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/Problem12_label16.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:00:13,103 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 22:00:13,106 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-14 22:00:13,179 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 22:00:13,196 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:00:13,196 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:00:13,197 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:00:13,197 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:00:13,198 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:00:13,198 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:00:13,198 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:00:13,198 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:00:13,198 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:00:13,199 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:00:13,199 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:00:13,199 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:00:13,199 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:00:13,199 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:00:13,200 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:00:13,200 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:00:13,200 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:00:13,200 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:00:13,200 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:00:13,201 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:00:13,201 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:00:13,201 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:00:13,201 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:00:13,201 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:00:13,202 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:00:13,202 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:00:13,202 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:00:13,202 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:00:13,202 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:00:13,512 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:00:13,533 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:00:13,537 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:00:13,539 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:00:13,540 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:00:13,541 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c
[2019-10-14 22:00:13,621 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7c272a5/34262b8335644def99315007e6f687d6/FLAGa2fef69d9
[2019-10-14 22:00:14,421 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:00:14,422 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c
[2019-10-14 22:00:14,449 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7c272a5/34262b8335644def99315007e6f687d6/FLAGa2fef69d9
[2019-10-14 22:00:14,468 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7c272a5/34262b8335644def99315007e6f687d6
[2019-10-14 22:00:14,480 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:00:14,482 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:00:14,483 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:00:14,483 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:00:14,487 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:00:14,488 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:14" (1/1) ...
[2019-10-14 22:00:14,491 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ed2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:14, skipping insertion in model container
[2019-10-14 22:00:14,492 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:14" (1/1) ...
[2019-10-14 22:00:14,500 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:00:14,638 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:00:16,371 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:00:16,382 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:00:17,001 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:00:17,031 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:00:17,032 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17 WrapperNode
[2019-10-14 22:00:17,033 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:00:17,034 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:00:17,034 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:00:17,034 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:00:17,049 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,049 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,098 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,099 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,193 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,229 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,247 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ...
[2019-10-14 22:00:17,274 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:00:17,275 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:00:17,275 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:00:17,275 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:00:17,276 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (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 22:00:17,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:00:17,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:00:17,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:00:17,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:00:17,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 22:00:17,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-14 22:00:17,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:00:17,346 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:00:17,347 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:00:17,347 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 22:00:17,347 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-14 22:00:17,347 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:00:17,347 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:00:17,347 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:00:17,348 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:00:17,348 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:00:17,348 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:00:22,630 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:00:22,631 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:00:22,634 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:22 BoogieIcfgContainer
[2019-10-14 22:00:22,634 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:00:22,636 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:00:22,636 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:00:22,639 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:00:22,639 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:14" (1/3) ...
[2019-10-14 22:00:22,640 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35511577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:22, skipping insertion in model container
[2019-10-14 22:00:22,640 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (2/3) ...
[2019-10-14 22:00:22,640 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35511577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:22, skipping insertion in model container
[2019-10-14 22:00:22,641 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:22" (3/3) ...
[2019-10-14 22:00:22,642 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label16.c
[2019-10-14 22:00:22,652 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:00:22,662 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:00:22,673 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:00:22,707 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:00:22,707 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:00:22,707 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:00:22,708 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:00:22,708 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:00:22,708 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:00:22,708 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:00:22,708 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:00:22,742 INFO  L276                IsEmpty]: Start isEmpty. Operand 839 states.
[2019-10-14 22:00:22,751 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2019-10-14 22:00:22,751 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:22,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:00:22,754 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:22,759 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:22,760 INFO  L82        PathProgramCache]: Analyzing trace with hash 1315979506, now seen corresponding path program 1 times
[2019-10-14 22:00:22,768 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:22,768 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168675593]
[2019-10-14 22:00:22,769 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:22,769 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:22,769 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:22,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:23,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:23,278 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 22:00:23,278 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168675593]
[2019-10-14 22:00:23,279 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:00:23,279 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:00:23,280 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078521828]
[2019-10-14 22:00:23,285 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:00:23,285 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:23,299 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:00:23,300 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:00:23,302 INFO  L87              Difference]: Start difference. First operand 839 states. Second operand 5 states.
