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/Problem18_label18.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:05:35,943 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 22:05:36,031 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 22:05:36,059 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:05:36,059 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:05:36,061 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:05:36,061 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:05:36,061 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:05:36,061 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:05:36,062 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:05:36,062 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:05:36,062 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:05:36,062 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:05:36,062 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:05:36,062 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:05:36,063 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:05:36,063 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:05:36,063 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:05:36,063 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:05:36,063 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:05:36,064 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:05:36,064 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:05:36,064 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:05:36,064 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:05:36,064 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:05:36,065 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:05:36,065 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:05:36,065 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:05:36,065 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:05:36,065 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:05:36,066 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:05:36,066 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:05:36,337 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:05:36,360 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:05:36,364 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:05:36,365 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:05:36,366 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:05:36,367 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c
[2019-10-14 22:05:36,446 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2af888d/c8904fce06a54ac08c3def0c8d3dcbbf/FLAGf614a2468
[2019-10-14 22:05:37,173 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:05:37,173 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18.c
[2019-10-14 22:05:37,199 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2af888d/c8904fce06a54ac08c3def0c8d3dcbbf/FLAGf614a2468
[2019-10-14 22:05:37,279 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2af888d/c8904fce06a54ac08c3def0c8d3dcbbf
[2019-10-14 22:05:37,290 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:05:37,291 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:05:37,292 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:05:37,293 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:05:37,296 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:05:37,297 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:37" (1/1) ...
[2019-10-14 22:05:37,300 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef64dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:37, skipping insertion in model container
[2019-10-14 22:05:37,301 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:37" (1/1) ...
[2019-10-14 22:05:37,311 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:05:37,435 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:05:38,806 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:05:38,816 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:05:39,305 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:05:39,335 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:05:39,336 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39 WrapperNode
[2019-10-14 22:05:39,336 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:05:39,338 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:05:39,338 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:05:39,338 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:05:39,353 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,353 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,409 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,411 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,515 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,545 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,565 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ...
[2019-10-14 22:05:39,584 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:05:39,585 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:05:39,585 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:05:39,585 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:05:39,587 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (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 22:05:39,666 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:05:39,666 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:05:39,667 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:05:39,667 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:05:39,667 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 22:05:39,667 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:05:39,668 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:05:39,668 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:05:39,668 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 22:05:39,668 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:05:39,668 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:05:39,669 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:05:39,669 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:05:39,669 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:05:39,669 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:05:43,344 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:05:43,345 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:05:43,349 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:43 BoogieIcfgContainer
[2019-10-14 22:05:43,349 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:05:43,351 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:05:43,351 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:05:43,354 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:05:43,354 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:37" (1/3) ...
[2019-10-14 22:05:43,355 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:43, skipping insertion in model container
[2019-10-14 22:05:43,355 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (2/3) ...
[2019-10-14 22:05:43,356 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:43, skipping insertion in model container
[2019-10-14 22:05:43,356 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:43" (3/3) ...
[2019-10-14 22:05:43,358 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem18_label18.c
[2019-10-14 22:05:43,368 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:05:43,377 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:05:43,388 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:05:43,421 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:05:43,421 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:05:43,421 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:05:43,421 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:05:43,421 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:05:43,421 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:05:43,422 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:05:43,422 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:05:43,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 774 states.
[2019-10-14 22:05:43,465 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2019-10-14 22:05:43,465 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:05:43,466 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]
[2019-10-14 22:05:43,468 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:05:43,474 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:05:43,475 INFO  L82        PathProgramCache]: Analyzing trace with hash 269272858, now seen corresponding path program 1 times
[2019-10-14 22:05:43,484 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:05:43,484 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667396044]
[2019-10-14 22:05:43,484 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:43,485 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:43,485 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:05:43,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:43,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:43,842 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 22:05:43,842 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667396044]
[2019-10-14 22:05:43,843 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:05:43,844 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:05:43,844 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937991390]
[2019-10-14 22:05:43,849 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:05:43,849 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:05:43,864 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:05:43,865 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:05:43,867 INFO  L87              Difference]: Start difference. First operand 774 states. Second operand 5 states.
[2019-10-14 22:05:54,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:05:54,075 INFO  L93              Difference]: Finished difference Result 2984 states and 5770 transitions.
[2019-10-14 22:05:54,076 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 22:05:54,078 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 63
[2019-10-14 22:05:54,079 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:05:54,112 INFO  L225             Difference]: With dead ends: 2984
[2019-10-14 22:05:54,112 INFO  L226             Difference]: Without dead ends: 2142
[2019-10-14 22:05:54,122 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:05:54,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2142 states.
[2019-10-14 22:05:54,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132.
[2019-10-14 22:05:54,299 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2132 states.
[2019-10-14 22:05:54,311 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions.
[2019-10-14 22:05:54,314 INFO  L78                 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 63
[2019-10-14 22:05:54,314 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:05:54,315 INFO  L462      AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions.
[2019-10-14 22:05:54,315 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:05:54,315 INFO  L276                IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions.
