,636 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:58:41,636 INFO  L276                IsEmpty]: Start isEmpty. Operand 3953 states and 5305 transitions.
[2019-10-14 21:58:41,645 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2019-10-14 21:58:41,645 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:41,646 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:41,850 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:41,850 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:41,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:41,851 INFO  L82        PathProgramCache]: Analyzing trace with hash -1068121551, now seen corresponding path program 1 times
[2019-10-14 21:58:41,851 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:41,851 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470674967]
[2019-10-14 21:58:41,851 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:41,851 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:41,852 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:41,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:42,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:42,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:42,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:42,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 185 backedges. 7 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2019-10-14 21:58:42,239 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470674967]
[2019-10-14 21:58:42,239 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545264877]
[2019-10-14 21:58:42,239 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 21:58:42,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:42,383 INFO  L256         TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-14 21:58:42,387 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:58:42,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:58:42,485 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:58:42,486 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14
[2019-10-14 21:58:42,486 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841574669]
[2019-10-14 21:58:42,487 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 14 states
[2019-10-14 21:58:42,487 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:42,487 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2019-10-14 21:58:42,488 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2019-10-14 21:58:42,488 INFO  L87              Difference]: Start difference. First operand 3953 states and 5305 transitions. Second operand 14 states.
[2019-10-14 21:58:55,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:55,635 INFO  L93              Difference]: Finished difference Result 14359 states and 21427 transitions.
[2019-10-14 21:58:55,635 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. 
[2019-10-14 21:58:55,636 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 271
[2019-10-14 21:58:55,636 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:55,686 INFO  L225             Difference]: With dead ends: 14359
[2019-10-14 21:58:55,687 INFO  L226             Difference]: Without dead ends: 10600
[2019-10-14 21:58:55,702 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2613 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1213, Invalid=5927, Unknown=0, NotChecked=0, Total=7140
[2019-10-14 21:58:55,713 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10600 states.
[2019-10-14 21:58:56,002 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 9889.
[2019-10-14 21:58:56,002 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9889 states.
[2019-10-14 21:58:56,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 13534 transitions.
[2019-10-14 21:58:56,028 INFO  L78                 Accepts]: Start accepts. Automaton has 9889 states and 13534 transitions. Word has length 271
[2019-10-14 21:58:56,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:56,029 INFO  L462      AbstractCegarLoop]: Abstraction has 9889 states and 13534 transitions.
[2019-10-14 21:58:56,029 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2019-10-14 21:58:56,029 INFO  L276                IsEmpty]: Start isEmpty. Operand 9889 states and 13534 transitions.
[2019-10-14 21:58:56,046 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 277
[2019-10-14 21:58:56,047 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:56,047 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-14 21:58:56,251 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:56,253 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:56,253 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:56,254 INFO  L82        PathProgramCache]: Analyzing trace with hash -1870221570, now seen corresponding path program 1 times
[2019-10-14 21:58:56,254 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:56,254 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77595996]
[2019-10-14 21:58:56,254 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:56,255 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:56,255 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:56,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:56,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:56,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:56,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:56,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:58:56,545 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77595996]
[2019-10-14 21:58:56,546 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683429862]
[2019-10-14 21:58:56,546 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:56,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:56,658 INFO  L256         TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:58:56,672 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:58:56,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:58:56,751 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:58:56,751 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2019-10-14 21:58:56,752 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254528920]
[2019-10-14 21:58:56,752 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:58:56,752 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:56,753 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:58:56,753 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:58:56,753 INFO  L87              Difference]: Start difference. First operand 9889 states and 13534 transitions. Second operand 3 states.
[2019-10-14 21:58:58,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:58:58,002 INFO  L93              Difference]: Finished difference Result 22828 states and 31926 transitions.
[2019-10-14 21:58:58,003 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:58:58,003 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 276
[2019-10-14 21:58:58,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:58:58,052 INFO  L225             Difference]: With dead ends: 22828
[2019-10-14 21:58:58,053 INFO  L226             Difference]: Without dead ends: 13323
[2019-10-14 21:58:58,079 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:58:58,093 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13323 states.
[2019-10-14 21:58:58,358 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13323 to 11805.
[2019-10-14 21:58:58,358 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11805 states.
[2019-10-14 21:58:58,388 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 15835 transitions.
[2019-10-14 21:58:58,389 INFO  L78                 Accepts]: Start accepts. Automaton has 11805 states and 15835 transitions. Word has length 276
[2019-10-14 21:58:58,389 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:58:58,389 INFO  L462      AbstractCegarLoop]: Abstraction has 11805 states and 15835 transitions.
[2019-10-14 21:58:58,390 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:58:58,390 INFO  L276                IsEmpty]: Start isEmpty. Operand 11805 states and 15835 transitions.
[2019-10-14 21:58:58,414 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2019-10-14 21:58:58,415 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:58:58,415 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:58:58,620 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:58,620 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:58:58,620 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:58:58,620 INFO  L82        PathProgramCache]: Analyzing trace with hash -1456020950, now seen corresponding path program 1 times
[2019-10-14 21:58:58,621 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:58:58,621 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648299990]
[2019-10-14 21:58:58,621 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:58,621 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:58:58,621 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:58:58,660 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:58,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:58,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:58,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:58,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:59,021 INFO  L134       CoverageAnalysis]: Checked inductivity of 382 backedges. 303 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2019-10-14 21:58:59,022 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648299990]
[2019-10-14 21:58:59,022 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938522042]
[2019-10-14 21:58:59,022 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:58:59,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:58:59,180 INFO  L256         TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-14 21:58:59,185 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:58:59,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 382 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-14 21:58:59,370 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:58:59,370 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-10-14 21:58:59,370 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634592017]
[2019-10-14 21:58:59,371 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:58:59,371 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:58:59,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:58:59,372 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:58:59,372 INFO  L87              Difference]: Start difference. First operand 11805 states and 15835 transitions. Second operand 8 states.