[2019-10-14 22:00:32,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:00:32,006 INFO  L93              Difference]: Finished difference Result 2471 states and 4736 transitions.
[2019-10-14 22:00:32,006 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 22:00:32,008 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 71
[2019-10-14 22:00:32,010 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:00:32,055 INFO  L225             Difference]: With dead ends: 2471
[2019-10-14 22:00:32,055 INFO  L226             Difference]: Without dead ends: 1568
[2019-10-14 22:00:32,071 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-10-14 22:00:32,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1568 states.
[2019-10-14 22:00:32,267 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553.
[2019-10-14 22:00:32,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1553 states.
[2019-10-14 22:00:32,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions.
[2019-10-14 22:00:32,282 INFO  L78                 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 71
[2019-10-14 22:00:32,284 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:00:32,284 INFO  L462      AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions.
[2019-10-14 22:00:32,285 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:00:32,285 INFO  L276                IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions.
[2019-10-14 22:00:32,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-10-14 22:00:32,301 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:32,302 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, 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]
[2019-10-14 22:00:32,302 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:32,303 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:32,303 INFO  L82        PathProgramCache]: Analyzing trace with hash 1550888775, now seen corresponding path program 1 times
[2019-10-14 22:00:32,303 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:32,304 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078824938]
[2019-10-14 22:00:32,304 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:32,304 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:32,304 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:32,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:32,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:32,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:32,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:00:32,670 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078824938]
[2019-10-14 22:00:32,671 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:00:32,671 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-14 22:00:32,671 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348496100]
[2019-10-14 22:00:32,676 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 22:00:32,676 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:32,677 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 22:00:32,677 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-10-14 22:00:32,677 INFO  L87              Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 8 states.
[2019-10-14 22:00:44,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:00:44,882 INFO  L93              Difference]: Finished difference Result 4751 states and 8585 transitions.
[2019-10-14 22:00:44,883 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-14 22:00:44,883 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 144
[2019-10-14 22:00:44,883 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:00:44,906 INFO  L225             Difference]: With dead ends: 4751
[2019-10-14 22:00:44,906 INFO  L226             Difference]: Without dead ends: 3204
[2019-10-14 22:00:44,913 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2019-10-14 22:00:44,918 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3204 states.
[2019-10-14 22:00:45,015 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3149.
[2019-10-14 22:00:45,015 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3149 states.
[2019-10-14 22:00:45,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4657 transitions.
[2019-10-14 22:00:45,031 INFO  L78                 Accepts]: Start accepts. Automaton has 3149 states and 4657 transitions. Word has length 144
[2019-10-14 22:00:45,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:00:45,035 INFO  L462      AbstractCegarLoop]: Abstraction has 3149 states and 4657 transitions.
[2019-10-14 22:00:45,035 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 22:00:45,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 3149 states and 4657 transitions.
[2019-10-14 22:00:45,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-10-14 22:00:45,046 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:45,046 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, 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]
[2019-10-14 22:00:45,046 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:45,047 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:45,047 INFO  L82        PathProgramCache]: Analyzing trace with hash 318484651, now seen corresponding path program 1 times
[2019-10-14 22:00:45,048 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:45,048 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812030008]
[2019-10-14 22:00:45,048 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:45,048 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:45,049 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:45,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:45,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:45,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:45,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:00:45,291 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812030008]
[2019-10-14 22:00:45,292 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493974263]
[2019-10-14 22:00:45,292 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 22:00:45,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:45,398 INFO  L256         TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core
[2019-10-14 22:00:45,408 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:00:45,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2019-10-14 22:00:45,538 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:00:45,539 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8
[2019-10-14 22:00:45,539 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572253402]
[2019-10-14 22:00:45,541 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 22:00:45,542 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:45,542 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 22:00:45,543 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-10-14 22:00:45,543 INFO  L87              Difference]: Start difference. First operand 3149 states and 4657 transitions. Second operand 8 states.