[2019-10-14 22:05:54,323 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-10-14 22:05:54,323 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:05:54,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:54,324 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:05:54,324 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:05:54,324 INFO  L82        PathProgramCache]: Analyzing trace with hash 1668142983, now seen corresponding path program 1 times
[2019-10-14 22:05:54,325 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:05:54,325 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134977914]
[2019-10-14 22:05:54,325 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:54,325 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:05:54,325 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:05:54,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:54,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:54,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:05:54,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:05:54,693 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134977914]
[2019-10-14 22:05:54,693 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:05:54,693 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 22:05:54,693 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804686745]
[2019-10-14 22:05:54,696 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 22:05:54,696 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:05:54,697 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 22:05:54,697 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 22:05:54,697 INFO  L87              Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states.
[2019-10-14 22:06:03,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:06:03,346 INFO  L93              Difference]: Finished difference Result 6473 states and 11554 transitions.
[2019-10-14 22:06:03,347 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-14 22:06:03,347 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 152
[2019-10-14 22:06:03,348 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:06:03,374 INFO  L225             Difference]: With dead ends: 6473
[2019-10-14 22:06:03,374 INFO  L226             Difference]: Without dead ends: 4347
[2019-10-14 22:06:03,380 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-14 22:06:03,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4347 states.
[2019-10-14 22:06:03,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4301.
[2019-10-14 22:06:03,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4301 states.
[2019-10-14 22:06:03,547 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 7377 transitions.
[2019-10-14 22:06:03,548 INFO  L78                 Accepts]: Start accepts. Automaton has 4301 states and 7377 transitions. Word has length 152
[2019-10-14 22:06:03,550 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:06:03,551 INFO  L462      AbstractCegarLoop]: Abstraction has 4301 states and 7377 transitions.
[2019-10-14 22:06:03,551 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 22:06:03,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 4301 states and 7377 transitions.
[2019-10-14 22:06:03,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2019-10-14 22:06:03,562 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:06:03,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:03,564 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:06:03,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:06:03,565 INFO  L82        PathProgramCache]: Analyzing trace with hash 1811597990, now seen corresponding path program 1 times
[2019-10-14 22:06:03,565 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:06:03,565 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855491233]
[2019-10-14 22:06:03,566 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:06:03,566 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:06:03,566 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:06:03,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:03,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:03,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:03,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:06:03,835 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855491233]
[2019-10-14 22:06:03,835 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:06:03,835 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-14 22:06:03,835 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834820346]
[2019-10-14 22:06:03,836 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-14 22:06:03,837 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:06:03,837 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-14 22:06:03,837 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:06:03,837 INFO  L87              Difference]: Start difference. First operand 4301 states and 7377 transitions. Second operand 7 states.
[2019-10-14 22:06:12,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:06:12,662 INFO  L93              Difference]: Finished difference Result 13120 states and 22980 transitions.
[2019-10-14 22:06:12,663 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-14 22:06:12,663 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 153
[2019-10-14 22:06:12,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:06:12,712 INFO  L225             Difference]: With dead ends: 13120
[2019-10-14 22:06:12,712 INFO  L226             Difference]: Without dead ends: 8825
[2019-10-14 22:06:12,729 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2019-10-14 22:06:12,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8825 states.
[2019-10-14 22:06:12,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8723.
[2019-10-14 22:06:12,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8723 states.
[2019-10-14 22:06:12,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 13156 transitions.
[2019-10-14 22:06:12,995 INFO  L78                 Accepts]: Start accepts. Automaton has 8723 states and 13156 transitions. Word has length 153
[2019-10-14 22:06:12,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:06:12,995 INFO  L462      AbstractCegarLoop]: Abstraction has 8723 states and 13156 transitions.
[2019-10-14 22:06:12,995 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-14 22:06:12,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 8723 states and 13156 transitions.
[2019-10-14 22:06:13,000 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2019-10-14 22:06:13,000 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:06:13,001 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:06:13,001 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:06:13,001 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:06:13,002 INFO  L82        PathProgramCache]: Analyzing trace with hash -1951116309, now seen corresponding path program 1 times
[2019-10-14 22:06:13,002 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:06:13,002 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056356060]
[2019-10-14 22:06:13,002 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:06:13,002 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:06:13,003 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:06:13,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:13,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:13,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:13,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:13,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 181 backedges. 112 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 22:06:13,305 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056356060]
[2019-10-14 22:06:13,306 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273935777]
[2019-10-14 22:06:13,306 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 22:06:13,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:06:13,422 INFO  L256         TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-14 22:06:13,434 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:06:13,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 181 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2019-10-14 22:06:13,542 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 22:06:13,543 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10
[2019-10-14 22:06:13,543 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255917822]
[2019-10-14 22:06:13,544 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:06:13,544 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:06:13,545 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:06:13,546 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2019-10-14 22:06:13,546 INFO  L87              Difference]: Start difference. First operand 8723 states and 13156 transitions. Second operand 5 states.